Slashdot Mirror


Nuclear Decay May Vary With Earth-Sun Distance

KentuckyFC writes "We've long thought that nuclear decay rates are constant regardless of ambient conditions (except in a few special cases where beta decay can be influenced by powerful electric fields). So that makes it hard to explain two puzzling experiments from the 1980s that found periodic variations over many years in the decay rates of silicon-32 and radium-226. Now a new analysis of the raw data says that changes in the decay rate are synchronized with each other and with Earth's distance from the sun. The physicists behind this work offer two theories to explain why this might be happening (abstract). First, some theorists think the sun produces a field that changes the value of the fine structure constant on Earth as its distance from the sun varies. That would certainly affect the rate of nuclear decay. Another idea is that the effect is caused by some kind of interaction with the neutrino flux from the sun's interior which also varies with distance. Take your pick. What makes the whole story even more intriguing is that for years physicists have disagreed over the decay rates of several isotopes such as titanium-44, silicon-32, and cesium-137. Perhaps they took their data at different times of the year?"

418 comments

  1. Carbon Dating by Jaysyn · · Score: 5, Interesting

    Does this have any ramifications for carbon dating?

    --
    There is a war going on for your mind.
    1. Re:Carbon Dating by Anonymous Coward · · Score: 5, Funny

      Yes, you can now only date graphite. Diamonds are no longer acceptable dating material.

    2. Re:Carbon Dating by meringuoid · · Score: 5, Informative
      I'd expect not. The variation would be over the course of a year, and carbon dating works on a timescale of centuries to millennia; it would even out. Besides that, we have other clocks to calibrate carbon dating against; you can carbon-date a historic artefact of known age, you can count tree rings or ice layers, stuff like that.

      On a timescale of billions of years, however, the luminosity of the Sun has increased substantially, and if that accelerates radioactive decays by some neutrino interaction then the uranium-lead clock would be off and the Earth might be considerably older than we thought.

      --
      Real Daleks don't climb stairs - they level the building.
    3. Re:Carbon Dating by kmac06 · · Score: 4, Informative

      Probably not. The change in decay rate was on the order of .1% (see Fig. 1 of the paper), which is I believe smaller than the error in carbon (or other radioactive) dating. Also, it is only these two isotopes that are mentioned, presumably because most other isotopes tested do not have this sort of periodic effect.

    4. Re:Carbon Dating by Smidge204 · · Score: 1

      Probably not that much, really. The earth is only 6,000 years old, right? :)

      Joking aside:

      The cycle is relatively fast according to the graph in TFA - roughly annual. For things measured on a geological timescale this will average out pretty quickly. The important thing is to calibrate the reference accordingly.

      Of course, one the cause of the variation is pinned down we'll need to find out if there were any events in the past that might have caused substantial variances - that just might effect things.
      =Smidge=

    5. Re:Carbon Dating by I+cant+believe+its+n · · Score: 2, Funny

      Does this have any ramifications for carbon dating?

      No, I'd say just go with the original plan of a nice dinner and a walk by the ocean and you will do just fine.

      --
      She made the willows dance
    6. Re:Carbon Dating by clickety6 · · Score: 5, Funny

      Yes - but not enough to account for the difference between Joan Rivers' apparent and actual age.

      --
      ----------------------------------- My Other Sig Is Hilarious -----------------------------------
    7. Re:Carbon Dating by Vectronic · · Score: 5, Funny

      I dated graphite once, she wasnt very original, kinda flaky, and left dark marks on me... Diamonds, is still playing hard to get though...

    8. Re:Carbon Dating by kmac06 · · Score: 4, Interesting

      Also, it is only these two isotopes that are mentioned, presumably because most other isotopes tested do not have this sort of periodic effect.

      I stand corrected! From the paper:

      Although there are hundreds of potentially useful nuclides whose half-lives have been measured, the data from many of the experiments we examined were generally not useful, most often because data were not acquired continuously over sufficiently long time periods.

      So the possible ramifications of this increase!

    9. Re:Carbon Dating by longacre · · Score: 3, Funny

      ...and a walk by the ocean and you will do just fine.

      But I live in Nebraska, you insensitive clod!

    10. Re:Carbon Dating by Lodragandraoidh · · Score: 2, Insightful

      I am more concerned about the other end of that - time-keeping --- the communications networks get their time hacks from clocks based upon the decay rate of isotopes (e.g. a cesium clock).

      The cool thing is, if this periodical effect is a constant function, then we can adjust our clocks based upon this new knowledge -- making them more accurate over the long haul.

      As for carbon dating, assuming what I said was true, I don't see why you could not apply the function to get a more accurate reading - not that carbon dating is that accurate to begin with (from a human standpoint - if you are talking about increasing your accuracy by hours or even days -- that still lays well within the realm of statistical noise when you are talking about millions of years).

      --

      Lodragan Draoidh
      The more you explain it, the more I don't understand it. - Mark Twain
    11. Re:Carbon Dating by The+Standard+Deviant · · Score: 5, Funny

      I take it you don't play with bucky balls then!

    12. Re:Carbon Dating by Watson+Ladd · · Score: 4, Informative

      Actually a cesium clock uses the hyperfine structure which is not known to be affected these effects.

      --
      Inventions have long since reached their limit, and I see no hope for further development.-- Frontinus, 1st cent. AD
    13. Re:Carbon Dating by mcvos · · Score: 4, Funny

      Diamonds are generally best friends, not dating material.

    14. Re:Carbon Dating by paeanblack · · Score: 4, Informative

      I am more concerned about the other end of that - time-keeping --- the communications networks get their time hacks from clocks based upon the decay rate of isotopes (e.g. a cesium clock).

      Caesium clocks have nothing to do with nuclear decay rates. They measure electron state transition times. You can relax now.

    15. Re:Carbon Dating by Bob-taro · · Score: 5, Interesting

      Also, it is only these two isotopes that are mentioned, presumably because most other isotopes tested do not have this sort of periodic effect.

      I wouldn't presume that. The very thing that makes this so interesting is that "the modulations are synchronised with each other and with Earth's distance from the sun." To me, that makes it likely to be a general effect on all radioactive materials. I don't know if this will lead to anything that supports a young earth theory, but it'll be interesting to see what comes from it. The article also mentions:

      It turns out, that the notion of that nuclear decay rates are constant has been under attack for some time. In 2006, Jenkins says the decay rate of manganese-54 in their lab decreased dramtically during a solar flare on 13 December.

      This is a good example of how many holes there might be in our theories about the universe. We have been making measurements for a few 1000 years in one solar system (mostly just on one planet) and things that we don't see changing, like radioactive decay rates, we consider constant. It's exciting to think how much more there may still be to discover.

      --
      Prov 9:8 Do not rebuke mockers or they will hate you; rebuke the wise and they will love you.
    16. Re:Carbon Dating by Nimey · · Score: 1, Troll

      Oh, lordy. Another misunderstood bit of science for creationists to throw up as "evidence" for an online argument.

      goddidit

      --
      Hail Eris, full of mischief...

      E pluribus sanguinem
    17. Re:Carbon Dating by necro81 · · Score: 5, Informative

      I get your joke, but it presents an opening to state the following little known fact:

      Diamonds are not, in fact, forever

      Under normal temperature and pressure conditions, diamond is not the most stable form of carbon - graphite is. Using thermodynamic arguments and building a free energy curve, one can show that some fraction of a diamond must decay to graphite in order to achieve a minimum energy state. It does take a very long time for this to happen - geologic time - but even a "long time" is not forever. If you aren't that patient, heat the diamond up to, say, 1500 C to speed things up. Oh, but be sure to do that in the absence of oxygen, because diamond burns just like other forms of carbon.

      Some references: [1], [2], [3]

    18. Re:Carbon Dating by Anonymous Coward · · Score: 0, Troll

      Regardless of whether or not this actually impacts on carbon dating, some of our ID friends are going to jump all over this. I remember some guy trying to give a faux-scientific explination of why carbon dating doesn't work. Of course, I was at the bar, drunk, and when I realized he was full of shit my internal translator switched on. His words turned into "blah blah blah blah blah blah".

    19. Re:Carbon Dating by kmac06 · · Score: 4, Informative
      You bring up a good point.

      The communications networks get their time hacks from clocks based upon the decay rate of isotopes (e.g. a cesium clock).

      It's actually based on the frequency of a transition in cesium, but the point is that these transitions are sensitive to the fine structure constant. If some field from the sun is changing that, it should be detectable in atomic clocks.

    20. Re:Carbon Dating by Anonymous Coward · · Score: 0

      Atomic clocks are not based on nuclear decay rates. They are based on transitions involving the atomic electrons. These transitions define a frequency of radiation which is then used to produce the clock.

    21. Re:Carbon Dating by es330td · · Score: 5, Interesting

      I'm more interested to know if this has any impact on nuclear waste. If decay can be sped up artificially one of the biggest objection points against widescale adoption of nuclear power in the US goes away.

    22. Re:Carbon Dating by Anonymous Coward · · Score: 0

      Technically the electron hyperfine transitions aren't used to count time, a quartz crystal is.

    23. Re:Carbon Dating by eldavojohn · · Score: 4, Funny

      Yes - but not enough to account for the difference between Joan Rivers' apparent and actual age.

      When nine-hundred years old you reach, look as good, you will not.

      --
      My work here is dung.
    24. Re:Carbon Dating by mikael · · Score: 2, Insightful

      It's actually based on the frequency of a transition in cesium, but the point is that these transitions are sensitive to the fine structure constant. If some field from the sun is changing that, it should be detectable in atomic clocks.

      Then an atomic clock in orbit around the Earth should speed up when it is nearest the Sun, and slow down when it is behind the Earth?

      Would Radioisotope thermoelectric generators generate more energy when closer to the Sun, than away from the Sun, or simply shielded from it?

      --
      Vintage computer adverts: http://www.vintageadbrowser.com/computers-and-software-ads
    25. Re:Carbon Dating by Anonymous Coward · · Score: 0

      it would take powerful electrical fields to disrupt carbon dating, something the magical mainstream has no need for, what with its 'black holes' and 'dark energy'... you don't need proof if Steven Hawking invents some abstract maths.

    26. Re:Carbon Dating by Anonymous Coward · · Score: 0

      but you need some other form of ultra high precise clock.

    27. Re:Carbon Dating by sdpuppy · · Score: 4, Funny

      They measure electron state transition times. You can relax now.

      Why'd you tell him to relax?

      Look, he just threw off a bunch of photons all over the place - and it was a forbidden transition!

      Ok, so you clean up the mess now! :-)

    28. Re:Carbon Dating by Nymz · · Score: 4, Informative

      The variation would be over the course of a year, and carbon dating works on a timescale of centuries to millennia; it would even out.

      Is that assuming the only measurable factor is based upon the distance from the sun? Because that would seem to be an incomplete description of radiation, especially since the article mentioned the possibility of solar flare activity causing the decay rate to change.

      The old axiom of "The more I learn, the less I know" could very well hold true for this subject matter.

    29. Re:Carbon Dating by MrNaz · · Score: 1

      More to the point, does this have ramifications for non-optical atomic clocks?

      --
      I hate printers.
    30. Re:Carbon Dating by MrNaz · · Score: 3, Funny

      There's a joke in here somewhere about nanowires being phallic and nanotubes, but I'm far to mature to make it.

      --
      I hate printers.
    31. Re:Carbon Dating by MickLinux · · Score: 1

      It seems to me that carbon dating needs to be updated by dating tree rings, to test the level "n" years back. But it is entirely within possibility to do that, and we may well have the data to do it already. Of course, that'll only handle us doing things as far back as we can find carbon dating. And it probably won't take into account variations in C-14 due to things like nearby volcanic explosions (if that affects it at all). Older stuff will still be quite approximate. But only within variation limits that correspond to variations in the Earth's orbit. Minimal, at best, I think.

      --
      Correct Horse Battery Staple: 72 bits of entropy. Enter "Correct H" into google. When it generates the phrase, that's
    32. Re:Carbon Dating by fatphil · · Score: 5, Interesting

      Take an old vinyl record. Punch a new hole just off-centre. Play the record. Sometimes it's too high pitched (fast) and sometimes it's too low pitched (slow). Yet the song still takes the same length of time to play.

      I.e. no.

      --
      Also FatPhil on SoylentNews, id 863
    33. Re:Carbon Dating by superdan2k · · Score: 1

      Sweet! That'll make getting engaged this coming spring a much cheaper prospect!

      Or did you mean calendar dating?

      --
      blog |
    34. Re:Carbon Dating by Anonymous Coward · · Score: 0

      "You can relax now."

      are you talking the excited electron state?

    35. Re:Carbon Dating by Anonymous Coward · · Score: 1, Informative

      No. If there are any they'll probably be less than 1%.

      I didn't read the article yet, but here's why I'm bold enough to say that anyway: anything less than, say, 10%, and any variation is going to be irrelevant to the broad conclusions from radiometric dating, and that would have been noticed already.

      Perhaps surprisingly, some variation in radiometric decay constants isn't news. It is already known for the electron capture mode of decay, due to extreme pressure or complete ionization of the relevant atoms. It works because you need electrons in the vicinity of the nucleus in order for this decay process to work, and if you strip those electrons off (ionization) or crush them closer to the nucleus (extreme pressure), there will be an effect.

      I emphasize "extreme" because I mean "core of the Earth" kind of pressures before you get even a measly percent or two of effect from the process. That makes it irrelevant to the types of radiometric dating that are ordinarily performed on samples from the Earth (crustal depths aren't enough pressure to have a significant effect), and, of course, the mechanism is completely irrelevant for isotopic systems that don't involve electron capture in the first place, and plenty of those are also used for radiometric dating. It's one of those "varies in theory, but in practice it's irrelevant" situations.

      What this article describes is a different process, but I expect that it will be the same story, assuming it is real and not attributed to some other subtle experimental artifact (e.g., seasonal biases on the instrumentation). People will probably be checking into that promptly. It has to be a tiny effect, otherwise it would have been noticed a long time ago because many independent experiments on decay have been done for many decades. I therefore expect any ramifications for C-14 or other radiometric dating techniques are going to be similarly minuscule.

      Of course, that won't stop some people who wish radiometric dating techniques were flawed from making a big deal about it.

    36. Re:Carbon Dating by Gilmoure · · Score: 4, Funny

      Diamond: When you only want the best for your grill.

      --
      I drank what? -- Socrates
    37. Re:Carbon Dating by Sobrique · · Score: 1
      Possibly not so much. I mean if it's related to distance from earth to sun, then given that's pretty consistant over a timeframe measured in years, it's probably ok.

      Now, atomic clocks on the other hand, might have a problem.

    38. Re:Carbon Dating by silentben · · Score: 3, Funny

      So what you are saying is that even though we may all aspire to have a diamond, it is something you can't really hold onto because it will either overreact to something, burn out, or eventually become a stable graphite anyway (which is what we should have been looking for to begin with).

      Man, how far can we drag out these relationship analogies?

    39. Re:Carbon Dating by Scott+Carnahan · · Score: 5, Interesting

      It does take a very long time for this to happen - geologic time - but even a "long time" is not forever.

      The idea that a diamond will decay into graphite in geologic time is a popular fiction. The activation energy barrier for the diamond-graphite transition is high enough that substantial decay at STP will take far longer than the Earth will last, and the time scale is therefore not geologic. Several samples of diamond have been found that crystallized before the formation of the solar system, and some carbonados exhibit Xenon isotope concentrations in inclusions that suggest that they formed in distant supernovas and fell to earth.

      --
      "Your notation sucks!" -- Serge Lang (1927-2005)
    40. Re:Carbon Dating by Gavagai80 · · Score: 1

      Right... all you need is a huge, sun-sized source of radiation to make radioactive decay go faster. The waste can be destroyed in a day if you don't mind killing everyone on the planet.

      --
      This space intentionally left blank
    41. Re:Carbon Dating by CaptDeuce · · Score: 2, Funny

      Yes, you can now only date graphite. Diamonds are no longer acceptable dating material.

      Obviously. Once the guy gives the girl a diamond they are past dating.

      --
      "Where's my other sock?" - A. Einstein
    42. Re:Carbon Dating by davolfman · · Score: 1

      The creationsists are going to MILK this.

    43. Re:Carbon Dating by Anonymous Coward · · Score: 0

      Sure diamonds are forever, you just need to store them at very high temperature and pressure.

    44. Re:Carbon Dating by dotancohen · · Score: 4, Informative

      Diamonds are generally best friends, not dating material.

      No, dogs are best friends around here. What women read /.?

      --
      It is dangerous to be right when the government is wrong.
    45. Re:Carbon Dating by kestasjk · · Score: 4, Insightful

      It's still a depressing thought though. You can just imagine the Bible literalists latching onto this as a way to dismiss evidence based on radioactive decay.

      --
      // MD_Update(&m,buf,j);
    46. Re:Carbon Dating by yukk · · Score: 2, Funny

      ...

      On a timescale of billions of years, however, the luminosity of the Sun has increased substantially, and if that accelerates radioactive decays by some neutrino interaction then the uranium-lead clock would be off and the Earth might be considerably older than we thought.

      So, like 7000 years then ?

      --
      The trouble with the rat race is that even if you win, you're still a rat." Lily Tomlin
    47. Re:Carbon Dating by Ex-Linux-Fanboy · · Score: 1
    48. Re:Carbon Dating by tonyreadsnews · · Score: 1
      Right... Cause there's definitely no way to contain or focus radiation for a finite time.

      Also in TFS says the 2 theories are:

      sun produces a field that changes the value of the fine structure constant on Earth

      and

      interaction with the neutrino flux

      so I don't think you'd need a sun sized radiation source, but a way to create these affects in a contained manner, Mr. Snarky.

      In fact if it is the neutrino flux is what speeds it up, that makes fusion reactors have a secondary purpose... They might be able to reduce radioactive material from fission reactors...

    49. Re:Carbon Dating by gEvil+(beta) · · Score: 3, Funny

      ...and the time scale is therefore not geologic.

      Would the time scale be universal instead? : p

      --
      This guy's the limit!
    50. Re:Carbon Dating by bigbigbison · · Score: 1, Insightful

      Exactly. That was my first thought too. Now the creationist design people will use this as more "proof" that science is wrong without really understanding what it means.

      --
      http://www.popularculturegaming.com -- my blog about the culture of videogame players
    51. Re:Carbon Dating by grub · · Score: 0, Troll


      Is that you, Jesus?

      --
      Trolling is a art,
    52. Re:Carbon Dating by geobeck · · Score: 1

      But I live in Nebraska, you insensitive clod!

      Then make it a long walk!

      --
      Find environmentally and socially responsible products on http://buy-right.net
    53. Re:Carbon Dating by torkus · · Score: 1

      Except the clocks would all speed up and slow down :)

      It's kind of a catch-22 - how do you measure the accuracy of the most accurate clock? Granted the decay rate doesn't appear to be changing the same amount as the transition state may or may not be.

      --
      You can get rich if you own a politician, but you have to be rich to buy one in the first place.
    54. Re:Carbon Dating by Anonymous Coward · · Score: 1, Interesting

      It may be more complicated then that.
      If something like the nutrino field of the sun affects atomic decay. Then you have to know that the natrino field is relatively constant througout the time you are examining and averaging against.

      Not to say the effect is caused by the nutino field it could be caused by anything or even some force yet unkown to physics.

      The point is unless you know that force was also on average stable over the period of time under discussion aks millions of years. You can't trust radio carbon dating.

      Which means you first have to identify the cause.
      Or prove the carbon isotope is does not suffer from the effect.

      Proving if it does or doesn't seems like an experiment that can be done in about a year.

      Knowing the cause of the effect may take some time.

    55. Re:Carbon Dating by Anonymous Coward · · Score: 0

      Oh, but be sure to do that in the absence of oxygen, because diamond burns just like other forms of carbon.

      Which is to say, not at all violently and not at an especially high temperature. Seriously, what's the problem with burning diamonds in oxygen?

    56. Re:Carbon Dating by phoenixwade · · Score: 0

      ...and the time scale is therefore not geologic.
      Would the time scale be universal instead? : p

      No, it'd be Zulu or Greenwich.

      --
      A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort.
    57. Re:Carbon Dating by stjobe · · Score: 2, Funny

      [...] nutrino [...] natrino [...] nutino

      Geez, man! Snap out of it!

      --
      "Total destruction the only solution" - Bob Marley
    58. Re:Carbon Dating by torkus · · Score: 3, Interesting

      For what it's worth, my stepdaughter has a keychain toy with more memory and processing power than we went to the moon with. I have a PDA that processes and stores what would have taken...a skyscraper full of discrete transistors and core memory. Give or take, but the point of scaling down by multiple orders of magnitude is obvious.

      Will we be evaporating nuclear waste next year? Nah. Do we have the possibility to develop the precursor technology in the next 10-20 years for properly disposing of stored long half-life waste 50 years down the road? Quite possibly. That makes nuclear waste storage much, much more practical.

      After all, we don't necessarialy need MORE of the secret sauce. We may just need to concentrate it, tune it, shape it...or what have you to make it many times more effective. First we need to understand it thought :)

      Does this remind anyone else of the 'rules' behind FTL drive in most sci-fi books? Ya-da ya-da gravity well means no FTL but once you move away from the singularity ... zooooooooom. Granted I'm now comparing sci-fi "physics" with a minor observed variation in real life....but shhhh!

      --
      You can get rich if you own a politician, but you have to be rich to buy one in the first place.
    59. Re:Carbon Dating by Anonymous Coward · · Score: 0

      They measure electron state transition times. You can relax now.

      I for one am not an electron, good day.

    60. Re:Carbon Dating by pudro · · Score: 1

      I'd expect the impact to be heavily reliant on what the actual cause is. I find it hard to believe that the cause isn't a direct electromagnetic connection. Despite the dancing many do around the subject, there most definitely is a direct electromagnetic link between the Earth and Sun. And despite what scientists claim, they have no idea how it works. I have never heard a decent explanation for a cause of the solar wind that allows for the sudden complete stoppage and subsequent restart of the solar wind as we have witnessed in the past. Stars being electrically powered may be a start towards explaining that, but it just pushes the causes one step backwards in our understanding of what is going on here.

      --
      Freedom is assumed. Then they try to take it away. The degree to which you resist is the degree to which you are free.
    61. Re:Carbon Dating by geekboy642 · · Score: 1, Flamebait

      You misspelled neutrino not one, but three distinct ways.

      N e u t r i n o

      You also misspelled quite a few other words, but those aren't nearly as aggravating. If you're trying to be pseudo-scientific and sound like a certifiable genius, at least spell correctly the concepts you're misunderstanding.

      --
      Just another "DOJ fascist authoritarian totalitarian bootlicker" -- Zeio
    62. Re:Carbon Dating by drew · · Score: 4, Informative

      At least with regards to carbon dating, it has been known for some time that strict carbon dates are not accurate. These are referred to as "uncalibrated" dates. The explanation that I remember seeing is that the atmospheric ratio of C14/C12 has not been constant over the earth's history, but this may be a factor as well. At any rate, carbon dates for at least the last 15,000 years can be calibrated - that is, the concentration of C14 in the object being tested can be compared to the concentration of C14 in an object of a known age (e.g. from tree rings, ice cores, documented historical sites) to get a more accurate assessment of an objects age. In some cases this can lead to objects being considerably older than originally thought. For example, an uncalibrated carbon date of 9,000BC corresponds to a calibrated carbon date of nearly 11,000BC.

      --
      If I don't put anything here, will anyone recognize me anymore?
    63. Re:Carbon Dating by meringuoid · · Score: 2, Informative
      I'd expect the impact to be heavily reliant on what the actual cause is. I find it hard to believe that the cause isn't a direct electromagnetic connection.

      If this were an electromagnetic effect, we should be able to duplicate it in the lab. It's not hard to produce immense electromagnetic fields in the laboratory, and to subject radioactive samples to the most extreme of conditions. Yet as far as laboratory experiment has been able to determine, electric and magnetic fields, however strong they may be, do not affect radioactive decay rates at all.

      Hence the suggestion that neutrino interactions may be responsible. Neutrinos interact through nuclear forces and therefore it is at least conceivable that they might affect radioactive decay.

      --
      Real Daleks don't climb stairs - they level the building.
    64. Re:Carbon Dating by I+cant+believe+its+n · · Score: 1

      But I live in Nebraska, you insensitive clod!

      In that case, why not take a stroll down I-129. I hear it is lovely this time of year.

      --
      She made the willows dance
    65. Re:Carbon Dating by Beyond_GoodandEvil · · Score: 1

      Which is to say, not at all violently and not at an especially high temperature. Seriously, what's the problem with burning diamonds in oxygen?
      Nothing except the parent poster was saying diamonds + heat = graphite unless there is O2 then diamonds + heat = CO2.

      --
      I laughed at the weak who considered themselves good because they lacked claws.
    66. Re:Carbon Dating by MillionthMonkey · · Score: 3, Funny

      Seriously, what's the problem with burning diamonds in oxygen?

      Spoken like someone who has never experienced a diamond mine fire firsthand.

    67. Re:Carbon Dating by ceoyoyo · · Score: 1

      Which suggests that any variations in nuclear decay rates are NOT caused by changes in the fine structure constant. I suspect we'd notice a .1% annual variation in the speed of our cesium clocks. You could almost measure that with a Timex.

    68. Re:Carbon Dating by MillionthMonkey · · Score: 2, Funny

      Yes it's far more likely that this annual periodic wobble of a few percent is indicative of a past where carbon was a factor of 1000 times more radioactive than it is now, roasting the dinosaurs alive so they went extinct before they could leave the garden of Eden.

    69. Re:Carbon Dating by Comboman · · Score: 1

      Take an old vinyl record. Punch a new hole just off-centre. Play the record. Sometimes it's too high pitched (fast) and sometimes it's too low pitched (slow). Yet the song still takes the same length of time to play.

      You're assuming that the eccentricity of the earth's orbit is the only source of error. Over the time spans we use carbon dating for, the earth's orbit may have shifted or worse yet, the sun's output may have increased or decreased (in ways that are not periodic and thus difficult to compensate for).

      --
      Support Right To Repair Legislation.
    70. Re:Carbon Dating by markov_chain · · Score: 4, Funny

      Hi honey, I got you this fabulous graphite ring. It lasts longer than a diamond! Will you marry me?

      --
      Tsunami -- You can't bring a good wave down!
    71. Re:Carbon Dating by Anonymous Coward · · Score: 0

      Because of course everyone makes regular trip to diamond mines.

    72. Re:Carbon Dating by HiThere · · Score: 2, Interesting

      Why not gravitational field strength? That could be checked (though not easily) on the moon...or an asteroid.

      The standard model should be able to predict what effect changes in neutrino flux would produce. Changes in gravitational strength would be more difficult, as gravity hasn't been integrated into the standard model. Additionally, one would expect gravitational field strength to vary with the distance from the sun, so that matches. (Yes, earth's gravitational field is predominant by a large amount on the surface of the earth, but solar gravitation is not insignificant. It raises tides nearly as great as the lunar tides, and tides are based on change in field strength, not absolute strength.)

      --

      I think we've pushed this "anyone can grow up to be president" thing too far.
    73. Re:Carbon Dating by jd · · Score: 1

      I tried dating Sapphire, but she put me in a closed time loop.

      --
      It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
    74. Re:Carbon Dating by steveo777 · · Score: 2

      Hey, I'm a creationist and I think this is fascinating. For the record, I don't care how old the universe is. The older it is the more incredible I find things. Things never seem to quit getting bigger or smaller. Or older or newer. As I understand it (I am no quantum physicist) the Plank Length is pretty much the smallest thing that we can account for right now, yes?

      --
      This sig isn't original enough, it's time to come up with something witty...
    75. Re:Carbon Dating by pudro · · Score: 1

      Well, I know electromagnetic forces directly affect carbon dating, but they do so in a way that doesn't directly affect these other methods. I wasn't clear in that when I previously used the word "direct" I didn't mean "a direct cause", I was just stating that the connection between the Earth and Sun was a direct connection, as opposed to all implied indirectness of the watered down semantics used by scientists too afraid to admit that there is electricity in space.

      As far as the cause, I meant to imply that these changes in the electromagnetic forces alter something else that we don't fully understand, even though we thought we did because of how (relatively) constant these forces have averaged in our extremely short time observing them.

      --
      Freedom is assumed. Then they try to take it away. The degree to which you resist is the degree to which you are free.
    76. Re:Carbon Dating by gregbot9000 · · Score: 2, Informative

      They already fixed this problem year ago on paper.
      http://en.wikipedia.org/wiki/Nuclear_reprocessing http://en.wikipedia.org/wiki/Nuclear_breeder_reactor
      The only problems have been that oil was cheep and nuclear scary, so its never really left the design stages.

    77. Re:Carbon Dating by FlagMan666 · · Score: 1

      Well, since a second is defined based on hyperfine transitions of a cesium atom, a cesium clock would always be correct by definition. I guess we just have to accept that seconds are longer in some places than others!

    78. Re:Carbon Dating by gregbot9000 · · Score: 2, Funny

      Take an old vinyl record.

      What the hell is a vinyl record? Links please.

    79. Re:Carbon Dating by Anonymous Coward · · Score: 0

      Why yes. After correcting for this effect, scientists have now determined that the world is only 6,000 years old, younger than dinosaur fossils and Ted Kennedy!

    80. Re:Carbon Dating by BlueParrot · · Score: 1

      I'm more interested to know if this has any impact on nuclear waste. If decay can be sped up artificially one of the biggest objection points against widescale adoption of nuclear power in the US goes away.

      You mean something along the lines of destroying all of the actinides and intermediate halflife fission products, thus leaving only stuff that decays to natural levels within 300 years, while simultaneously reducing the quantity of waste generated for a given amount of power by almost two orders of magnitude?

      You mean something along the lines of what US scientists achived in the 1980ies before the government ordered the project to be shut down after promoters of clean-coal and natural gas alleged it would be a proliferation concern ( despite it being incapable of producing weapons grade plutonum ) ?

      You mean something along the lines of what has been repeatedly demonstrated in several countries, yet is still being opposed for political rather than technological reasons?

      Oh yes, read and cry:
      http://en.wikipedia.org/wiki/Integral_fast_reactor

    81. Re:Carbon Dating by smooth+wombat · · Score: 1

      Once the guy gives the girl a diamond they are past dating.

      Or, put another way, she'll pretty much have to.

      --
      We will bankrupt ourselves in the vain search for absolute security. -- Dwight D. Eisenhower
    82. Re:Carbon Dating by rickb928 · · Score: 1

      They've NEVER been my best friends, but then again I'm a guy.

      Every woman I have ever known has just looked at me when I pointed this out, like I was missing something...

      --
      deleting the extra space after periods so i can stay relevant, yeah.
    83. Re:Carbon Dating by DinDaddy · · Score: 1

      This is a good example of how many holes there might be in our theories about the universe.

      I know there's black ones, and maybe some white ones. What would this add? A brown one?

    84. Re:Carbon Dating by Anonymous Coward · · Score: 0

      Finally, I can have a car that runs on diamonds! More expensive than gasoline, and not carbon neutral!

    85. Re:Carbon Dating by ozbird · · Score: 5, Funny

      No, dogs are best friends around here. What women read /.?

      Dogs read Slashdot?!

    86. Re:Carbon Dating by Tisha_AH · · Score: 1

      This should be fairly easy to verify. We have space probes (Voyagers and Pioneers) that are at significant distances from the sun. One Voyager has even crossed out of the direct influence of the sun and into interstellar space.

      These probes were equipped with RTG's (Radio-ThermoElectric-Generators) that use Plutonium 239 as a heat source to generate electrical power for the probe. As these have been moving away from the sun for 25+ years we should be able to detect the differences in decay rates (depending upon the instrumentation on the RTG's).

      --
      Tisha Hayes
    87. Re:Carbon Dating by JayGuerette · · Score: 1

      ...and the time scale is therefore not geologic.

      I propose: theologic time scale.

    88. Re:Carbon Dating by Sylver+Dragon · · Score: 1

      Wow, it never ceases to amaze me the power that:
      ZOMG, NUKULAR!!1one1!!
      Has in our government. Just reading that explanation of the IFR and what it could have meant is truly saddening.

      --
      Necessity is the mother of invention.
      Laziness is the father.
    89. Re:Carbon Dating by Teancum · · Score: 1

      Einstein documented that there would be some variation due to the position of the test in a gravitational field, as there would be a small variation due to time dilation being closer to a gravity well. Relatively does account for some variation of time being closer or further from a gravitational source... and in fact the orbital path of Mercury was one of the early "proofs" offered for Relativity.

      I'm hoping that these scientists were intelligent enough to take this variation into consideration when pronouncing this new theory... and that this variation in elemental decay rates swamps any potential time dilation variation due to gravity.

      If not, all they've done is re-discover relativity in another context. I've seen major mistakes like this in the past, but it may be that they've discovered something genuinely new and can be explained even with this factor accounted for.

    90. Re:Carbon Dating by armareum · · Score: 1
      --
      Is this a rhetorical question?
    91. Re:Carbon Dating by Anonymous Coward · · Score: 0

      Dogs read Slashdot?!

      Men read slashdot... isn't that the same?

    92. Re:Carbon Dating by lena_10326 · · Score: 1

      The problem for Bible followers is that time of year discrepancies would be averaged out by durations longer than a few years. The older the sample the less effect there will be due to diminishing average deviations between sun and earth.

      --
      Camping on quad since 1996.
    93. Re:Carbon Dating by PitaBred · · Score: 1

      You aren't a strict creationist, though. "God working through Evolution" is a way many religious people reconcile science with their beliefs. "True" creationists reject scientific proof on grounds like you see in this article in favor of their beliefs, roughly along the lines of "See, this one thing wasn't known 100%! That means that scientists are lying bastards and you can't trust them with anything, but God has never lied, and he created you!"

    94. Re:Carbon Dating by pluther · · Score: 1

      ...and the time scale is therefore not geologic.

      I propose: theologic time scale.

      Wouldn't that only be a few thousand years?

      --
      If the masses can keep you down, you're not the Ubermensch.
    95. Re:Carbon Dating by steveo777 · · Score: 1

      Yeah, I've met them before. Pretty irrational. Yes, I guess you could say that if you had infinite power you could definitely jump start a universe at any point you want. But where's the fun in that?! I look at some things and they make absolutely no sense. My natural reaction is to want to figure it out, not cover it up and say, "Shh! My beliefs are too shaky for you to exist." What's the point in that?

      I honestly believe that there is never going to be a way to either prove or disprove the existence of God. Well, other than say, the babel fish. :)

      --
      This sig isn't original enough, it's time to come up with something witty...
    96. Re:Carbon Dating by Cloud+K · · Score: 1

      She's already taken. Don't steel.

    97. Re:Carbon Dating by Anonymous Coward · · Score: 0

      Theoretically, going on creationist theory, could any sort of a firmament (protective barrier around the earth that blocks radiation) have caused a substantial difference in the decay rates of isotopes used for the purpose of carbon dating things believed to be older than the biblical flood (at which point the firmament is believed to have been destroyed)?

    98. Re:Carbon Dating by Kazoo+the+Clown · · Score: 1

      Or more interestingly, Isochron dating. Carbon dating is only good for about 60K years and is calibrated against dendrochronology among other things, and while an increased error margin could be interesting, I would think such a margin would have more impact on things considered to be far older than 60K years.

    99. Re:Carbon Dating by PitaBred · · Score: 1

      Jump starting the universe at any point has a name: Last Thursdayism. It's not even worth thinking about, since there's nothing you can do about it ;)

    100. Re:Carbon Dating by Anonymous Coward · · Score: 0

      The article claims that decay is *decreased* meaning less emitted radiation per unit of time (Albeit by a tiny almost infinitesimal amount). Being able to artificially decrease decay would give the ability to make reactor waste and by-product less of an issue, but since the decrease appears to happen only certain as-yet unknown conditions apply, we'd have to guarantee that our artificial conditions remained in place for the entire life (not half-life) of the isotope in question. If I understand the premise correctly, when the hypothetical radiation reducing machine is turned off, emissions would go back to normal and the isotope lifespan would have been extended by some fraction of the amount of time it had spent within the field. I can't see this making the no nukes crowd any happier about nuclear energy, but I think nuclear physicists and engineers would be ecstatic about it. Imagine a reactor you can throttle without graphite rods,heavy water or whatever.
        Your suggestion of making decay *speed up* could be just as useful I suppose, make wastes "burn up" during a short time in the cooling ponds, or possibly run a reactor with a smaller amount of material. However; in a sense, we already have a way to speed up decay, it's called an atomic bomb and it's the real reason the no nukes crowd has such a problem with nuclear anything.

    101. Re:Carbon Dating by Austerity+Empowers · · Score: 1

      I was gonna throw out gravitational forces, although the sunspot observation wouldn't necessarily support that.

      It would be interesting if there were a correlation there.

    102. Re:Carbon Dating by Teancum · · Score: 2, Informative

      The other huge problem with breeder reactors is that the ability to process nuclear waste also gives you the ability to concentrate nuclear by-products to whatever levels of concentration that you desire.

      In other words, this gives whatever corporation, country, or agency that has one of these facilities the ability to build a nuclear bomb. That tends to scare off the diplomats and brings out the anti-nuclear crowd in hoards. Perhaps justifiably.

      In other words, it is better to bury nuclear waste in some obscure mountain in the middle of Nevada (obviously the last state that anybody would bother living in... according to the Washington DC policy-setting crowd) than it is to dispose of this sort of waste via these bomb producing factories.

      It isn't like fertilizer or other chemical factories can't produce bombs either, but that is irrelevant.

      BTW, my family is from Nevada and I love the state, and I hate to see it turned into a nuclear waste repository. The scars from nuclear bomb testing are bad enough.

    103. Re:Carbon Dating by Tenebrousedge · · Score: 1

      scientists too afraid to admit that there is electricity in space.

      I see you subscribe to a belief in the plasma cosmology ("Electric Universe Theory"). I would like to engage you in debate on this subject but I feel that this is not an appropriate forum for such a discussion. If you are interested, my email address is my slashdot username @gmail.com

      --
      Those who advocate genocide deserve every protection afforded by law, and none afforded by common human decency.
    104. Re:Carbon Dating by Lars+T. · · Score: 1

      On the Intarwebs, nobody knows you read Slashdot - unless you put it in your sig or something.

      --

      Lars T.

      To the guy who modded me down from perfect to terrible Karma - Apple haters still suck

    105. Re:Carbon Dating by Tim+C · · Score: 1

      I guess we just have to accept that seconds are longer in some places than others!

      General relativity already told us that - i.e. in an accelerating frame of reference.

    106. Re:Carbon Dating by Paradigm_Complex · · Score: 1

      Does this remind anyone else of the 'rules' behind FTL drive in most sci-fi books? Ya-da ya-da gravity well means no FTL but once you move away from the singularity ... zooooooooom. Granted I'm now comparing sci-fi "physics" with a minor observed variation in real life....but shhhh!

      Can you name a few books with those 'rules'? I can't think of any, and my sci-fi reading list is dangerously small at the moment.

      --
      "A witty saying proves nothing." - Voltaire
    107. Re:Carbon Dating by narcberry · · Score: 1

      The point is, there is an unconsidered variable. Not just the distance from the sun need be considered. Or other small effects such as solar flares.

      We simply do not have enough data to know how constant our sun has been. We can't even agree if it's getting hotter on earth, let alone the net neutrino emission change as a function of time from the sun.

      Anyhow, I hope someone builds a solaraltimeter device with this technology so I can know my current altitude with respect to the sun at all times.

      --
      Modding me -1 troll doesn't make me wrong.
    108. Re:Carbon Dating by surfinokie · · Score: 1

      And what does it mean for this poor cat I've got crammed in a box?

      --
      Chance 'em.
    109. Re:Carbon Dating by daniel_newby · · Score: 1

      The other huge problem with breeder reactors is that the ability to process nuclear waste also gives you the ability to concentrate nuclear by-products to whatever levels of concentration that you desire.

      Not really. All uranium reactors produce plutonium. Breeder reactors simply produce enough plutonium that separating it out would give economic payback. However commercial power reactors produce a mixture of plutonium isotopes that does not lend itself to strategic bombs, and plutonium is a hard material to make a bomb out of.

      In other words, this gives whatever corporation, country, or agency that has one of these facilities the ability to build a nuclear bomb.

      They already had it. If you can enrich the uranium fuel enough to make the reactor run in the first place, you can make a simple, cheap, utterly-reliable uranium bomb of the gun type.

    110. Re:Carbon Dating by WgT2 · · Score: 1

      Carbon has had it's problems without this being introduced.

      I think it more pertinent as to how this affects Argon dating methods.

    111. Re:Carbon Dating by jdoeii · · Score: 1

      On the surface you are correct. But variability of rate of radioactive decay is an extraordinary discovery, implications are huge. Up to now the constant rate of radioactive decay was fundamental. This discovery is on the scale of discovering dark matter. If confirmed (and it's a big if), this discovery will have very far reaching implications for physics.
      This is a really big deal. Carbon dating being suspect is just a small consequence.

    112. Re:Carbon Dating by Agripa · · Score: 1

      Niven's Known Space series only permitted hyperdrive at a constant 3 days per light year outside of the singularity generated by any large mass. With a more advanced hyperdrive, you could be anywhere in known space in 13 hours but not 12 hours because of the time spent in normal space around stars and planets. The singularity rule was later shown to be false and related to the missing dark matter. Ships that use hyperdrive within a singularity literally get eaten if they do not take precautions.

      Pournelle's Empire of Man series only permitted FTL travel within stringent rules that had the effect of making interstellar travel resemble intercontinental travel by ocean going ship with the wartime possibilities including blockade, fleet in being, and mining. Any given star only had a finite and predictable number of points where ships could enter or leave hyperspace for neighboring stars. Some stars had no such points and were essentially isolated. Travel could take weeks or even months.

      http://en.wikipedia.org/wiki/Alderson_drive

    113. Re:Carbon Dating by Anonymous Coward · · Score: 0

      Mine does, but has a hard time understanding English phrases and idioms.

    114. Re:Carbon Dating by vlad30 · · Score: 1

      Either He said 'let there be light" where the luminosity was so bright it aged everything very quickly or maybe that was the Big Bang and as god moved at near Light Speed while creating the universe due to relativity 15 billion years was only 6 Days (he rested on the Seventh)

      of course that means he must be outside our universe, a being of many dimensions and there fore exists everywhere and all times simultaneously

      Note :- Not a creationist

      --
      Your'e all thinking it, I just said it for you
    115. Re:Carbon Dating by fatphil · · Score: 1

      I'm not assuming anything more than the original questioner when he conceived his question.

      --
      Also FatPhil on SoylentNews, id 863
    116. Re:Carbon Dating by Teancum · · Score: 1

      It isn't quite true that countries who have a nuclear plant also have the concentrators necessary for nuclear fuel. Several of the "third world" countries who have reactors get that fuel from a "nuclear power" who produces that fuel for them.

      The point with breeder reactors... if they are operating at peak efficiency and re-using their own waste as most of them are designed to do... have those facilities in place. It is more than just plutonium that is extracted, although that is a major component of it.

      This is the major political issue that confronts those who would build a breeder reactor. Indeed the French nuclear power industry does precisely this process... and uses the extra Plutonium to make bombs for its country's arsenal. Since France already had the capability to make nukes prior to the construction of that plant, it didn't really make major news media headlines when it was built.

      My point is that it is precisely this and a few other political issues that keep breeder reactors from being built, not the technical issues involved with actually getting the thing up and running, or even the cost of building those kind of facilities.

      The breeder reactor that is operating at the Idaho National Engineering Laboratory is a model facility and works beautifully.... much to the dismay of the contractors and engineers who built her and have seen people dismiss that technology as science fiction.

    117. Re:Carbon Dating by Alsee · · Score: 1

      Just a suggestion, but it sounds to me like taking the term "creationist" for yourself might not be such a good idea. In most common usage "creationist" pretty well means theist&anti-science-loon. If you're a theist-god-created-the-universe & science-substantially-accurately-describes-how, you're probably better off with just "theist" or, if you have looked at biology and are generally satisfied, "theistic evolutionist".

      It may save you (and others) some unneccessary headaches.

      -

      --
      - - You can't take something off the Internet! That's like trying to take pee out of a swimming pool.
    118. Re:Carbon Dating by Alsee · · Score: 1

      I don't know if this will lead to anything that supports a young earth theory

      No.

      YEC has always been proven wrong by pretty much everything on earth. If you dig in the arctic or antarctic icepack you can count the visible yearly layers. If you dig down 1929 layers you can find traces of volcanic ash from the famous volcanic eruption that destroyed Pompeii in 79 A.D. By digging and counting yearly layers you can find traces of every major volcanic eruption in recorded history. There are well over a hundred thousand visible countable yearly layers in the ice pack, and they are scattered with exactly the traces of volcanic eruptions you'd expect over that time span. Actually there's about 800,000 years worth of layered icepack, but beyond about a hundred-odd-thousand years down the layers get squeezed too thin and blur too close together to individually count.

      So the earth is visibly countably well over a hundred thousand years old. In addition, there was no possible Global Flood, at least not within the last hundred-odd thousand years anyway. It would have melted underlying snowpack, and it would have left a huge visible layer of mud deposit in the ice. It's just Not There.

      Another example is the Grand Canyon. Yeah, it's been suggested it was carved quickly by a huge fast torrent of water after Noah's Flood, but that suggestion is blatantly bogus if you think about it... a huge fast torrent of water would blast its way in STRAIGHT LINES cutting through anything in its way. It would easily wash up and over any minor dirt bumps in the way. If you look at the Grand Canyon, it is riddled with countless U-turns. Often tight U-turns twisting around trivially small bumps in the ground. Bumps that fast water would easily wash over. It doesn't take a geology PhD to see that the Grand Canyon was not carved quickly - it follows exactly the sort of winding looping path you'd get from a reasonably small slow flow of water twisting around every tiny obstacle.

      There are hundreds and thousands of other examples, the basic point is that any sort of "young" timeline for earth is total fiction, and YEC'ers are twisting and bending the facts trying to support the answer they desperately WANT to get. The earth is Old.

      -

      --
      - - You can't take something off the Internet! That's like trying to take pee out of a swimming pool.
    119. Re:Carbon Dating by Anonymous Coward · · Score: 0

      AAAhh, the futility to set a Fixed Reading to things. And the beat goes on. LHC should uncover some mysteries though.

    120. Re:Carbon Dating by bill_mcgonigle · · Score: 1

      destroying all of the actinides and intermediate halflife fission products, ....while providing enough carbon-neutral power to provide all of the US's electrical needs for the rest of the century.

      --
      My God, it's Full of Source!
      OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
    121. Re:Carbon Dating by Anonymous Coward · · Score: 0

      I'm more interested to know if this has any impact on nuclear waste. If decay can be sped up artificially one of the biggest objection points against widescale adoption of nuclear power in the US goes away.

      If radioactive decay can be sped up enough then haven't you just invented a new type of atomic bomb?

    122. Re:Carbon Dating by Anonymous Coward · · Score: 0

      Would Radioisotope thermoelectric generators [wikipedia.org] generate more energy when closer to the Sun, than away from the Sun, or simply shielded from it?

      From what I understand of the article, it would generate more energy when further from the sun.

    123. Re:Carbon Dating by Crazyswedishguy · · Score: 1

      From what I understand, radioactive decay is actually slower during solar flares, so I would guess it's also slower when distance to the sun is reduced.
      Perhaps shielding radioactive waste from solar neutrino flux could accelerate decay?

      On another note, I think you were looking for the word "effects".

      --
      This space up for sale.
    124. Re:Carbon Dating by Anonymous Coward · · Score: 0

      If some field from the sun is changing that, it should be detectable in atomic clocks.

      How would you want to detect it? Is there a more exact clock you could measure the caesium clock against?

    125. Re:Carbon Dating by keraneuology · · Score: 2, Funny

      Please... no moh jokes

      --
      If the g'vt kept the data on you that google does you'd better believe you'd be calling it "doing evil"
    126. Re:Carbon Dating by torkus · · Score: 1

      Niven's known space is an easy example, some pournell quoted by someone else as well. The Gripping Hand and Mote in Gods Eye are part of the CoDominium Future History series co-written by them both ... uses wormholes dependant on gravity wells greated by stars.

      Then there's the Honor Harrington series by David Weber. Dahak series uses the premise to a limited degree. You'll find it in The Path of the Fury (weber again) and I believe the bezerker series by saberhagan.

      Scratching my head because I know there's more. Many Sci-Fi books use it as a basis because otherwise it makes things TOO easy...and conflict either too impossible or too devastating :)

      --
      You can get rich if you own a politician, but you have to be rich to buy one in the first place.
  2. How To Test It by eldavojohn · · Score: 4, Interesting

    First, some theorists think the sun produces a field that changes the value of the fine structure constant on Earth as its distance from the sun varies. That would certainly affect the rate of nuclear decay. Another idea is that the effect is caused by some kind of interaction with the neutrino flux from the sun's interior which also varies with distance. Take your pick.

    You left out the best part of the paper, where they propose how to test these theories:

    These conclusions can be tested in a number of ways. In addition to repeating long-term decay measurements on Earth, measurements on radioactive samples carried aboard spacecraft to other planets would be very useful since the sample-Sun distance would then vary over a much wider range. The neutrino flux hypothesis might also be tested using samples placed in the neutrino flux produced by nuclear reactors.

    Sounds like we could test the latter relatively easily.

    Also, Jeeeeeeeeeeeeeeeeeere H. Jenkins!!!

    --
    My work here is dung.
    1. Re:How To Test It by nine-times · · Score: 3, Interesting

      My question would be, once they discover the cause, can we use that information? First application that comes to mind that I'd love to see is, if we can shorten something's half-life, can that be used to help dispose of radioactive nuclear waste, thereby removing the main objection to nuclear power?

    2. Re:How To Test It by HuguesT · · Score: 1

      The half-life of Uranium 238 (5x10^9 years) will require some serious shortening.

    3. Re:How To Test It by meringuoid · · Score: 1

      We've already sent radioactive samples to other planets. Every deep-space probe carries a radioactive power source, which I believe means a lump of plutonium and a thermocouple to produce a current from its heat. Has the power supply to Voyager been dropping off faster than expected? If so, keep an eye out for the same effect as New Horizons heads out into interstellar space over the next couple of decades.

      --
      Real Daleks don't climb stairs - they level the building.
    4. Re:How To Test It by meringuoid · · Score: 1
      First application that comes to mind that I'd love to see is, if we can shorten something's half-life, can that be used to help dispose of radioactive nuclear waste, thereby removing the main objection to nuclear power?

      If you have a fantastically intense neutrino source handy, go to it. But that probably means a nuclear reactor. In which case reprocessing the stuff and putting it back in the reactor for fuel will probably be more effective.

      --
      Real Daleks don't climb stairs - they level the building.
    5. Re:How To Test It by Watson+Ladd · · Score: 4, Informative

      Actually the more radioactive something is the faster it decays. Uranium in waste is not the problem, the minor actinides are.

      --
      Inventions have long since reached their limit, and I see no hope for further development.-- Frontinus, 1st cent. AD
    6. Re:How To Test It by kmac06 · · Score: 1

      Uranium 238 is not radioactive enough to be concerned about (or at least its far down the list of isotopes to be concerned about).

    7. Re:How To Test It by jamie · · Score: 3, Insightful

      Yeah, kdawson and I have been discussing this. This is an interesting story but of course the research needs to be duplicated and checked, objections need to be raised and addressed and so on.

      Cassini is a good example... for the past 11 years it's carried 30 kg of Pu-238 from Earth (1 AU) to Saturn (10 AU), and its decay has been its only source of electrical power. If the Earth's 3% annual variation in distance from the Sun causes a 0.4% variation in the half-life of radioactive silicon, wouldn't the 900% change in Cassini's solar distance caused, at the very least, a head-scratcher for mission control?

      So I'm super-skeptical about this.

      The hard part about running tests to confirm this alleged effect here on Earth is that it may take years to get convincing results. One might also put a few samples of radioactive materials and sensitive detectors on HEO satellites and get a 0.1% change in solar distance every few days. If there's a detectable difference in radioactive decay it could be statistically significant in a matter of weeks. Rather expensive test, though. My guess is there's a better explanation for the observed effect (seasonal changes in temperature/humidity on the detection equipment maybe) and after a handful of grad students write papers about their inability to replicate the effect, this will be dismissed and filed away. Still interesting though.

    8. Re:How To Test It by EMeta · · Score: 1

      The difference the researchers found was less than .1%. Even if farther in the solar system it was greater than that, it's unlikely to change by enough that the probes' sensors can detect it.

    9. Re:How To Test It by jnik · · Score: 2, Informative

      but of course the research needs to be duplicated and checked, objections need to be raised and addressed and so on.

      Before that, the paper needs to actually be peer-reviewed and published. arXiv's a non-reviewed, quick dissemination venue, not a reliable journal.

    10. Re:How To Test It by FireFury03 · · Score: 1

      The half-life of Uranium 238 (5x10^9 years) will require some serious shortening.

      Why exactly do we need to dispose of U238 (which occurs naturally in relatively large quantities anyway)?

      The highly radioactive products which come from running a nuclear reactor are the problem, and highly radioactive means a much shorter half-life. Of course, the enviro-hippies love to harp on about the enormous half-life of uranium because it's a wonderfully big number to quote at the public... it also demonstrates that they have absolutely no clue.

    11. Re:How To Test It by SirLoadALot · · Score: 1

      Realistically, the neutrino flux idea has already been tested by accident -- there is quite a bit of radioactive material in a nuclear reactor -- it's a nuclear reactor! I suspect heads would have been scratched quite a bit if the decay of material in a nuclear reactor varied with the neutrino flux, i.e. with the reaction level. Similarly, several deep space probes like Pioneer and Voyager have had RTG power and their power levels have been tracked for long periods of time -- decades. It wouldn't be hard to back track and see if something unusual was happening, and try to correlate it to the distance from the Sun.

    12. Re:How To Test It by T.E.D. · · Score: 1

      Also, Jeeeeeeeeeeeeeeeeeere H. Jenkins!!!

      For those of you who don't know, Jenkis was a chemist who ran into the lab with a bucket of water while the rest of the chemists were trying to formulate a plan on how best to put out the phosphorous fire.

    13. Re:How To Test It by torkus · · Score: 1

      Agreed, but anti-nuclear activists love to spout numbers like that because ZOMG IT WILL BE AROUND FOREVERZ. Never mind what's actually dangerous and a concern to society!

      --
      You can get rich if you own a politician, but you have to be rich to buy one in the first place.
    14. Re:How To Test It by jd · · Score: 1

      Neutrinos cannot be absorbed at a different energy than the anti-neutrino would be released at had the decay worked in that direction instead. This alters the problem slightly. If you could find a way of shifting the energy off the high-energy neutrinos, so that there were far more neutrinos of the ideal energy, you increase the number of the desired neutrinos and therefore increase the rate of decay. The other question is HOW the neutrinos interact. I'm not convinced there's a good answer to that, given that it's still very new to think of radioactive decay being variable. The point being, if you know how neutrinos need to interact with nuclei/quarks/sub-quark particles/whatever, you've a better chance of rigging the odds in your favour. It might be something relatively trivial (a neutrino can only be absorbed if such-and-such a state exists) or it might be something much tougher (you need a direct strike on the third higgs particle on the left, but if and only if there is a fat lady singing somewhere on the planet).

      You could probably experiment with the idea of hitting a specific target by using a diffraction grid and a segmented neutrino detector. If neutrinos can only be absorbed at very specific points, diffracting them should produce changes in probability that are a function of the density, and the segments will record a varying absorbtion rate accordingly. If it's a state thing, then the change in state should (I would think) be propogated between close enough detectors, so the absorbtion rate will NOT vary the way you would predict from a simple interference pattern. It'll still vary, but the variation could be expected to be skewed. (Simply take the sum of the square of the absolute differences between actual and predicted for each detector. Over time, the variance should remain roughly constant on an unskewed system, but should be asymtotic to that same constant for a skewed system.)

      --
      It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
    15. Re:How To Test It by Sylver+Dragon · · Score: 1

      My question would be, once they discover the cause, can we use that information? First application that comes to mind that I'd love to see is, if we can shorten something's half-life,

      That was my first thought. Assuming it's something we can control easily and can happen at a usable level; this could be a boon for radioactive waste disposal.

      For things like Sr-90 and the like which are radioactive enough to cause problems for the next few hundred years, it would be great to be able to force them down to a stable form quickly. I also wonder if in doing so we could setup an over-sized RTG and capture the resulting heat as useful energy. The big thing is going to be how much energy does the speed up process takes?

      --
      Necessity is the mother of invention.
      Laziness is the father.
    16. Re:How To Test It by Tenebrousedge · · Score: 1

      Interesting proposal, but isn't the problem with neutrinos that they only rarely interact with matter? IANAPP, but it seems like that experiment would be extremely difficult to construct.

      I've been wrong before, though.

      --
      Those who advocate genocide deserve every protection afforded by law, and none afforded by common human decency.
    17. Re:How To Test It by jd · · Score: 1

      Neutrinos normally interact very very rarely - well, except for the extremely high-energy neutrinos, which get absorbed at or near the surface. One reason neutrino detectors are deep underground is that they want the low-energy neutrinos from the sun, not the really high-energy stuff. However, if radioactive decay is caused (even in part) by neutrino interactions, then radioactive decay must primarily involve easily-absorbed neutrinos, which means the really high-energy stuff.

      That's the principle I'm largely relying on. Now, the other part - setting up a diffraction grating and using diffraction patterns to demonstrate variation in decay rates - that's tougher. What's the wavelength of a neutrino? Does anyone know? And does anyone know how to build a grating that fine? (The grid must be roughly the same scale as the thing you're diffracting. I'm not sure what the spacing is between sheets of graphite, or how large the linear motor layer is for skimming electrons over in a superconductor, but those might actually be too big to diffract something like a high-energy neutrino.)

      In other words, this would not be a simple experiment. BUT, if it could be done, it might make a massive difference in accelerating decay. Once you accelerate decay locally, regular neutron emissions would accelerate the decay of the rest.

      --
      It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
    18. Re:How To Test It by HuguesT · · Score: 1

      Because of so-called Depleted Uranium (DU), littered everywhere on modern battlefields.

    19. Re:How To Test It by FireFury03 · · Score: 1

      Because of so-called Depleted Uranium (DU), littered everywhere on modern battlefields.

      You could always, you know, shove it in a nuclear reactor and generate electricity...

  3. Silicon-32 Decay Variation by imstanny · · Score: 3, Funny

    ...has Pamela Anderson been given the news?

    1. Re:Silicon-32 Decay Variation by sdpuppy · · Score: 2, Funny
      Wait they gave her radioactive Silicon-32 instead of Si-29?

      No wonder why those things glow...

  4. Pioneer Anomaly by andyh3930 · · Score: 4, Interesting

    Could this be the cause of the Pioneer Anomaly ?

    1. Re:Pioneer Anomaly by Thelasko · · Score: 0, Redundant

      I was thinking the same thing.

      --
      One of our competitors trademarked the term "hypothesis". From now on, we will call them "boneheaded ideas".
    2. Re:Pioneer Anomaly by eldavojohn · · Score: 1

      Could this be the cause of the Pioneer Anomaly ?

      I heavily doubt it, the Pioneer Anomaly is essentially a very small but unexplained forced. I'm not a physicist but I'm not sure how you plan to link radioactive decay rates with small forces.

      There are many things we don't know about physics ... yet. Until we have a unified field theory, you're going to have a hard time linking them.

      --
      My work here is dung.
    3. Re:Pioneer Anomaly by Smidge204 · · Score: 1

      Conservation of momentum?

      Radioisotope ejects a particle of non-zero mass at some velocity, and the remainder "recoils" from the ejection.

      Farther from sun -> Faster decay -> More mass ejected -> More momentum transferred... provided there is some kind of shield action to make the ejection of radiation directional... like a communication dish facing backwards towards earth.

      Is this enough to actually account for the Pioneer effect? No idea. I'll leave that up to the astrophysicists.
      =Smidge=

    4. Re:Pioneer Anomaly by ach1000 · · Score: 1

      I heavily doubt it, the Pioneer Anomaly is essentially a very small but unexplained forced. I'm not a physicist but I'm not sure how you plan to link radioactive decay rates with small forces.

      Part of the Pioneer Anomlay is though to be radiation pressure from the radioisotope thermoelectric generators (RTGs) although there is still an unexplained part. However is the rate of decay varies with the distance from the sun then the radiation pressure from the RTGs will also change (and no longer match our models).

    5. Re:Pioneer Anomaly by Anonymous Coward · · Score: 1, Insightful

      Well if you can get all the ejected mass to go in the same direction you just might get an effect that just migh tbe measurable with really good instruments.

      But as the ejected particles will go in random directions, the net effect will be zero.

    6. Re:Pioneer Anomaly by Anonymous Coward · · Score: 0

      Might wanna read the second half of that post, chief.

    7. Re:Pioneer Anomaly by Muad'Dave · · Score: 1

      If there were enormous differences in the amount of shielding on different sides of the spacecraft and if it weren't tumbling, then maybe. Otherwise I'd think there wouldn't be any net momentum change because the direction of the emitted particle (and subsequently the vector of the momentum transfer) would be random.

      --
      Tiller's Rule: Never use a word in written form that you've only heard and never read. You will end up looking foolish.
    8. Re:Pioneer Anomaly by Anonymous Coward · · Score: 1, Informative

      Pioneer isn't tumbling. It keeps its antenna pointed at a certain place in Earth's orbit.

      Since we can no longer talk to it, we can't tell it to point its antenna at Earth, and are left with it pointing to the last place we told it to. So we can, given the width of its beam, talk to it for about four months of the year.

    9. Re:Pioneer Anomaly by Anonymous Coward · · Score: 0

      That was my thought too. And it's already been proposed that the pioneer anomaly could be caused by changes in the fine structure "constant"...

      Quite exciting, really, eh?

    10. Re:Pioneer Anomaly by nusuth · · Score: 1
      If the decay rate is dependent distance from sun, there already is a mechanism for asymmetric momentum transfer to speed pioneer up.

      For simplicity assume there is a solid radioactive sphere orbiting sun. As a decay particle is created, it pushes the sphere away from direction of its movement. If it escapes the sphere, that is the end of story. The decay results in net thrust. If it hits an atom, there will be another momentum transfer event exactly in the opposite direction and magnitude of the initial event, with no net momentum transfer when two events are combined. Obviously, if the particle travels outward, it has a better chance of escaping the sphere and creating net thrust. If it is traveling inward, it has a better chance of hitting another atom on its way our, resulting in no momentum transfer. On average, the side closer to Sun pushes the hemisphere away from Sun, the hemisphere away from the Sun pushes the sphere closer to the Sun. However, the situation is not symmetrical as decay is faster closer to Sun. Therefore the net effect is pushing the sphere away from the Sun.

      The case is general. No matter what the geometry of the source is, there will be an inward pressure due to escaping particles. And this pressure will be asymmetrical due to different decay rates. However, I don't think the size of Pioneer's source is big enough to push the craft measurably due to this effect. I'm mainly posting this to undo a botched mod.

      --

      Gentlemen, you can't fight in here, this is the War Room!

  5. Cool! by kmac06 · · Score: 4, Interesting

    If this turns out to be true, and not a product of some experimental error, it sounds like it could lead to some very interesting new theories. If it's due to neutrino flux, that indicates neutrinos interact much more strongly than previously thought.

    1. Re:Cool! by Gewalt · · Score: 2, Insightful

      It also means the next generation neutrino detectors are going to be nuclear decay based. That should prove interesting indeed.

      --
      Modding Trolls +1 inciteful since 1999
    2. Re:Cool! by Ironclad2 · · Score: 1

      This is one of a few difficulties I have with the paper. They do not talk about what specific neutrino-nucleus interactions would be stimulated, nor do they ballpark numbers for rates based on the known solar neutrino flux. Also, their proposed method of testing their hypothesis may hit a snag: while the sun produces a very pure flux of neutrinos, reactors produce a nearly-pure flux of antineutrinos. There are differences in how the two interact, so more investigation should be done to determine if such a proposed experiment could return a signal. If it means anything, I do happen to be a graduate student working in the field of neutrino physics.

  6. I want my money back by codeButcher · · Score: 0, Redundant

    Seems that I did all those pesky logarithmic decay problems for Physics 101 in vain....

    On a more serious note, how does this influence all those archaeological and geological dating techniques that are based on radioactive decay rates?

    --
    Free, as in your money being freed from the confines of your account.
    1. Re:I want my money back by Anonymous Coward · · Score: 0

      It doesn't influence them any differently.

    2. Re:I want my money back by Gewalt · · Score: 2, Insightful

      Unless the earth has changed orbit by a very significant factor, it doesn't make any difference at all.

      --
      Modding Trolls +1 inciteful since 1999
    3. Re:I want my money back by compro01 · · Score: 1

      AFAICT, not significantly. The variance here is a good bit smaller than the margin of error in those methods.

      --
      upon the advice of my lawyer, i have no sig at this time
    4. Re:I want my money back by SleptThroughClass · · Score: 1

      Seems that I did all those pesky logarithmic decay problems for Physics 101 in vain....

      Don't worry. As TFA comments point out, the pattern more closely resembles the seasons than distance to the Sun. So if you and all the other students are doing those decay problems at about the same time during the year then all your answers will be close enough for the professor. On the other hand, if you try to hand in your answers six months later you'll find that your answers are too out of phase for the professor to accept. Do your work during the winter and you'll be fine, but not when it is hot and sunny outside.

  7. Uhhh... by oodaloop · · Score: 3, Funny

    So the earth may really be 5,000 years old? Shit. I have some apologizing to do on the Creationism vs Evolution yahoo message boards.

    --
    Tic-Tac-Toe, Global Thermonuclear War, and relationships all have the same winning move.
    1. Re:Uhhh... by PrescriptionWarning · · Score: 1

      i would think this means the earth may really be much older, like ten duotrigintillion (googol) years. Which given the near infinite size of space would make sense that its nearly infinitely old as well.

  8. Oxymoron of the day by Anonymous Coward · · Score: 1, Insightful
    the sun produces a field that changes the value of the fine structure constant on Earth

    variable constant

    1. Re:Oxymoron of the day by turgid · · Score: 1

      variable constant

      Bah! God does not write in C++.

  9. Building materials far from the sun by Scotteh · · Score: 1

    I wonder what kind of new building materials would be available if we colonized a planet such as Mars or perhaps Pluto or something far from a star. Perhaps the perfect building material is no good on earth because of nuclear decay?

  10. dendrochronology! by apodyopsis · · Score: 2, Funny

    See! I told you that dendrochronology was more accurate!

    http://en.wikipedia.org/wiki/Dendrochronology

    I pity the man who has to interrupt two scientists arguing about decay rates and tell them they were both right.

  11. General relativity to the rescue? by arkham6 · · Score: 2, Interesting

    Could perhaps the distance between the earth and the sun and the relationship for nuclear decay be in some way effected by the gravitational field fluctuations that occur as well? Time is dilated by gravity, so perhaps are we seeing a further proof of Special relativity?

    Or are they simply looking for casual relationships where none actually exist. Perhaps the decay rate relates to the amount of pastafarians on earth.

    1. Re:General relativity to the rescue? by the_one(2) · · Score: 1

      I'm no physicist but wouldn't the effect of gravity be very, very minor? I admit my first thought after reading the title was that gravity was responsible but i suspect the physicists already considered that and that somehow TFS reflects at least somewhat what the physicists think :)

    2. Re:General relativity to the rescue? by Colonel+Korn · · Score: 2, Insightful

      Could perhaps the distance between the earth and the sun and the relationship for nuclear decay be in some way effected by the gravitational field fluctuations that occur as well? Time is dilated by gravity, so perhaps are we seeing a further proof of Special relativity?

      Or are they simply looking for casual relationships where none actually exist. Perhaps the decay rate relates to the amount of pastafarians on earth.

      Since the measurement and the material are both in the same location, time dilation would affect them both to the same extent, meaning that the detector would not be able to measure a difference in the half life.

      --
      "I zero-index my hamsters" - Willtor (147206)
    3. Re:General relativity to the rescue? by mlwmohawk · · Score: 1

      Damn!!! You beat me to that

    4. Re:General relativity to the rescue? by Anonymous Coward · · Score: 0

      However our time would be equally effected, we wouldn't see a difference unless observing outside the influence of the Sun's gravity.

    5. Re:General relativity to the rescue? by complete+loony · · Score: 1

      If there was time dilation at work, the observer in the same room measuring the decay would be in the same reference field and wouldn't notice anything different.

      --
      09F91102 no, 455FE104 nope, F190A1E8 uh-uh, 7A5F8A09 that's not it, C87294CE no. Ah! 452F6E403CDF10714E41DFAA257D313F.
    6. Re:General relativity to the rescue? by sjwaste · · Score: 3, Funny

      Could perhaps the distance between the earth and the sun and the relationship for nuclear decay be in some way effected by the gravitational field fluctuations that occur as well? Time is dilated by gravity, so perhaps are we seeing a further proof of Special relativity?

      Or are they simply looking for casual relationships where none actually exist. Perhaps the decay rate relates to the amount of pastafarians on earth.


      This isn't Craigslist, chief.

    7. Re:General relativity to the rescue? by HuguesT · · Score: 1

      The GR effects are real but much weaker than those reported.

    8. Re:General relativity to the rescue? by bdol · · Score: 1

      Time is dilated by gravity, so perhaps are we seeing a further proof of Special relativity?

      No because both the observer and the observed are experiencing the same gravitational magnitude. When time does "slow down," it occurs for both us and the material.

  12. Two counter-examples by Wills · · Score: 4, Insightful

    We've long thought that nuclear decay rates are constant regardless of ambient conditions (except in a few special cases where beta decay can be influenced by powerful electric fields).

    If you count the presence or absence of observation as part of "ambient conditions", there are two cases where nuclear decay rates are affected by ambient conditions: The quantum Zeno effect and the quantum anti-Zeno effect.

    1. Re:Two counter-examples by Fallingcow · · Score: 1

      Man, wikipedia is so terrible for these kinds of things, at least for those of us who don't already know most of it.

      I just read most of a half-dozen different articles, trying to find one that didn't descend into (to me) gibberish past the second sentence or so, so that I could bootstrap my way up to understanding it. Mind you, I'm already familiar with Zeno of Elea, so that first article made some sense, but every one I followed, looking for clarification, was harder and harder to understand.

      I think that the chief culprit may be the way Wikipedia handles mathematical notation. Every discipline has its own shorthand--small delta means a in this branch of physics, b in another branch, c in general mathematics, d in some specific branch of mathematics, and has a whole set of other meanings in the field of logic.

      Often, articles including lots of mathematical shorthand never bother to translate it to English, and the symbols themselves are not (and cannot be, I suspect) linked to articles about themselves, nor do they have some alt-text mouseover glossary. It doesn't need to be intrusive, but it should be there. As a consequence, any Wikipedia articles that rely heavily on such things are entirely worthless to me; maybe if they just had a page for each field of study that gave a dictionary of symbols or something, and linked it on every page where it was relevant... I don't know.

      I do know it's a pain in the ass trying to figure out WTF "The sum of (lower-case delta squared times capital gamma minus 4, divided by lower-case rho)" means on this particular page, since just one or two click might have me on a page where it would mean something entirely different.

      Again, it wouldn't matter if the authors went on to describe what they meant in English, but they almost never do. It's frustrating, because there are a lot of topics where I've started to get in to an article, only to find the meat of it 75% filled with labelled-but-unexplained equations, and not a single damned link to a "here's WTF all of this means in this particular context" page, or anything like it.

      *ahem*, sorry, that had been stewing for a while. I just hate knowing that there's so much info right in front of me, but that *last* little bit that would dramatically reduce the time it takes me to figure it all out just isn't there.

  13. It's a trick! by NuclearError · · Score: 5, Funny

    They are just trying to force me to buy new updated nuclear engineering text books. I won't fall for it!

    --
    Nuclear engineers build weapons. Civil engineers build targets.
  14. Phlogiston by Migraineman · · Score: 4, Funny

    It's the Phlogiston, released by the central furnace of the sun. Doesn't seem quite so funny now, does it Pinkerton?

    Now if you'll excuse me, I have an appointment with my Phrenologist.

    1. Re:Phlogiston by The_Chicken_205 · · Score: 1

      I, however, have one with my reverse-phrenologist...

      Now, where did I put my painkillers?...

      --
      I need a new sig...
    2. Re:Phlogiston by Anonymous Coward · · Score: 0

      Its Dark Phlogiston(tm).

  15. Warp Within the Solar System - Not Advised by Anonymous Coward · · Score: 0

    Clearly, this is why jumping to warp speed within the solar system is not a safe practice.

  16. Fine structure constant by kmac06 · · Score: 5, Interesting
    One possible explanation proposed in this paper is:

    In their theory, the Sun produces a scalar field which would modulate the terrestrial value of the electromagnetic fine structure constant EM.

    The fine structure constant (about 1/137) has been measured to a whopping 10 significant digits, one of the most precisely measure physical constants. If there is a seasonal variation enough to influence decay rates by .1%, wouldn't this show up in different experiments measuring the fine structure constant?

    1. Re:Fine structure constant by Watson+Ladd · · Score: 4, Interesting

      They mention that in the paper. They suggest modifying the electron-proton mass ratio as well as the electromagnetic interaction strength. So we might find out what's going on on October 10.

      --
      Inventions have long since reached their limit, and I see no hope for further development.-- Frontinus, 1st cent. AD
  17. More efficient fission? by FriendlyPrimate · · Score: 1

    If we could figure out what mechanism is at work here, perhaps in the distant future, we could learn to alter the half-lives of elements. That could lead to 100% utilization of Uranium in nuclear reactors (instead of being left with a bunch of leftover fissionable material that cannot be used), or perhaps even being able to use other fissionable materials other than Uranium as an energy source.

    1. Re:More efficient fission? by DaveV1.0 · · Score: 1

      instead of being left with a bunch of leftover fissionable material that cannot be used

      Nonsense. Spent fuel plates or rods can be reprocessed into new plates or rods.

      --
      There is no "-1 offended" or "-1 you don't agree with me" mod options for a reason.
    2. Re:More efficient fission? by Punko · · Score: 1

      There would be more fission if we could add neutrinos to make the decay happen more quickly. However, if the addition of neutrinos slows the decay, we can't do much. There isn't much we can do to reduce the existing level of neutrino interaction to try and speed up the decay rates.

      --
      If only we could fall into a woman's arms without falling into her hands
  18. Seriously : No by DrYak · · Score: 4, Informative

    Does this have any ramifications for carbon dating?

    Seriously : No.
    For 2 reasons.

    I. - Effect on carbon
    For now carbon isn't on the list of the elements that seem affected by the distance to the sun.

    II. - Not a significant variation.
    in TFA, variation seem to be very well correlated with the distance *BUT* these variations are really small : only a small fraction of percent (~0.15%). To cite one of the commenters on TFA's blog thread :

    That said, itâ(TM)s not *terribly* unsettling to me; the variations are small (measurable,but small) and to me itâ(TM)s all part of the Wonderful World of the Weird that is QM.

    If we discover that carbon is among the elements influenced by the sun too, those mere ~0.15% of variation will be insignificant compared to the skew that happens with varying concentration of carbon-14 in the atmosphere (see wikipedia's graph of variation) - which already requires that we do calibrations anyway.
    (Current carbon dating doesn't extrapolate the age purely by deducing the levels from the decay rate, but instead uses tables where corrections have been inserted based on the carbon dating of thing with known age)

    So in short : for now it doesn't have any ramification and anyway it couldn't have any more than we already compensate for.

    --
    "Sufficiently advanced satire is indistinguishable from reality." - [Tips: 1DrYakQDKCQ6y52z6QbnkxHXAocMZJE61o ]
    1. Re:Seriously : No by Rich0 · · Score: 2, Interesting

      Still, it makes you wonder whether other astronomical events could have had an impact. Suppose some supernova nearby blasted the earth with neutrinos and caused 10% of a sample of isotope to decay in seconds - then return to normal rates of decay? Suppose the sun drifted into some cloud of dark matter a billion years ago and that messed things up?

      We always assume the laws of physics are the same everywhere. This is probably true at a fundamental level, but it doesn't mean we understand all the laws of physics. A few hundred years ago you could have convinced a scientist that you could manipulate gravity (with hidden electromagnets). The reality isn't that gravity didn't work right, but rather that there was a previously-unknown force at work. There could be all kinds of fields at work in the universise that haven't been apparent to us simply because they're flat on the scale that we've experienced them. If a force only causes local effects but only within certain regions of the univerise and we're not in one of them then we'd never know it exists until the earth happens to pass into such a region and all kinds of stuff goes haywire.

    2. Re:Seriously : No by avandesande · · Score: 2, Interesting

      You are assuming that the neutrino flux from the sun is constant. I don't think it is unreasonable to think that this may have some effect on carbon 14 dating.

      --
      love is just extroverted narcissism
    3. Re:Seriously : No by Free+the+Cowards · · Score: 1

      Considering that the neutrinos are generated as a direct product of the nuclear reactions which produce the light and heat which keep us all alive, reactions which to the best of our knowledge (which could be wrong, but it's a long shot) proceed at a rate which changes only very slowly over time, I think it's reasonable to consider the solar neutrino flux as being essentially constant. Especially when carbon dating is only useful over timespans of tens of thousands of years, and the observed error is only about 0.1%.

      --
      If you mod me Overrated, you are admitting that you have no penis.
    4. Re:Seriously : No by Vellmont · · Score: 2, Insightful


      Suppose the sun drifted into some cloud of dark matter a billion years ago and that messed things up?

      You can suppose a lot of things if you're ignorant enough and try hard. We don't even know if this phenomenon is real, much less if it's caused by neutrinos. Where you got "dark matter" involved I don't really understand. (We also don't really know what dark matter even is).

      A few hundred years ago you could have convinced a scientist that you could manipulate gravity (with hidden electromagnets).

      Maybe a really dumb scientist. Charlans existed a few hundred years ago, and so did magnets.

      There could be all kinds of fields at work in the universise that haven't been apparent to us simply because they're flat on the scale that we've experienced them.

      That's certainly possible. Supposing they exist before you have any real evidence for them isn't science though. Going down the road of unobserved forces leads to stuff like epicycles (which does work if you believe in unobserved forces). You're right that we likely don't understand everything in physics. You're wrong that we should start speculating in ignorance about what those things might be. Science works best at filling in the gaps of knowledge, not supposing gaps that we don't even know are there.

      --
      AccountKiller
    5. Re:Seriously : No by Twillerror · · Score: 1

      I'm a little late to this conversation, but I think we are thinking about carbon dating incorrectly.

      Carbon is not decaying by itself. I thought carbon dating had more to do with particles colliding with carbon atoms producing a different atomic weight. This was a fairly rare event and so you could estimate the amount of time based on how common the collisions where.

      Now I always thought that carbon dating wasn't perfect and that you should back it up with other evidence anyways.

    6. Re:Seriously : No by Anonymous Coward · · Score: 0

      Hmm, why do people like Nikola Tesla, Viktor Schauberger, Bruce Cathie, Ed Leedskalnin, Thomas Townsend Brown, Tom Valone, Tom Bearden, Mr. Petkov, Bernard Haisch (and many other people who's name I cannot recall this very moment) come to mind...??

    7. Re:Seriously : No by Teancum · · Score: 1

      This is indeed one of the presumptions of the "global warming" crowd, that the solar flux (aka the "radiation" including heat, light, and other forms) from the sun is constant over human lifetimes.

      By far and away most stars that can be observed have some sort of variation over time, and I don't believe Sol to be the exception here either. Indeed, the thermal mass of the Sun's mid-layers between the core and the "surface" would seem to be a moderating influence to variations in nuclear reactions, and even a modest oscillation in the density of the solar core could have some profound variations in nuclear reaction rates.

      As for historical records of solar activity, there are records of sunspots going back hundreds of years, and there have indeed been periods of nearly zero sunspots at all.... with a correlation between this sunspot minimum and global temperatures. For some hard data including information that is fairly current, you can see the raw numbers at:

      http://www.ngdc.noaa.gov/stp/SOLAR/SSN/ssn.html

      Since neutrino detection is something rather new to science, there really aren't direct historical records to compare this sort of information to what may or may not be happening in the past. "We don't know" is a better answer than trying to take a shot in the dark about what may or may not be the case in terms of what is happening inside of the Sun.

    8. Re:Seriously : No by Free+the+Cowards · · Score: 1

      Sorry, but I'm not going to say "We don't know" when that most certainly is not the case. Solar neutrinos are not some magical mystery. Solar neutrinos are a direct product of the fusion reaction which drives the Sun. Four protons fuse to produce one helium nucleus, two positrons, two neutrinos, and excess energy. Everything we know about stars indicates that these fusion reactions continue constantly and at essentially the same rate. While it's true that some stars have variable output, nothing that is known about the Sun indicates that its rate of fusion reactions has varied at anything close to the amount needed to influence carbon dating processes in any significant manner.

      Now, could there be things happening beyond known science? Sure. But that's a far cry from "we don't know". It's possible that the science may be wrong on this, but if that's what you're trying to claim, come out and say it straight.

      --
      If you mod me Overrated, you are admitting that you have no penis.
    9. Re:Seriously : No by Teancum · · Score: 1

      I didn't say that we don't know that neutrinos are produced in nuclear reactions. I'm just saying that we don't have 18th Century data about neutrino measurements that can confirm the long term cycles that can indicate increases or decreases in the rate of fusion. Heck, we don't even have realistic data for more than a decade or so, and even that isn't with a high degree of confidence or methodology to determine accurately what the rate of fusion is within the solar core. Basic theories about what the neutrino measurements describe have been debated even quite recently.

      And what is known, from carbon dating of wood and other samples that can be dated through alternative (even historical documentation considered accurate) measurements, is that C-14 ratios do vary by quite a bit and in a significant manner over the course of several centuries and sometimes even from year to year. How much of that is influenced by solar radiation and how much is due to extra-solar influences (aka "cosmic radiation") can be debated, but it does happen. And that happens certainly more than the +/- 0.1% difference described in this paper. In fact, variation in solar radiation may be an overwhelming factor with this variance in radioactive decay being just a minor variable swamped out by the other variance.

    10. Re:Seriously : No by Free+the+Cowards · · Score: 1

      My point is that we don't need historical neutrino data to know that the solar neutrino flux has remained essentially constant for the entire carbon dating horizon.

      And your discussion about how carbon dating has many larger sources of error is exactly what I'm saying. There's little point in wringing hands over the potential error introduced by a speculative phenomenon which would have a miniscule effect even if it does exist when the whole thing gives only a coarse measurement anyway.

      --
      If you mod me Overrated, you are admitting that you have no penis.
    11. Re:Seriously : No by Teancum · · Score: 1

      I didn't say that carbon dating has many sources of error. What I'm saying is that measurements of known, independently dated materials abundantly demonstrate that a strict measurement of C-14/C-12 ratios are insufficient for dating of materials, and that something, somewhere, is influencing a change in that ratio.

      Indeed, solar radiation (including but not limited to neutrino flux) has been varying over a period of years and decades to even centuries. It can even vary from month to month. I am simply rejecting your premise that the sun is a constant source of radiation of any kind, including neutrinos, and I'm trying to back that up with some hard data.

      There is no way that you can know for certain that neutrino flux has remained constant over the period of about the last 40,000 years (the "carbon dating horizon"), and my assertion is that it has not, certainly over that period of time.

    12. Re:Seriously : No by Free+the+Cowards · · Score: 1

      Indeed, solar radiation (including but not limited to neutrino flux) has been varying over a period of years and decades to even centuries. It can even vary from month to month. I am simply rejecting your premise that the sun is a constant source of radiation of any kind, including neutrinos, and I'm trying to back that up with some hard data.

      Well let's define our terms, here. I'm using "constant" to mean that the Sun's neutrino flux is unchanged to within, say, 5% of the average. In reality this number is vastly higher than the actual amount of variation.

      There is no way that you can know for certain that neutrino flux has remained constant over the period of about the last 40,000 years (the "carbon dating horizon"), and my assertion is that it has not, certainly over that period of time.

      Absolutely constant? Sure, it hasn't. "Constant", to a degree where other sources of error (like changing cosmic ray flux and changes in Earth's carbon dioxide transport) totally swamp it out.

      You seem to think of carbon dating as being much more simplistic than it actually is. Carbon dating does not simply assume a certain ratio of carbon 14, then calculate based on the exponential decay due to that element's half life. The starting ratio of atmospheric carbon has varied significantly over the period which carbon dating is useful for. This means that any use of carbon dating must first be calibrated using using a sample whose age can be determined through other means. Even if the solar neutrino flux varied enough to cause a significant change in the decay rate of carbon 14, that change would have already been taken into account during the calibration process. The estimate of the ratio of atmospheric carbon isotopes would be affected, but this error would cancel out when used for actually determining the ages of things.

      The physics of solar neutrino production simply isn't that complicated. You pile an unimaginably large amount of hydrogen together. Self gravitation causes it to collapse in on itself, and the high temperatures and pressures cause fusion to occur. There are a lot of subtleties with magnetic fields and such, but the overall changes in output are very small, and a lot of those changes are in how fast the reaction energy is emitted, not how fast it's produced. (There is an enormous time lag between when energy is produced at the core of the Sun and when it shows up through your window, roughly 50 million years. This delay only applies to photons, however, not neutrinos, which escape from the core fusion reaction directly into space.)

      So to sum up. This effect, first of all, is hypothetical. If it does exist, the idea of it being due to neutrino flux is also hypothetical. If it is due to neutrino flux, the effect is extremely small. The annual variation of about 7% neutrino flux would produce a change in decay rate of well under 1% according to the data that they've collated. There is no known physical mechanism which would produce anything near that kind of change in the long-term neutrino flux from the Sun over the period of time that carbon dating covers. This extremely small effect would be totally swamped out by much larger effects, such as changes in the rate of carbon 14 production and changes in the absorbption and release of carbon by the Earth. And this effect, even if it exists, even if it's caused by neutrinos, even if the Sun's neutrino output varied much more than is known, even if the extremely small effect on radioactive decay produced enough variation to influence the carbon ratio in samples of old organic material, would still be compensated for by the calibration procedures used in carbon dating.

      --
      If you mod me Overrated, you are admitting that you have no penis.
  19. Guess I'll need even less nuclear fuel... by mdm-adph · · Score: 3, Funny

    ...stored on the interstellar star voyager I'm building, then.

    Should be able to pack a few more women on-board that way.

    --
    It is by my will alone my thoughts acquire motion; it is by the juice of the coffee bean that the thoughts acquire speed
    1. Re:Guess I'll need even less nuclear fuel... by Digital+Vomit · · Score: 2, Funny

      The one time I have mod points and there's no +1 Giggitty option. :-(

      --
      Modern copyright is theft of culture from everyone and it retards the progress of the useful arts and sciences.
    2. Re:Guess I'll need even less nuclear fuel... by Anonymous Coward · · Score: 0

      Wow, that was a stupid post.

  20. Applications... by geogob · · Score: 1

    Would be interesting to see if this can be reproduced artificially. Maybe it could lead to new ways of dealing with nuclear waste, by accelerating its decay rate. On the other hand, the effect seem to be so small that, even if artificially amplifying it, it would be of little use.

    We're still very far from that point, but it opens up interesting new perspectives.

  21. Ntew Year binge to blame by manojen · · Score: 1

    Nobody mentions a very stark correlation evident from the figure. The peak always occurs around the New Years, everybody is having a gala time, the experimenters, the earth, the sun, neutrinos, why should alpha (fine structure constant) be left behind? Folks, believe me, its the celebrations that's to be blamed!

  22. Fundamental constant by culu · · Score: 3, Funny

    First, some theorists think the sun produces a field that changes the value of the fine structure constant on Earth as its distance from the sun varies.

    If this is true, we get some fundamental variables besides $_, @_, etc.

    1. Re:Fundamental constant by orkysoft · · Score: 1
      --

      I suffer from attention surplus disorder.
  23. Cesium decay by mcvos · · Score: 3, Insightful

    I'm more worried about the effect on Cesium decay. Did we accidentally base our definition of time on a variable rather than a constant?

    1. Re:Cesium decay by mlwmohawk · · Score: 3, Funny

      An old programming axiom now looks more true than ever:

      "Variables don't and constants aren't"

    2. Re:Cesium decay by Bemopolis · · Score: 1

      No. Cesium clocks do not keep time from the decay of the nucleus; they keep time by measuring the resonance frequency of one of its orbiting electrons.

      --
      "I guess the moral of the story is, don't paint your airship with rocket fuel." -- Addison Bain
    3. Re:Cesium decay by T.E.D. · · Score: 1

      An old programming axiom now looks more true than ever:

      "Variables don't and constants aren't"

      Not to mention the old proverb:

      A man with a watch knows what time it is. A man with two watches is not sure.

  24. Dark matter epicycles! by Anonymous Coward · · Score: 0

    Maybe it's the perfectly spherical shell of dark matter which supposedly surrounds our galaxy, or maybe it's the invisible epicycles of the sun, or maybe it's Al Gore's cologne.

    Couldn't possibly be our understanding of gravity, or even electromagnetic waves, is imperfect.

  25. This year's flying by by da007 · · Score: 1

    The obvious solution is that time speeds up when we get closer to the sun due to the higher gravatational field. This would explain why the days seem to drag by right before Christmas. We're further away which also makes everything colder. *

    * Time slowing down at Christmas is realative to how far along you are on your shopping list.

    1. Re:This year's flying by by Count_Froggy · · Score: 2, Informative

      Only if you live in the Southern Hemisphere...

      The Earth is actually closer to the Sun during the Northern Hemisphere Winter.

      --
      If I am not for myself, then who will be for me? If I am only for myself, what am I? If not now, when?
    2. Re:This year's flying by by Flyers2391 · · Score: 0

      Which gives a whole new meaning to "Nuclear Winter"

    3. Re:This year's flying by by da007 · · Score: 1

      It was a pre-coffee joke. That's why it's not funny.

  26. my pick by mapkinase · · Score: 2, Insightful

    I use my own Occam's blade to cut off the first one and pick the second one.

    --
    I do not believe in karma. "Funny"=-6. Do good and forbid evil. Yours, Oft-Offtopic Flamebaiting Troll.
  27. Carbon Dating? Electromagnetism by Anonymous Coward · · Score: 0

    The always 'trustworthy' wikipedia tells me that the fine structure constant is what determines how strongly electromagnetism affects matter. If it were true that proximity to the sun alters that, it seems to me it could have major implications, for, say, a bunch of computer geeks.

  28. Crazy Physicists... by siwelwerd · · Score: 1

    that changes the value of the fine structure constant

    I do not think that word means what you think it means...

  29. But the data is awful by Geoffrey.landis · · Score: 4, Insightful
    But... look at the data. That correlation is *terrible*. The phase is off.

    Also, note that since the perihelion is right around Jan 1, only about eleven days after solstace-- this data equally well correlates with season.

    --
    http://www.geoffreylandis.com
    1. Re:But the data is awful by complete+loony · · Score: 1

      Ambient temperature in the lab?

      --
      09F91102 no, 455FE104 nope, F190A1E8 uh-uh, 7A5F8A09 that's not it, C87294CE no. Ah! 452F6E403CDF10714E41DFAA257D313F.
    2. Re:But the data is awful by jpflip · · Score: 1

      I wouldn't say that the correlation is that bad, actually. It just looks bad the way they plotted it, with no error bars on the red sine wave. If you add the given error bar to that sine wave and imagine wiggling the data around correspondingly, the combined fit probably wouldn't be that bad.

    3. Re:But the data is awful by Anonymous Coward · · Score: 2, Informative

      Actually, the correlation is not terrible at all. It's clearly visible at sight, and the authors say "The Pearson correlation coefficient,r, between the raw BNL data and 1/R^2 is r=0.52 for N=239 data points, which translates to a formal probability of 6E-18 that this correlation would arise from two data sets which were uncorrelated"
      That seems pretty low to me.

      And about the phase: An out-of-phase correlation is a correlation, it's just out of phase. That means there's some time delay that should be explained by the model. In fact, the authors dedicate a hole paragraph (and another paper) to try to explain it.

      Finally, the season is discarded as a cause since thay analyze data from two experiments in different hemispheres, and they are correlated in phase.

    4. Re:But the data is awful by Anonymous Coward · · Score: 0

      But... look at the data. That correlation is *terrible*. The phase is off.

      Also, note that since the perihelion is right around Jan 1, only about eleven days after solstace-- this data equally well correlates with season.

      It seems like it's affected by the angle of incident solar radiation.

    5. Re:But the data is awful by gardyloo · · Score: 1

      It just looks bad the way they plotted it, with no error bars on the red sine wave.

            Er... and what error bars should they put on the 1/(Earth-Sol)^2 distance curve?

    6. Re:But the data is awful by Andy_R · · Score: 1

      If that red line is accurate, then the graph looks less like an out of phase correlation with earth sun/distance, and more like an in phase correlation with earth/sun relative velocity.

      --
      A pizza of radius z and thickness a has a volume of pi z z a
    7. Re:But the data is awful by avandesande · · Score: 2, Insightful

      We don't know that the neutrino flux is constant. Neutrinos are notoriously hard to detect and measure.

      --
      love is just extroverted narcissism
    8. Re:But the data is awful by QuoteMstr · · Score: 1

      Nice observation!

    9. Re:But the data is awful by bcrowell · · Score: 2, Informative

      But... look at the data. That correlation is *terrible*. The phase is off.

      IMO you're focusing on the wrong thing. If you believe their error bars, and believe that there are no systematic errors that correlate with time of year, then the probability that a correlation this strong would occur is quoted by them at 6*10^-18. On any plot like this, the human eye is a lousy judge of statistical quality. The statistical quality comes from the aggregate of all the data. You could have a plot like this with a thousand data points where a ruler line went through 2/3 of the error bars, and it could still be statistically inconsistent with zero modulation to an astronomical level of confidence.

      The real weakness in this work is not in the statistical quality of the data, it's that it makes extraordinary claims, and extraordinay claims require extraordinary proof, but there are several obvious things that they should have done, and didn't:

      1. They should have shown that the results were reproducible.
      2. They should have shown that the results were reproducible under a variety of conditions that might have led to a bogus yearly modulation. For instance, they should have tried it in both the northern and the southern hemisphere, and they should have tried it in a temperature-controlled environment, with the temperature intentionally modulated with different phases.
      3. They should have shown that the results occurred with qualitatively different types of detectors. For instance, they could use an isotope that emits both gammas and betas, and show that the same effect occurs both in an HPGe gamma-ray detector and in a silicon beta detector.
      4. Although the statistical confidence level of the correlation is good, it's completely bogus that they didn't make any effort to improve the statistics so that the effect could be seen more clearly. If nuclear decay rates really depend on distance from the sun, then there's no way it's just going to be an effect that applies to some nuclei and not others. They have data from 32Si, which is an exotic isotope whose half-life is technically difficult to measure. Based on this extremely technically difficult measurement, they deduce an effect at the 10^-3 level. Well, with an isotope that's easier to produce, they could easily get their random errors down by several orders of magnitude; with a count rate of 1 kHz in each detector out of an array of 100, counting for 3 months, you'd have Poisson statistics of 10^-6. The error bars on the plot would then be too small to see. Basing the strongest possible claims on a design leading to the crappiest possible statistics is one of the hallmarks of junk science.
    10. Re:But the data is awful by Anonymous Coward · · Score: 0

      Ding bling spreadsheet. I didn't line up the starting x and y rows in that graph

    11. Re:But the data is awful by Anonymous Coward · · Score: 0

      Air Conditioning

    12. Re:But the data is awful by Anonymous Coward · · Score: 0

      Sir, you are an excellent slashdotter. Meaning of course that you did not read the article. Apparently you like slashdot because of the pictures, not because of the articles.

      BNL and PTB are at different latitudes and have different climates. No difference in decay rates due to ambient factors has ever been observed, except for beta decay in the presence of strong EM fields. (And one other factor, which I'll not take the time to look up for you.) There is a very nice paragraph at the end of page 3 and top of page 4 in TFA discussing several possible causes of the phase shift.

      I congratulate you on continuing the great slashdot tradition of not reading TFA. Thank you.

    13. Re:But the data is awful by Anonymous Coward · · Score: 0

      Is it? What is the chi-squared? Did you run the numbers, or did you just say "hey, gosh, that looks like bad data!". In my field we work with much worse - and produce excellent statistics. This is nuclear physics, and with that standard in mind, thats actually very good data. For reference, the error bar for the entire set can be found near the bottom of the graph.

      Personally, I wonder how they shielded the devices. There is a very reasonable standard of an increase in background radiation with the seasons.

    14. Re:But the data is awful by Anonymous Coward · · Score: 0

      A different phase does not poor correlation make. Looks to me like the correlation is superb. Related? maybe, maybe not, but perfectly well correlated.

    15. Re:But the data is awful by Anonymous Coward · · Score: 0

      Small nitpick - your subject should read "the data are awful".

      'Data' is the plural of 'datum'.

    16. Re:But the data is awful by silverpig · · Score: 1

      [neo]whoa[/neo] It could therefore be a relativistic effect?

    17. Re:But the data is awful by jpflip · · Score: 1

      I stand corrected - I misunderstood the plot initially.

  30. Radioactive waste by IceCreamGuy · · Score: 3, Interesting

    So could this possibly lead to a way to "drain" radioactive waste by exposing it to a high neutrino flux? Or is it the other way around... does a higher flux slow it down and we're already near the limit of the highest speed of decay?

    1. Re:Radioactive waste by Cloud+K · · Score: 1

      I was just wondering this. I look forward to hearing about a "Neutrino Flux Emitter" outside of Star Trek / Elite.

  31. Yup. That seems straigthforward enough. by Anonymous Coward · · Score: 0

    Perhaps some heretofore undetected/unconsidered form of solar radiation is affecting the decay rates.

    Most of the time, the differences are minimal, so we consider them to be constant. Very few parameters in the universe are truly constants.

  32. openings for little known facts by BitterAndDrunk · · Score: 5, Funny

    Are the reasons your extensive diamond knowledge will never come in handy.

    --
    You better watch out, there may be dogs about . . .
  33. Since it may happen inside a field by bytesex · · Score: 1

    Wouldn't you expect different decay rates on the poles and the equator ?

    --
    Religion is what happens when nature strikes and groupthink goes wrong.
    1. Re:Since it may happen inside a field by ceoyoyo · · Score: 1

      Not if the field originates from the sun.

  34. Careful with the conclusions by archeopterix · · Score: 1

    Hey, correlation is not causation. It might be that the variations in the decay pull and push the Earth closer and farther from the sun.

  35. it would explain a lot by BitterAndDrunk · · Score: 2, Funny

    It would certainly explain why time seems to move slower whenever I'm talking to certain coworkers.

    --
    You better watch out, there may be dogs about . . .
  36. The environment varies the experimenters... by KasperMeerts · · Score: 1

    ...but not the subject of the experiment.

    I read for example about a planet orbiting a pulsar whose orbital period was half of Earth's. Turns out it was a misconfiguration involving the Doppler effect.

    I'll need more evidence than this horrible correlation. Something involving deep space probes would be better. But if it turns out to be true, then this is HUGE!

    --
    As long as there are slaughterhouses, there will be battlefields.
  37. according to lamarckism by circletimessquare · · Score: 1

    your children won't need the fixes your phrenologist makes to your skull

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
  38. Short answer: no by Moraelin · · Score: 4, Informative

    Short answer: no.

    Longer answer: nope.

    Even longer answer:

    1. Carbon isn't one of the isotopes that are affected by this.

    2. The fluctuations have a period of about year, so they average out when you measure something over millenia.

    3. The fluctuations are very very tiny, waay below one percent even. So basically even if you happened to take one extreme as your value, and in reality it was the opposite extreme, and even with "compound interest" so to speak... worst that could happen is that a 100,000 year old bone turns out to be "only" a bit over 99,000 year old. The creationists still aren't going to like it.

    4. The variability in C14 production and distribution are much bigger than this fluctuation, and we learned to deal with those perfectly well. (C14 is constantly produced as neutrons from solar radiation knock off and replace a proton from an N14 atom, turning it into a C14 atom.)

    5. The way we deal with those is by calibrating that dating. There's stuff that we already know when it happened, by other means (chronicles, geologic events, etc), and we can see how much C14 is left in stuff from that year. That lets you calibrate your C14 dating pretty damn well.

    The last one also tells you why actually #2 is the only one that matters: we already calibrated for long intervals, and such fluctuations were already averaged into the calibration. This new discovery won't affect C14 dating at all. The effect is exactly zero. Null. Nada. Nix.

    Of course, that won't stop young-Earth creationists from coming out of the woodwork, and waving yet another thing they don't understand as "proof" that science is wrong and their bible is the literal history of Earth. What else is new? No, seriously.

    I figure everyone and everything has their place and role, though. The young-earth creationists' is simply to make everyone else look smart. It's a tough job, but someone has to do it ;)

    --
    A polar bear is a cartesian bear after a coordinate transform.
    1. Re:Short answer: no by Anonymous Coward · · Score: 0

      You're right. Half of these people still offer arguments such as the "thickness of Moon dust", "salt in the oceans", and a host of other bogus arguments that were invalidated in the 1960s and 1970s. The other half offer newer arguments that "prove" the "young Earth" but that are equally bogus.

      There is no straw too small that these people will not grasp at it in order to deny what has been evident to religious and non-religious scientists studying the age of the Earth since the early 1800s: it's really old.

      People can and should believe what they want, but there hasn't been a scientifically legitimate alternative to an "old Earth" interpretation since the 1700s. Even if radiometric dating were completely negated (and there's no sign of that from this paper), it wouldn't change all the other evidence that bears on the question and was in place before radiometric dating even existed.

      So, I think this paper is genuinely scientifically interesting, but it will be more interesting to watch the young Earth creationists try to spin a 1% annual cyclic effect that would cancel out over the long term into a process that would somehow result in about 3 orders of magnitude difference in age determinations (~6000 years to ~4.5 billion). That attempt will be fascinating.

    2. Re:Short answer: no by Anonymous Coward · · Score: 0

      Speaking as a religious person myself, I always find it funny when scientists are forced into these "oops, we didn't think of that" moments. They spend all their time asserting conclusions that then turn out to be - if not exactly wrong - not quite there yet.
      While I don't want to be seen as a fundamentalist "science sceptic" (because I'm not), I can't help wondering what else scientists have missed.
      Ah, well. That's why I read science books.

      [Cue another bunch of bible-bashers telling me how ignorant and bigoted I am... oh the irony...]

    3. Re:Short answer: no by Wonko+the+Sane · · Score: 0, Redundant

      That's how science works. All scientific conclusions are subject to change based on new information. (it's called progress)

      Only religion makes claims of absolute truth independent of evidence.

    4. Re:Short answer: no by Anonymous Coward · · Score: 0

      Hehe, prepare yourself for humiliation, and torm
      Little horn

    5. Re:Short answer: no by Anonymous Coward · · Score: 0

      They spend all their time asserting conclusions that then turn out to be - if not exactly wrong - not quite there yet.

      That's actually the nature of scientific theories.

      And religious people make lots of assertions - they just don't have anything to back them with.

  39. Synchronized to r^2, not r by Muad'Dave · · Score: 4, Interesting

    This graph seems to indicate that the correlation is between the decay rate and the radius of Earth's orbit squared, not just r.

    Could it be that the correlation between decay rates is with Earth's orbital velocity, acceleration, or dTheta/dT (rate of change of the Earth/Sun vector due to Earth's elliptical orbit)?

    Additionally, there seems to be a phase shift between peak r^2 and peak decay rates with the decay rate peak seemingly correlated with our peak acceleration toward the sun.

    --
    Tiller's Rule: Never use a word in written form that you've only heard and never read. You will end up looking foolish.
    1. Re:Synchronized to r^2, not r by blueg3 · · Score: 2, Insightful

      It seems more likely that an r^2 variation indicates that it's a field-like effect, which drops off as 1/r^2 (e.g., neutrino flux).

    2. Re:Synchronized to r^2, not r by Muad'Dave · · Score: 1

      That's one manifestation that changes with r^2, but there are other things that could cause this without being field-like.

      --
      Tiller's Rule: Never use a word in written form that you've only heard and never read. You will end up looking foolish.
    3. Re:Synchronized to r^2, not r by blueg3 · · Score: 1

      Everything described as an "inverse-square" law is field-like, but there are certainly other ways that r^2 variation is possible.

  40. "The Gods Themselves" by xonar · · Score: 3, Interesting

    This reminds me of Asimov's book "The Gods Themselves" where the exchange of electrons between parallel universes, creating limitless and wasteless energy, increases the strength of the nuclear force in our universe. Thus making our huge sun (by parallel universe standards) likely to explode/implode.

    1. Re:"The Gods Themselves" by Anonymous Coward · · Score: 0

      You do know that is a fictional book, right?

  41. Subject to change are all things..... by cuteface · · Score: 1

    so said the Buddha. So is the Planck constant really constant as well? Would it be reasonable to believe that its value actually varies at different time of the universe? Just shooting off my head. ;-)

    --
    Reality is what we taste, smell, see, hear and touch yet we cannot comprehend it...only approximate it.
  42. Engineering Ramifications? by Zenaku · · Score: 4, Interesting

    This is a good example of how many holes there might be in our theories about the universe. We have been making measurements for a few 1000 years in one solar system (mostly just on one planet) and things that we don't see changing, like radioactive decay rates, we consider constant. It's exciting to think how much more there may still be to discover.

    This makes me wonder about the http://en.wikipedia.org/wiki/Radioisotope_thermoelectric_generatorpower sources on board the Voyager spacecraft, as they are based on the decay of radioactive material. Has our earth-centric understanding of the universe led us to build probes designed to push the boundaries of the solar system and continue into interstellar space, that will gradually lose power the further they get from the sun?

    Whoops.

    --
    If fate makes you a motorcycle, you become a motorcycle.
    1. Re:Engineering Ramifications? by Gerzel · · Score: 2, Insightful

      Eh if so, then we'll just have to fix that with the next generation of probes. That's science for you.

      Learning comes more often from misses than hits as misses are far more common.

    2. Re:Engineering Ramifications? by Gewalt · · Score: 1

      It's a good thing our "learning switch" is set to the on position.

      --
      Modding Trolls +1 inciteful since 1999
    3. Re:Engineering Ramifications? by N!k0N · · Score: 1
      nah, it'll just come back to earth some day in the future and call itself V'ger.

      I for one welcome our spacecraft overlords...

    4. Re:Engineering Ramifications? by LWATCDR · · Score: 2, Interesting

      Note really because it is on the order of .1%
      So if the power supply was going to last say 1000 years it would now only last 999. Most engineers would use a safety factor as small as .1%.
      Those that do will soon find themselves unemployed.

      --
      See my blog http://ilovecookes.blogspot.com/ for light hearted technical information.
    5. Re:Engineering Ramifications? by Zenaku · · Score: 4, Insightful

      If I understood correctly, the variance in decay rate between Earth's aphelion and perihelion is .1%. Earth's distance from the sun doesn't change by that much in astronomical terms. If we see a .1% variation over that relatively small distance, how different would the rate be at 100AU, or half-way to the nearest star? How do we know that radioactive isotopes decay at all if you get them far enough away from a star?

      It's also not simply a matter of how long the power supply will last. Those generators work by converting the heat from each decay event into electricity, and if the rate of decay is less than it should be, then it will not produce continuous power.

      I'm not saying that it's definitely a problem, I just think this raises interesting questions.

      --
      If fate makes you a motorcycle, you become a motorcycle.
    6. Re:Engineering Ramifications? by jschen · · Score: 5, Insightful

      The Voyagers was the first thing that came to my mind, too. If the rate of radioactive decay is dependent on neutrino flux from the sun, then shouldn't their RTGs have long since gone dead as the rate of decay slowed (due to increasing distance), rather than maintaining better performance than originally anticipated (due to better performance of the thermocouple than anticipated)? (NASA link) Given that both spacecraft are alive and well out past the heliosphere, I think we can safely conclude that the rate of decay of the plutonium onboard is not meaningfully influenced by solar neutrino flux.

    7. Re:Engineering Ramifications? by TheThiefMaster · · Score: 1

      Is there a variation in the Earth's average temperature over the same time that happens to be in sync? I would think the earth would also get slightly warmer and cooler as it moved towards and away from the sun. Does temperature affect radioactive decay rate?
      It doesn't need to be as complex as neutron flux.

    8. Re:Engineering Ramifications? by TheThiefMaster · · Score: 1

      *neutrino flux

    9. Re:Engineering Ramifications? by dotancohen · · Score: 2

      Is there a variation in the Earth's average temperature over the same time that happens to be in sync?

      Not in any one place. The Earth has enough heat sinks to prevent these small differences from making a difference.

      That said, _seasonal_ temperature differences may in fact change the rate of nuclear decay. As chemical reactions are generally very dependent upon temperature, I am surprised that I have never heard of the possibility of nuclear decay being dependent as well having ever been studied.

      --
      It is dangerous to be right when the government is wrong.
    10. Re:Engineering Ramifications? by Yvanhoe · · Score: 4, Insightful

      Could this explain Pioneer acceleration anomaly ?

      --
      The Wise adapts himself to the world. The Fool adapts the world to himself. Therefore, all progress depends on the Fool.
    11. Re:Engineering Ramifications? by ultranova · · Score: 1

      If we see a .1% variation over that relatively small distance, how different would the rate be at 100AU, or half-way to the nearest star? How do we know that radioactive isotopes decay at all if you get them far enough away from a star?

      Maybe we should include a fusion reactor in these probes, to ensure that the isotopes keep decaying in the primary power source ?-)

      Coming to think of it: could you use a fusor to "burn" radioactive waste into harmless slug and generate electricity simultaneously ? Could you use a fusor to burn even unenriched uranium in a plant ? As unenriched uranium is not significantly radioactive, this could open doors for small-scale nuclear power. Nuclear-power cars, anyone ?

      --

      Forget magic. Any technology distinguishable from divine power is insufficiently advanced.

    12. Re:Engineering Ramifications? by Wonko+the+Sane · · Score: 3, Informative

      I think you got it backwards. They think that neutrino flux slows down radioactive decay. As probe gets farther away from the sun, then it will decay faster.

    13. Re:Engineering Ramifications? by geobeck · · Score: 1

      This makes me wonder about the power sources on board the Voyager spacecraft, as they are based on the decay of radioactive material. Has our earth-centric understanding of the universe led us to build probes designed to push the boundaries of the solar system and continue into interstellar space, that will gradually lose power the further they get from the sun?

      No. More likely they will encounter a spatial anomaly that will greatly magnify their power, allow them to achieve self-awareness, and return to Earth in a couple of centuries searching for their creator.

      --
      Find environmentally and socially responsible products on http://buy-right.net
    14. Re:Engineering Ramifications? by pragma_x · · Score: 1

      That's an interesting idea.

      I'm no chemist, or physicist, but is it possible that there's some kind of sub-atomic interaction when atoms come to share electron shells.

      Perhaps the nucleus gets bounced around every time electrons change energy levels or shells become populated/depopulated due to the change in atomic charge. That would mean that ionizing unstable isotopes would simply "shake them down" and trigger more spontaneous fissions than normal.

      As for temperature, it may be a function of the same phenomenon.

    15. Re:Engineering Ramifications? by somersault · · Score: 2, Funny

      In the interests of learning, I propose we switch it off to see what happens.

      --
      which is totally what she said
    16. Re:Engineering Ramifications? by AliasMarlowe · · Score: 5, Informative

      If I understood correctly, the variance in decay rate between Earth's aphelion and perihelion is .1%. Earth's distance from the sun doesn't change by that much in astronomical terms...

      But Earth's distance from the sun does change by more than 0.1% during its orbit:
      Aphelion distance = 152.1 million km
      Perihelion distance = 147.3 million km
      So aphelion distance from the center of the sun is 3.2% greater than perihelion distance. Alternatively, both aphelion and perihelion differ from their mean by 1.6%.

      --
      Those who can make you believe absurdities can make you commit atrocities. - Voltaire
    17. Re:Engineering Ramifications? by Zenaku · · Score: 3, Interesting

      If the rate of decay increases with distance from the sun, that would explain the accelleration -- faster decay means more heat being turned into power. The probes could be accelleration because they are overpowered.

      It would also explain the better than expected performance of the thermocouple -- it only looks more efficient than it should be because we are starting off with more input heat than we think we are.

      All of this is speculation, of course. I'm no physicist, and it's way to early to know what this discovery means.

      --
      If fate makes you a motorcycle, you become a motorcycle.
    18. Re:Engineering Ramifications? by Zenaku · · Score: 3, Interesting

      What gives you the idea that the percentage change in distance has to equal the percentage change in decay rate? I would expect them to be related in an exponential or logarythmic way, but even if they were related linearly, that wouldn't mean that a 3.2 change in distance should mean a 3.2 change in decay rate.

      What if the decay rate increases by .1 percent for every 4.8 million km? What if it increases by the square of the distance times some constant?

      What you've pointed out here is kind of meaningless.

      --
      If fate makes you a motorcycle, you become a motorcycle.
    19. Re:Engineering Ramifications? by Anonymous Coward · · Score: 0

      Is there a variation in the Earth's average temperature over the same time that happens to be in sync? I would think the earth would also get slightly warmer and cooler as it moved towards and away from the sun. Does temperature affect radioactive decay rate?
      It doesn't need to be as complex as neutron flux.

      No. It's impossible for nature to alter the Earth's temperature. Only humans with cars in Boston and factories in Beijing can melt the ice caps in the Arctic, shrink coastlines in the Atlantic, and bring drought to farms from Kansas to Kenya.

    20. Re:Engineering Ramifications? by bmwm3nut · · Score: 2, Informative

      I am a chemist (and physicist). There may be something that could be attributed to "bouncing" nuclei with electrons (I doubt it, but I'm not going to rule it out); however, the scale of that would be much smaller than what's being reported here. In the lightest atom (Hydrogen) the nucleus is about 1,800 times heaver than an electron. So any effect of temperature or anything that would cause the electrons to interact with the nucleus is going to be damped by a factor of 1,800. Now, when we get to the radioactive elements, their weights are on the order of 100 times heaver than Hydrogen, so any electron-nucleus effect will be down by a factor of at least 180,000 which is way smaller than the effect reported in TFA.

    21. Re:Engineering Ramifications? by dpilot · · Score: 4, Interesting

      Sorry, doesn't wash. The probes are not in powered flight, they're simple ballistic projectiles. No ion engines at work, which might show the effects you suggest.

      It would clearly be interesting to construct a probe to test this effect using a greater distance that the difference between the Earth's perihelion and apihelion

      --
      The living have better things to do than to continue hating the dead.
    22. Re:Engineering Ramifications? by ceoyoyo · · Score: 1

      The power will still be continuous unless it REALLY slows down, in which case it wouldn't matter.

      There are a LOT of decay events happening. A little slow down leaves you with a LOT of decay events minus a few.

    23. Re:Engineering Ramifications? by Zenaku · · Score: 1

      Ah, right you are.

      --
      If fate makes you a motorcycle, you become a motorcycle.
    24. Re:Engineering Ramifications? by ceoyoyo · · Score: 1

      The probes aren't under power. Extra energy from the RTG wouldn't make them go faster unless it was somehow causing them to vent something (like coolant), in which case they wouldn't be likely to keep working very long.

    25. Re:Engineering Ramifications? by PhreakOfTime · · Score: 1

      Actually, there is a variation.

      While the earth is closer to the sun in January, this is summer in the southern hemisphere. However, there is less land mass in the southern hemisphere than there is in the northern. When the Earth is farthest away, in July, this is summer in the northern hemisphere. Because of the differences in albiedo between land and water, this actually results in the northern hemisphere being warmer during its summer months than the southern hemisphere.

      Long story short, land heats up faster than water.

    26. Re:Engineering Ramifications? by LWATCDR · · Score: 1

      "It's also not simply a matter of how long the power supply will last. Those generators work by converting the heat from each decay event into electricity, and if the rate of decay is less than it should be, then it will not produce continuous power."

      Yes it kind of is.
      You have to have a lot of decays to make heat. SNAPs stop working when there are not enough decays to produce enough heat to make power.
      But I can promise you that most snaps probably have a safety factor of around 100%. This effect should never be a problem for any space probe.

      --
      See my blog http://ilovecookes.blogspot.com/ for light hearted technical information.
    27. Re:Engineering Ramifications? by QuoteMstr · · Score: 2, Informative

      RTGs run down because the thermocouples go bad, not because the plutonium cools off.

    28. Re:Engineering Ramifications? by gumbi+west · · Score: 1

      IWARP (I was a radiation physicist) and temperature has been convincingly ruled out for changing decay rates. It is a very interesting case for chemists because it is one of the only non-temperature dependent reactions known.

    29. Re:Engineering Ramifications? by OriginalArlen · · Score: 1

      Duh. RTGs generate steadily less and less power due to the radioactive decay which provides the energy used by the spacecraft. The Voyagers were NOT "designed to push the boundaries of the solar system and continue into interstellar space". They were designed for a ten-year Grand Tour series of gas-giant fly-bys. The post-Neptune science results have been a happy bonus resulting from the fantastic quality of JPL and contractor engineering.

      --

      Everything I needed to know about life, I learnt from Blake's Seven
    30. Re:Engineering Ramifications? by OriginalArlen · · Score: 2, Informative

      How do we know that radioactive isotopes decay at all if you get them far enough away from a star?

      Well, we're going to need a new theory of stellar processes if so, which is going to mean some pretty spectacular changes to astronomy. Also, the Voyager (and Mariner, and other) RTGs are decaying at the rates predicted by the standard model. This fits the definition of an "extraordinary claim" to a t -- anyone with real physics clue on this thread care to comment on the ordinariness or otherwise of the evidence claimed by the pre-print?

      --

      Everything I needed to know about life, I learnt from Blake's Seven
    31. Re:Engineering Ramifications? by notnAP · · Score: 1

      I just tried it. Didn't learn a damn thing until I turned it back on and quickly realized the error in the experiment.
      This mirrors the results I saw the last time I performed this experiment - back in college with the help of substances that have profoundly strong effects on The Learning Switch.

    32. Re:Engineering Ramifications? by bckrispi · · Score: 1

      In the interests of learning, I propose we switch it off to see what happens.

      Some people have already tried that. They're called "Creationists".

      --
      Xenon, where's my money? -Borno
    33. Re:Engineering Ramifications? by vigour · · Score: 3, Interesting
      Actually, the parent is partially correct.
      One of the hypotheses put forward to explain the Pioneer acceleration anomalies include thermal gradients across the craft. According to one group in JPL:

      Turyshevs team calculated the emissions from the Pioneer spacecraft, it found that heat is given off in some directions preferentially, enough to account for 28-36% of the anomalous acceleration.

      Source
      . The mainstream view is that the effect is most likely due to outgassing from the surface, or thermal radiation pressure Ubiquitous Wiki Link. Having said that, I'm not fully convinced by the pre-print. They still need to make sure they have covered more conventional effects, such as ambient temperature effects on detectors. The variation is small, if significant, and I'd rather wait til it gets through peer review (and their hopefully insightful) comments. If their hypothesis is true, then it's certainly very interesting.

    34. Re:Engineering Ramifications? by Lars+T. · · Score: 1

      If I understand this right, the rate of decay will increase with distance from the sun.

      --

      Lars T.

      To the guy who modded me down from perfect to terrible Karma - Apple haters still suck

    35. Re:Engineering Ramifications? by andy_t_roo · · Score: 1

      the "something" which the extra energy is causing them to vent is thermal photons - the energy itself - all it takes to produce thrust is a non-symmetric object (when rotation is taken into account), so that the photonsarn't evenly distributed.

    36. Re:Engineering Ramifications? by ceoyoyo · · Score: 1

      You'd need to "vent" the photons all in one direction, and you'd be talking about a pretty massive number of directional photons, surely something that would have been noticed.

      If the Pioneer anomaly was due to IR coming off the spacecraft unevenly, then increased decay could explain the effect being greater than expected, but the basic anomaly would still be explained by whatever mechanism was making the spacecraft radiate unevenly.

    37. Re:Engineering Ramifications? by marcosdumay · · Score: 1

      Well, temperature may influence it somehow, but not in a direct way. First, nuclear reactions are very different from chemical ones. Fission even happens on single atoms, without interactions, so the main contribution of temperatre does not influence it.

      Also, people have created nuclear reactions on several different temperatures, from liquid helium to the cores of nuclear reactors and nuclear weapon explosions. Up to now, there is no notice of them disagreeing with the theory.

    38. Re:Engineering Ramifications? by silverpig · · Score: 1

      Actually, one of the proposed solutions to the velocity anomalies exhibited by the probes is that they may be radiating their generated heat asymmetrically. One type of radiation pressure engine would be to heat a piece of the spacecraft which points "backwards" and surround it in a reflective cone. The heat generated will largely be radiated "backwards" thus pushing the spacecraft "forwards".

  43. Did you mean "causal relationships"? by pjt33 · · Score: 1

    The discussion of casual relationships is further up the page, in replies to a post about carbon dating.

  44. Duh.. by Anonymous Coward · · Score: 0

    If you don't dry your isotopes out in the sun, of course they won't last long.. I guess it's just another slow news day.

  45. Some under-educated thoughts... by B5_geek · · Score: 1

    Since gravity does not vary _that_ much during the earths voyage around the sun (if it did orbital decay would have solved the whole never-wear white after labour-day problem); lets consider some other alternatives. Use something with a relatively short and predictable half-life. - radiation shielding; take 2 samples of identical density/size. Place one in a lead-lined box, and the other in cardboard. measure both. - use the time-of-day as a measurement, (let the planet 'block' any suspected interference from the sun.) If neither of these eliminate a variable, then we can conclude that it isn't a radiation source that we know of causing the blip. Here is another idea; since many NASA probes/rovers use nuclear-decay power sources, can we not measure the current power output vs the expected output? these probes are much further away from the sun then we are.

    --
    "The price good men pay for indifference to public affairs is to be ruled by evil men." ~Plato (427-347 BC)
  46. Hold on for a moment... by flajann · · Score: 1
    I wouldn't get too excited yet. I would like to see ruled out any false "decays" that may be due to cosmic ray flux differences or the like. We need much more research before we jump to any hasty conclusions.

    Let's be certain we really see a difference that is actually due to the actual isotope decay rate differences. Alas, this is going to have to wait a few more years. :-)

  47. penis anus? by Anonymous Coward · · Score: 1, Funny

    anus penis?

  48. They got it backwards by RoccamOccam · · Score: 1

    The decay rates of silicon-32 and radium-226 are stable - it's the cesium clocks used to measure the effect that are affected. I'm just saying ...

  49. How will this effect atomic clocks? by Viol8 · · Score: 1

    If the decay rate of caesium or whatever element they use in atomic clocks these days is effected by the sun surely this means all timing systems used everywhere on earth are unknowingly being effected by this?? Who knows what knock on effects this has already had if this is the case.

    1. Re:How will this effect atomic clocks? by cnettel · · Score: 2, Informative

      What's used is the resonance frequency, not the decay rate. It is also the resonance related to electron transitions, not the nucleus. Naturally, the fine-structure constant will influence just about any physical process, though. (That's one of the reasons to prefer the neutrino explanation.)

    2. Re:How will this effect atomic clocks? by O('_')O_Bush · · Score: 0

      Read the previous comments. This has already been explained.

      --
      while(1) attack(People.Sandy);
  50. Not really new news by jmakov · · Score: 1

    Some years ago I went to a symposium on global scaling phenomenon. I was very confused because there were some high profile (so I was told) phds having talks on various things that one would consider silly. One of them was "Die Struktur des Zufalls - Alle Prozesse haben eine gemeinsame kosmische Dynamik" (its german - use babelfish or sth). The talk was phenomenal, revolutionary and well... silly. Why would someone who discovered such a big thing talk on a little simposium with mainly non technical audience? Why not simply publish in Nature or somewhere similar? So thought he maybe made a little mistake in his analysis and came to earn some money. A year later the leader of this "Global scaling" group - Hartmut Müller - had a lecture on Global scaling (I think it was on university of KÃln,Germany) where he wanted to show that he can "teleport" information from a gsm phone (surrounded by water so that no EM radiation could come to or from the water box the gsm was in) but the gsm had signal and the experiment wasn`t walid (the lecture was taped, you can buy the CD on their site) But that would be his second public experiment, he`s already done one where he talked on a funny thing from Germany to Australia (one can find more out in the magazine "Raum und Zeit")... and so on. Well here`s a link where one can read about the research http://www.info.global-scaling-verein.de/Intro/Intro06E.htm. Also there`s some interesting material on their main site at http://globalscaling.de/index.php?option=com_content&view=article&id=49&Itemid=25. I can`t really say anything other than I`m shocked this really happened to be true. Some professors found it amusing when I discussed what I had heard/saw on that symposium other students laughed so I went with the main stream and forgot all about it. Maybe sometimes it`s best to think for one self and not let others think for you...

  51. The internet is great by Keys1337 · · Score: 1

    Thanks to the internet we can all learn about a 22 year old discovery today. I wonder how many other mind blowing preinternet discoveries are waiting in obscurity in some old journal just waiting to be rehashed and then put on arxiv so it can finally have its world debut.

    1. Re:The internet is great by jmakov · · Score: 1

      Some source please. Who / about what had written it?

    2. Re:The internet is great by Keys1337 · · Score: 1

      Well, if you read the paper it tells you. It's the ref #6. D. E. Alburger, G. Harbottle, and E. F. Norton, Earth and Planet. Sci. Lett. 78, 168 (1986).

      "An annual modulation of the 32Si/36Cl ratio is clearly evident, as was first reported in Ref. [6]."

      The decay data shown on the blog figure (which is the same as fig 1 in the paper) originated from the same 1986 ref.

  52. An asymptotic change could fix that by Anonymous Coward · · Score: 2, Interesting

    If the "real" rate of decay is 100 it could be (100-0.15) here on earth, (100-0.25) on Venus and (100-07) on the solar surface.

    Moving to Saturn could have it go to (100-0.01).

    After all, the change doesn't have to change linearly with distance but inversely.

  53. Schrodingers Cat. by Anonymous Coward · · Score: 0

    So is Schrodingers cat more likely to die in summer ow winter?

  54. Professor Homer Jay says by mooboy · · Score: 2, Insightful

    So our yellow sun... ...really can give Superman his powers!!!

    --
    There's no place like 127.0.0.1
  55. N-JAMMERS by victorl19 · · Score: 1

    For Gundam fans, doesn't this seem reminiscent of the N-Jammer?
    http://en.wikipedia.org/wiki/List_of_Cosmic_Era_superweapons#Neutron_Jammer

  56. What about Radioactive contamination? by Anonymous Coward · · Score: 0

    Taking this news at face falue, I'm kind of wondering what the ramifications would be for the dangers of radioactive contamination? If nuclear decay varies, then perhaps isotopes left behind from nuclear testing and nuclear accidents may actually decay quicker, or, slower. Also, this process might be influenced by some means, for instance a high-powered energy field or some device that emits neutrinos. If this is even theoretically possible, then perhaps we can clean up sites such as Chernobyl a lot faster, or perhaps even treat people who have been accidentally exposed to radioactive isotopes... Of course, on the flip side, people may find another reason to advocate the use of fission power plants. Personally, I'd rather wait for fusion. Heck, who knows the process of fusion might be affected by this knowledge in some way as well...

  57. Wrong by spun · · Score: 4, Informative

    The Fine structure addressed in this article is not the hyperfine structure which cesium clocks use.

    --
    - None can love freedom heartily, but good men; the rest love not freedom, but license. -- John Milton
    1. Re:Wrong by kmac06 · · Score: 1

      The fine structure is not the same as the fine structure constant (though they are of course related). If you had bothered to read either my post or the wikipedia article on hyperfine structure you would have realized that (the fine structure constant is discussed prominently on that page).

    2. Re:Wrong by spun · · Score: 1

      Care to explain how this very small variation in the fine structure constant would lead to a change in the hyperfine structure transition frequency of cesium?

      --
      - None can love freedom heartily, but good men; the rest love not freedom, but license. -- John Milton
    3. Re:Wrong by kmac06 · · Score: 2, Informative
      Read your own link. From wikipedia:

      The amount of correction to the Bohr energy levels due to hyperfine splitting of the hydrogen atom is of the order

      m/mp*alpha^4*m*c^2

      where

      m is the mass of an electron,
      mp is the mass of a proton,
      alpha is the fine structure constant (alpha approx 1/137.036),
      c is the speed of light.

  58. Re:Some under-educated thoughts... by blueg3 · · Score: 1

    Their suggestions for potential causes indicate they've already thought about this. They mention a potential cause is neutrino flux from the sun. Neutrinos are not stopped significantly by the Earth and certainly not by a box of lead (or any other material), but the neutrino flux drops off as 1/r^2 as you increase the distance r from the source.

  59. Please tell me... by OneSmartFellow · · Score: 1

    ... not more action at a distance. I find the existing stuff difficult enough to conceptualize.

  60. Young Earth by Anonymous Coward · · Score: 0

    Ha so the earth is 5000 years old!

  61. Does this explain 'Voyager acceleration' mystery? by PapaBoojum · · Score: 1

    This variance in isotope decay may very well explain the 'voyager acceleration' mystery. Base discrepancies between the on-board clocks and Terran clocks could cause it to falsely appear that the voyagers were accelerating.

  62. what other things vary over the year? by peter303 · · Score: 1

    The sun rotates in 26 days so that isnt it.
    The earth tilts toward or away from the sun depending on north/south hemisphere. Is there a latitudual variation in this effect?
    The planets orbits are all over the place in a year. I would expect a correlation with those.
    The earth does change its distance with respect the galactic center over the course of the year. Its an extremely small percentage change, but an annual one nonetheless.
    Seismologists recently figured out the cause of annual variation in background earth seismic noise (called Earth "hum"). It was attrubtesd to annual changes in storm activity over the oceans. Its not obvious to me how something like this coudl correlate with radioactive decay.

  63. One possible explanation by elrond2003 · · Score: 5, Interesting

    As someone who made the equipment that the scientist probably used to do the counting, I have one possible explanation. Most Multichannel Analyzers (MCAs) of the time used a line clock to determine the time. They assume that the power company delivered 60Hz power (or 50 Hz in Europe), This frequency was almost never precise but varied by .1 to .2% (one plant where I measured the frequency put out 58.8Hz for example, a real mess for us) from time to time. A systemic variation due to power loads (heating in winter/ AC in summer) could easily bias the power frequency by about the right amount with the right periodicity. The universe might well be safe.

    1. Re:One possible explanation by Creepy+Crawler · · Score: 1

      You cant be serious.

      Even we Amateur radio guys know how dirty power is, unless you go to a pure source. When we need pure power, we use a trusty brick of lead and acid called a Car Battery. 12v @ 600A is good enough for most equipment.

      Whoops, your device doesnt use 12v? Then build a regulator to go from 12v to 120v/60Hz AC. After building/buying, use an o-scope to verify no stair stepping. And sync to a pure 60Hz resonator and compare deviancy.

      The fact is, if they're using scientific equipment, there's no reason why these errors should be there. After all, you pay X multiple thousands for test equipment and they dont verify even basic power input for bad variations. Yuck.

      Good thing I use 12v systems for my radio. Low low harmonics means great signal and no noise on neighboring bands.

      --
    2. Re:One possible explanation by The+Iso · · Score: 2, Informative

      On page 2, the authors write,

      Moreover, the difference in latitude between BNL and PTB, as well as the difference in their climates, argues against an explanation of this correlation in terms of seasonal variations of climatic conditions such as temperature, pressure, and humidity etc., which could have inuenced the respective detection systems.

      If this was caused by power loads due to seasonal weather, opposite effects would have been observed in opposite hemispheres.

      But I don't know a tenth of what you do about MCAs, and I'm not qualified to judge whether you or the researchers are correct.

      --
      "You don't need a weatherman to know which way the wind blows." - Bob Dylan
    3. Re:One possible explanation by The+Iso · · Score: 1

      Excuse me, BNL and PTB are both in the northern hemisphere, unless there's a Bizarro Germany in the south that I'm not aware of.

      --
      "You don't need a weatherman to know which way the wind blows." - Bob Dylan
    4. Re:One possible explanation by rrohbeck · · Score: 2, Informative

      PTB produces the official time standard for Germany, like NIST in the US. You bet they have better internal timebases than power lines given the number of Cesium clocks they have standing around.
      The 50 Hz power frequency in most of Europe is derived from them (via DCF77.) Which also means that long term, 50 Hz mains is an excellent frequency standard. Many clocks run directly off of it. Short term variations can be pretty big though. Sounds like the 60 Hz in the US isn't as well controlled.

    5. Re:One possible explanation by marcosdumay · · Score: 1

      Ok, I find it hard to belive that they used a dirt power system as clock, just because the errors are so small. But could the distance from the Sun (the neutrino intensity) influence the detector?

    6. Re:One possible explanation by Anonymous Coward · · Score: 0

      Finally. A sane thought amongst the complete gibberish.

      I really want to know the followup to this. Does anyone have any ideas on how I can know when someone scientifically debunks it, without having to keep watching news outlets? I occasionally miss things. It would be nice to get an e-mail or something.

    7. Re:One possible explanation by bar-agent · · Score: 1

      unless there's a Bizarro Germany in the south that I'm not aware of.

      They pilot Zeppelins and speak with a Turkish accent.

      --
      i'd hit it so hard, if you pulled me out you'd be the king of britain [bash.org]
    8. Re:One possible explanation by acheron12 · · Score: 1

      Wait, physicists might measure using clocks whose rates vary according to the power company's whims? *facepalm*

      --
      there is no god but truth, and reality is its prophet
    9. Re:One possible explanation by elrond2003 · · Score: 1

      The accuracy works out when you calibrate the unit properly. Most measurements are only good to about 1-3% or so due to counting statistics, so this effect doesn't matter, Here they are extending the alleged precision far beyond what was capable in the machinery. I am just surprised by the orderliness of the data. Then again, I made a good living torturing numbers with statistical analysis to get them to confess to what my boss wanted to hear.

    10. Re:One possible explanation by infolib · · Score: 1
      So, I actually e-mailed this to the corresponding author. The reply:

      Thank you for your message which we have heard previously. The answer is that there is no problem: If your read the BNL paper you seen that the time standard in their paper was not the power company but a precision quartz crystal. For the PTB data they were not counting events but measuring currents, so again there would be no problem. In addition we would expect the scientists at PTB to be fully aware of these issues.

      --
      Any sufficiently advanced libertarian utopia is indistinguishable from government.
    11. Re:One possible explanation by MadUndergrad · · Score: 1

      Interesting suggestion, but if you read the paper they say that they used the ratio of the sample to a long-lived isotope as their measure. That would take into account variations in the MCA itself and thus that shouldn't be an issue. They seem to have ruled out external non-solar factors pretty thoroughly.

  64. or maybe they are overlookingthe totally obvious.. by goffster · · Score: 1

    i.e. Interaction of the gravitational field
    with nuclear forces? i.e. Grand unification?

  65. Diamonds are Forever... by geobeck · · Score: 5, Funny

    ...only if they maintain the correct Bond.

    --
    Find environmentally and socially responsible products on http://buy-right.net
  66. OT: Climate change by suck_burners_rice · · Score: 0, Offtopic

    ... synchronized with each other and with Earth's distance from the sun...

    Wait a minute. Did someone just say that the distance between the Earth and the sun changes over time? I know this story is about nuclear decay, but perhaps this has a bit more to do with "climate change" than whatever conditions people blame for the same effect. If the Earth gets, say, a million miles closer to the sun, it will obviously heat things up, and plenty more than all the SUVs and carbon in the world.

    But of course this is /., so watch this get modded -99 Lunatic for daring to insinuate something like that.

    --
    McCain/Palin '08. Now THAT's hope and change!
    1. Re:OT: Climate change by Ambitwistor · · Score: 1, Informative

      On 100 year time scales, variations in the Earth's orbit don't have anything to do with climate change. They're too small. Over 100,000 year time scales, they do become important: they lead to the Milankovitch cycles which are thought to cause the glacial-interglacial cycle.

    2. Re:OT: Climate change by ceoyoyo · · Score: 1

      How about modded -5 needs to read a physics text?

      The Earth has a slightly elliptical orbit. It is a bit closer to the sun in January than it is in July. That does have a very slight effect on temperature: southern hemisphere winter tends to be a little harsher than northern hemisphere winter. It's a small effect though, and is swamped locally by all sorts of other factors.

    3. Re:OT: Climate change by Keys1337 · · Score: 1

      Don't worry, the earth is moving away from the sun at about 10m/cy. The change in distance as pertaining to the article is due to the earth's orbit being an ellipse, not a perfect circle.

    4. Re:OT: Climate change by Anonymous Coward · · Score: 0

      Modded offtopic, not because any challenge to climate change is heresy, but because completely idiotic challenges are a waste of time, and there's no option for "-1, dumbass". Anyone who's surprised to hear that our distance from the sun changes in a yearly cycle needs to study some remedial 7th-grade science before saying what's "obvious" about the climate. Or maybe brush up on 16th-century history -- would it also surprise you to learn that the Earth orbits around the sun, and not vice versa? Oh, and by the way, the Earth is round, not flat.

  67. Seasonal Variation:: Temperature by Anonymous Coward · · Score: 0

    Hotter atoms vibrate and bounce about more vigorously than cold atoms... [relatively] loosely held extra neutrons in heavy isotopes just might be shaken loose from these more energetic hot atoms more easily/often than from colder, slower atoms... That's not even taking into account the relative motion/potential [deterministic/QM] of the nucleons in question. Seems like this is sort of a corollary of the Third Law of Thermodynamics.

  68. swell by Anonymous Coward · · Score: 0

    oh great, another score for the creationists. lol "See, we told ya carbon dating was created to look that way on 14,000 years ago." lol

  69. Err... that's how science works, ya know? by Moraelin · · Score: 2, Informative

    Speaking as a religious person myself, I always find it funny when scientists are forced into these "oops, we didn't think of that" moments.

    Why is it funny? That's how science _works_. The whole framework is geared towards, basically, fixing past mistakes or refining what wasn't quite right.

    They spend all their time asserting conclusions that then turn out to be - if not exactly wrong - not quite there yet.

    No real scientist can ever assert something as the final word, the immutable absolute truth, the thing beyond challenging. That's not how science works. You can only assert that, given the data you have, this theory is the simplest thing that explains that data. And here's the reasoning and the data, please _do_ try to poke holes in it and find cases that I've missed.

    Science isn't about a set of edicts to learn by heart. It's a process. A method. It's the way to refine the current knowledge towards something more accurate, and to find and discard knowledge that turned out to be wrong after all.

    Science doesn't have absolute truths. It only has falsifiable theories. Some of them actually getting proven wrong, or in your words "if not exactly wrong - not quite there yet" is not just normal, but the way progress happens.

    In other words, it's a good thing, not a bad thing. And any scientist worth anything already knows that.

    While I don't want to be seen as a fundamentalist "science sceptic" (because I'm not), I can't help wondering what else scientists have missed.

    _Hopefully_ a lot, because that's how progress happens. If there were nothing more to discover, and the theories we have were the whole and exact truth, well, then we'd be stuck at the current tech level for ever. Which isn't necessarily a good thing.

    Also, scepticism is a good thing in science. By all means, please be a sceptic. There is however a difference between scepticism as in "show me the data before I believe that" and block-headed counter-enlightenment as in "I already decided my immovable truth, and if any data contradicts it, then your data is wrong and the work of Satan." The latter isn't scepticism, it's just being a dumbass. And the fundies don't fail by being sceptical, they fail in the latter way.

    Ah, well. That's why I read science books.

    At the risk of sounding a bit like a personal attack, and I apologize in advance for it: try understanding the scientific method first. Because if I'm to take a guess based on what you wrote above, you don't really seem to understand what science _is_. Just reading some books and taking those predictions as some kind of religious truths, asserted by the High Priests, and as some failure of those if they turn out to be wrong... well, that's actually how religion works, not science.

    But then it's entirely possible that you've just not explained your position well enough, or that I've misunderstood it completely.

    --
    A polar bear is a cartesian bear after a coordinate transform.
    1. Re:Err... that's how science works, ya know? by tonyreadsnews · · Score: 1

      And the fundies don't fail by being sceptical, they fail in the latter way.

      Ahh, but just being skeptical about some topics and saying that your waiting for more evidence to make any decisions often times leads into personal attacks. Even in your original post, you say that the short and long answer is "Nope" which is an assertion even though TFA says:

      If nuclides such as 32Si, 36Cl, and 226Ra respond to changes in the solar neutrino flux due to the time-dependence of 1/R2, then they can also respond to changes in intrinsic solar activity which are known to occur over time scales both longer and shorter than one year.

      which refutes that and your #2 (since if the period is longer then a year, you would need more then 1 year to calibrate)

      Not to mention that the sun is the cause for this study, but isn't required to generate the effects. The field or neutrino flux could come from another possibly stronger source that may only come every 32 million years???
      What if it were tied to something like this or the binary star reference in here

  70. not a constant by jb.cancer · · Score: 1

    First, some theorists think the sun produces a field that changes the value of the fine structure constant on Earth as its distance from the sun varies.

    As any decent programmer would tell you, if it changes you call it a variable.

  71. This finally explains it! by Anonymous Coward · · Score: 0

    We always knew there had to be inaccuracies in dating methods that showed the earth was more than 6000 years old.

  72. Re:Synchronized to r^2, not r -- No. by goodmanj · · Score: 2, Insightful

    The authors just chose to plot vs r^2, rather than r. Since the data is noisy and Earth's orbit is only slightly elliptical, the data would correlate just as well to r.

  73. Re:or maybe they are overlookingthe totally obviou by Forbman · · Score: 1

    Get serious. It's influenced by Dark Matter.

  74. WOW! Talk about opening a can o' worms! by mmell · · Score: 1
    Think about it - if the fine-grained constant isn't (constant), how does that affect, say, atomic clocks? Originally driven by the radiative (microwave) output of excited hydrogen, it was assumed that here was an oscillator which couldn't change period - period.

    Now if the rate of nuclear decay isn't constant (there's always been a statistical element to predicting nuclear decay), it seems to be the cumulative effect is to change particular interactions at the subatomic level. This has to have a subtle but measurable effect on electromagnetic quanta (photons) emitted during the change in energy state of an electron.

    So . . . is Heisenberg rearing his ugly head for us again? Now, even proximity to a star can affect the accuracy of our observed results? I only ask because every planet I've ever been on tends to be within around 1AU of its primary.

  75. Have you told the authors? by Kupfernigk · · Score: 2, Insightful

    This could be one of those "oh shit" moments. Nowadays, when the slightest observational anomaly gets string theorists salivating, perhaps we need to lay in a stock of Bill Ockham's finest razor blades.

    --
    From scarped cliff or quarried stone she cries "A thousand types are gone, I care for nothing, no not one."
  76. Speaking of radioactivity... by Anti_Climax · · Score: 1

    In the interests of learning, I propose we switch it off to see what happens.

    That didn't work too well for Chernobyl.

    --
    Even people that believe in pre-destiny look both ways before crossing the street.
  77. Re:It's a trick! (slightly OT reply) by MickLinux · · Score: 1
    Actually, no joke, I donated my engineering books to a thrift store, where they will be thrown away if they aren't bought by someone else.

    I have come to be convinced of a general faulty premise in most of our learning and machinations (economics, engineering, medicine, etc.) that was founded in the crucible of a faulty premise in education: "if you work hard and get a good specialization, you will get a career that will provide you with the things you want." Said statement ignores the fact that when you are in a society of theft, hard work simply gives more to more thieves.

    In re-evaluation of our engineering, I conclude that the false premise is that our engineering can improve our lives. I doesn't: it just increases the power of the powerful. The difference between a household with a broom and a household with a vac is not a difference in how much time cleanup takes (just as an example). With all our engineering, our environment is much worse, not better. Or for another example, our petroleum-intensive farming is not superior to bio-intensive farming, but it just means that the farmer can keep much more of his profits, producing fewer jobs, less food, and more pollution.

    Likewise, I find that the basic premises of medicine seem to be faulty. Again, our lives don't improve greatly with our medical knowledge -- more and more, it is inaccessible. But the faith healings of the pentecostal movement defies medical explanation (or those of Lourdes). Howbeit if faith in medicine interferes with a much better, free, graced alternative, much as artificial birth control interferes with a much better, graced alternative (NFP... you'd have to go through it to understand)?

    So in the end, I'm losing my confidence in technology, and the promises that it seems to give.

    So will I buy a new, updated nuke eng. book? Nope. I've gotten rid of the ones I have, and don't expect to use them again. I'm getting off the bus.

    --
    Correct Horse Battery Staple: 72 bits of entropy. Enter "Correct H" into google. When it generates the phrase, that's
  78. Everything she touches, / Changes. by mysticgoat · · Score: 4, Interesting

    TFA's frame of reference is the Earth's orbit about the Sun, and reports a small but significant correlation between aphelion - perihelion and decay rates of some radioactive nuclides. TFA suggests that the 4% change between Earth's closest approach to the Sun and its most distant point is a possible cause for the change in decay rates.

    When the frame of reference is expanded to galactic distances, we find that Earth's aphelion point is coincidentally very close to a line drawn from the Sun to the center of the galactic core. So it could also be that some shielding or suppressive effect of the Sun's local environment is reducing decay rates when the Earth is behind the Sun relative to the galactic core.

    Proposed hypothesis: the changes in radioactive decay rates are related in an unknown fashion to the annual changes in the geometry of the Earth - Sun - galactic core.

    This could probably be ruled out with a couple of tests of the existing data:

    Aphelion occurs on Jan 4, while Earth's fullest exposure to any presumed galactic core influence occurs on Dec 17. Does the data suggest that increased activity centers around aphelion, or 18 days earlier?

    If TFA's heliocentric model is correct, the change in rates of decay from month to month will be a smooth sinusoidal curve over the course of the year. But if the galactic core is involved, the changes in rates of decay will depart from this since the ecliptic does not parallel the galactic plane, and the degree of the Earth's "exposure" to galactic core will vary in a more complex way. Does the data support either of these conjectures?

    I'm not going to cite my references here: they would be a distraction. Key words for google: aphelion, perihelion, solstice, galactic core, "plane of the ecliptic", "galactic plane". Um, a quick review of high school trigonometry might be useful, too.

    Kudos to all the researchers and lab assistants who contributed to this work. It sounds like years of seemingly mindless drudge data collection went into this database. Yet the results are stunning: something Out There is affecting "constants" that we thought were intrinsic and immutable. That changes things. That changes everything.

    1. Re:Everything she touches, / Changes. by Anonymous Coward · · Score: 0

      I would also test if the direction of movement of our galaxy is overlapped or against the direction of Earth moveemnt through space.

    2. Re:Everything she touches, / Changes. by mysticgoat · · Score: 1

      I would also test if the direction of movement of our galaxy is overlapped or against the direction of Earth moveemnt through space.

      I don't understand. Did I just hear a "whoosh"?

    3. Re:Everything she touches, / Changes. by marcosdumay · · Score: 1

      Doesn't look like a "woosh". I guess the GP is simply talking about another factor (but didn't care to give a frame of reference). Anyway, I'd ignore any aether based jokes.

      I also tought about the Milkway's core after I readed somebody talking about dark matter, but this graph (from another previous poster) shows peak activity after the aphelion, not before it.

    4. Re:Everything she touches, / Changes. by Anonymous Coward · · Score: 0

      If plotting the movement of Earth vs movement of our galaxy it turns out as corkscrew pattern in a river,and the corkscrew is aligned more to the direction of river flow it overlaps its movement(when the movement is to the direction of flow,which should be at the moment when the decay peaks).
      In other times the direction of Earth corkscrew movement through space is not aligned and shows other rates of decay,which are proportional to the angle from the galactic core "magnetic-field like" lines that move forward.

    5. Re:Everything she touches, / Changes. by mysticgoat · · Score: 1

      Okay, I sort of think I understand where you are going with this now. It will be interesting to see if anyone who knows anything about this kind of cosmology can answer your question.

      But my understanding of the state of astronomy is that our very best models of what we know for sure all state that galaxies like the Milky Way cannot exist. We have to use this tremendous fudge factor called "dark matter" to get the models anywhere close to what we can observe on any cloudless night. Since all these models are so badly flawed, there is no reasonable way to use them to guess the shape of Sol's path around the galactic core. And since Sol has traveled less than 10 degrees of arc during the 5,000 years of our recorded history, even if archeologists came across some ancient databases of pertinent observations, we wouldn't have a long enough span of data to determine Sol's path.

      So I think we would need to do observations for about 20,000 years before we could begin to construct the kind of plot you are talking about.

      This is not to say that your underlying proposition is wrong. But it needs to be re-expressed in different language; in phrasing that would support hypothesis formulation and testing.

  79. Re:Does this explain 'Voyager acceleration' myster by Iowan41 · · Score: 1

    Or in the way I've been suggesting for years; with the fine structure constant actually being variable depending on electro-magnetc-gravitic fields, at Voyager distances, light propagates at a higher rate, making it seem as if the Voyagers were closer to Earth than they actually are.

  80. The only reason we don't use the 'spent' rods by Iowan41 · · Score: 1

    Is that Jimmy Carter issued a decree that we not use them. Otherwise we can refine them and use them again, and again.

    1. Re:The only reason we don't use the 'spent' rods by rev_sanchez · · Score: 1

      Some guy at Scientific American seems to think it is a bad idea. http://www.sciam.com/article.cfm?id=rethinking-nuclear-fuel-recycling

      --
      If you didn't come to party don't bother knocking on my door. Prince '1999'
  81. And inside the sun? by Jordan+ez · · Score: 1

    If this effect varies with distance to the sun, how much would it affect physics INSIDE the sun? If it can affect decay can it also affect fusion? If so what would that mean for our understanding of the life cycle of stars?

  82. variation of radon levels by rev_sanchez · · Score: 1

    I wonder how much the seasonal variation of decay in radium 226 would explain the variation in home radon testing results.

    --
    If you didn't come to party don't bother knocking on my door. Prince '1999'
  83. The Exact Opposite by physicsphairy · · Score: 1

    Based on the data presented so far it would appear that increased ambient radiation (or whatever it is) decreases decay rates, so being farther from the sun would result in an increase in nuclear decay.

    Would be kind of interesting if we were thereby unable to take nukes out of the solar system (how's that for intelligent design!) although I rather doubt the effects would be nearly so pronounced.

  84. Cesium Clock? by rebill · · Score: 1

    If the decay rate is variable based on distance, I wonder - are the vibrations used by the Cesium clocks are variable, also?

    All kinds of research is based on the assumption that a second (or other favorite unit of time) is measurable.

    --

    Chivalry is not dead, it's just frequently misspelt. - M. Langley

    1. Re:Cesium Clock? by Tenebrousedge · · Score: 1

      You should read up on the efforts of (e.g.) the United States Naval Observatory at keeping proper time, it's pretty cool stuff. In short, they use a lot of different devices to try and keep accurate time, not just cesium clocks. Also, cesium clocks work by what I think is called stimulated emission: they bombard the atom with microwaves until the electrons start losing their shit. In any case, it's not related to nuclear decay. While accurate timekeeping can be a challenge, this development shouldn't affect our current systems.

      IANAP

      --
      Those who advocate genocide deserve every protection afforded by law, and none afforded by common human decency.
    2. Re:Cesium Clock? by rebill · · Score: 1

      Actually, I have been a fan of the USNO for a long time. Very cool stuff.

      However there is a passage that I feel is most relevant:

      The Second

      In 1967, the 13th General Conference on Weights and Measures first defined the International System (SI) unit of time, the second, in terms of atomic time rather than the motion of the Earth. Specifically, a second was defined as the duration of 9,192,631,770 cycles of microwave light absorbed or emitted by the hyperfine transition of cesium-133 atoms in their ground state undisturbed by external fields.

      [emphasis mine].

      My thought was this: If the distance from the sun affects the nuclear decay rate (which occurs at the subatomic level), could it also affect the speed at which the electron energy states changes in the cesium clock design?

      Science starts by asking questions. Even when the answer to the question turns out to be, "nope, not that we can tell", other interesting things can be found along the way.

      --

      Chivalry is not dead, it's just frequently misspelt. - M. Langley

    3. Re:Cesium Clock? by Tenebrousedge · · Score: 1

      It seems like it would sooner affect how soon the clock would stop working than the electron transition levels, but I read that cesium-133 is a stable atom and therefore not subject to decay. Serves me right for "knowing" that cesium is radioactive.

      --
      Those who advocate genocide deserve every protection afforded by law, and none afforded by common human decency.
  85. Diamonds burn? by Anonymous Coward · · Score: 4, Interesting

    Trivia: Believe it or not, I once asked a chemist, who studied diamonds, the temperature at which they burned. His reply was that they didn't. Instead, according to him, at about 2000 F they break down into graphite and then the graphite burns.

  86. Acceleration/Deceleration by dcw · · Score: 1

    Looking at the graph of the data, it looks like the decay rate changes in sync to changes in the Earth's speed towards/away from the sun. If so the rate of decay in the space probes PUs would only change when it changed its rate of speed away from the sun, not its distance. A test would have to factor this in as well.

    --
    "All those, moments will be lost, in time, like tears, in rain. Time to die." Roy Batty
  87. Probably something rather ordinary by Anonymous Coward · · Score: 0

    Rather than the decay rate itself being affected by any solar-earth cycles, it might be an ordinary process that affects detectors systematically. It is like plugging a laser spectrometer into a noisy 60Hz plug and then wondering why you have a big 60Hz spike in your data. It's not that the physics of spectroscopy is affected by the power company, rather the assumptions about the instrument's operating conditions weren't held constant. Of course, that's probably the first thing these guys thought of...Interesting to see how peer review sees this work.

  88. Maybe Alexander Franklin Mayer Is Right? by Bad+Labrador · · Score: 1

    Alexander Franklin Mayer (jaypritzker.org) posited that Einstein made a very small error in the Theory of Relativity that results in what he calls "gravitational transverse redshift". The implications being that the Universe is not expanding and that time is a local verticle (ie time is a local variable within the universe.) It explains a stack of anomalies (including the Pioneer anomaly) I have a sneaking suspicion that that these experiments, if their results are shown to be correct, will prove Mayer is correct. From memory Mayers calculation of the effect of Einstein's error is about 1 part in 45 million.

  89. Uhhh, wha? by ElboRuum · · Score: 1

    FTA:

    We think that the decay rates of elements are constant regardless of the ambient conditions (except in a few special cases where beta decay can be influenced by powerful electric fields).

    Why on earth would we think this? The first bit, I mean, not the special cases? I sure as hell wouldn't think this. As we're finding out lately, very few things in the universe are constant.

  90. Leroy Jenkins by Anonymous Coward · · Score: 0

    I am the only one concerned that Leroy's brother Jere Jenkins is the first author? Hopefully the tendency to run headlong into trouble isn't genetic.

  91. This raises an interesting life question by Jon+Abbott · · Score: 1

    So if evolution requires the occasional presence of radioactive carbon in DNA, and if carbon happens to be one of those elements affected by planet-star distance, then wouldn't the habitable zone of life be considerably smaller? In other words, if for instance carbon-13 has a faster decay rate for planets closer to their star, then evolution would be less present (less carbon-13 to alter DNA) and life may cease to exist as a result. This all assumes of course that evolution is required for life to exist in the long-term.

    1. Re:This raises an interesting life question by marcosdumay · · Score: 1

      That is a big chain of "if"s. Also, life doesn't seem to care about slow evolution here on Eath. It moves slowly when things are ok, and fast when they aren't. If something, I'd be concerned about a big mutation rate, not small.

  92. Because they're still dumbasses by Moraelin · · Score: 1

    Ahh, but just being skeptical about some topics and saying that your waiting for more evidence to make any decisions often times leads into personal attacks.

    Because that's not how science works. The current theory at any given time is simply the current best at explaining the data we have. Nothing more, nothing less.

    Still waiting for more evidence if it didn't reach their pre-conceived "solution" isn't any useful kind of skepticism and it isn't science. It's just a way of clinging to a fairy tale which has even _less_ evidence to support it.

    which refutes that and your #2 (since if the period is longer then a year, you would need more then 1 year to calibrate)

    Well, that's perfectly ok then, because we calibrate for thousands of years, nor for one year. And it's calibrated against stuff which is already known to have happened at a given time.

    E.g., yeah, you _could_ imagine a scenario where carbon decay was 1,000,000 times faster until very recently. (To account for the difference between billions of years and the thousands of years of new-Earth creationists.) But then in that scenario, Rameses II's boat would be mere days old. We already _know_ that that's not the case. Our measurement is already calibrated for the interval we're measuring, and shows _no_ sign whatsoever of any major deviation like that.

    At any rate, see that 1,000,000 times difference required to support a young Earth. It's pretty damn hard to massage a 0.15% periodic difference into accounting for six bloody orders of magnitude.

    Not that it will stop fundies from pretending that it's still some controversy.

    Not to mention that the sun is the cause for this study, but isn't required to generate the effects. The field or neutrino flux could come from another possibly stronger source that may only come every 32 million years???
    What if it were tied to something like this or the binary star reference in here

    Well, it _could_ be the case, but see again:

    1. we're talking about explaining a difference of 6 freaking orders of magnitude. Requiring an effect almost 10,000,000 times stronger than the Sun produces. It's not a minor fluctuation, it's something which would have _massive_ effects on almost everything on Earth.

    Life, for example, would experience almost instant multiple-DNA breaks where C14 instantly decays, and pretty much just instantly die. We're talking C14 everywhere getting a half-life of 0.005 years, or less than two days. It would be an _extremely_ radioactive isotope in those conditions. E.g, a helluva lot more radioactive than the Caesium isotopes used for radiotherapy, or about 100 times more radioactive than the most active isotope of Polonium. Most C14 atoms in your DNA or proteins, would decay and break that DNA or protein, before the cell has any chance to repair the previous breaks. That effect alone is comparable to a massive ionizing radiation dose. But those breaks at that rate would cause additional ionization inside the cells, so it would be pretty damned deadly.

    Other radioactive materials would experience an even more dramatic effect. Uranium ores everywhere would just freaking blow up. You don't even need a chain reaction there: merely shortening the half-life like that, would cause a lot of it to split, releasing tremendous amounts of energy. For that matter, since the Earth's magma gets its energy from fission, the freaking inner side of the planet would suddenly get 10,000,000 times more energy and probably blow up the planet. But at the very least, it would melt the surface and vapourize all life.

    So if something like that had ever happened, at the scale needed to keep young-Earth creationists here, we wouldn't be here. We already have a pretty damn good indication that it didn't happen, and it couldn't have happened.

    2. Our estimate of the Earth's universe is based on more than C14 decay. Sorry. So it would take a lot more th

    --
    A polar bear is a cartesian bear after a coordinate transform.
  93. lol wut by Alex+Belits · · Score: 1

    I wasn't clear in that when I previously used the word "direct" I didn't mean "a direct cause", I was just stating that the connection between the Earth and Sun was a direct connection, as opposed to all implied indirectness of the watered down semantics used by scientists too afraid to admit that there is electricity in space.

    As far as the cause, I meant to imply that these changes in the electromagnetic forces alter something else that we don't fully understand, even though we thought we did because of how (relatively) constant these forces have averaged in our extremely short time observing them.

    What would we all do without that biting pear?..

    --
    Contrary to the popular belief, there indeed is no God.
  94. what? by Anonymous Coward · · Score: 0

    it's magnetism, you insensitive clod!

  95. Follow up experiment during solar eclipse by Anonymous Coward · · Score: 0

    Check out follow up experiment to the article at:

    http://news.uns.purdue.edu/insidepurdue/2008/080828-IP-Web.pdf

    Page 8/9

  96. follow up work using a solar eclipse by Anonymous Coward · · Score: 0

    Interesting follow on work done during a solar eclipse is found at http://news.uns.purdue.edu/insidepurdue/2008/080828-IP-Web.pdf on page 8

  97. A better idea by Anonymous Coward · · Score: 0

    Instead of looking for ways to get rid of waste, a better idea is to find ways to use waste. The problem with nuclear "waste" is that it has excess binding energy left, and a natural tendency to release it (via decay) at fairly high rates. We actually do know how to utilize that energy currently, but generally at very low efficiency and with more work than just digging up some more uranium.

    The 2nd biggest potential development in nuclear energy (aside from viable fusion power), is an effective (and for mainly political reasons, proliferation-resistent) fission fuel cycle.

  98. Diamonds are not, in fact, forever by Lars+T. · · Score: 2, Funny
    So what are you going to do, tell Shirley Bassey she needs to go back into the studio and re-record the song?

    Graphite is for-evah, shiny graphite is for-evah, unless you use a bloody rubber, for you Americans that's an eraser...

    --

    Lars T.

    To the guy who modded me down from perfect to terrible Karma - Apple haters still suck

  99. Astrology implications by Neoporcupine · · Score: 2, Interesting

    Oh sweet Orion! Astrology may be true! Stars have some unknown influence on local physical properties depending upon distance. Is it any massive body? Moon/Planets? You just know this research is going to be abused, right?

  100. Re:It's a trick! (slightly OT reply) by orkysoft · · Score: 1

    Likewise, I find that the basic premises of medicine seem to be faulty. Again, our lives don't improve greatly with our medical knowledge

    Good luck with your leech therapy, dude.

    --

    I suffer from attention surplus disorder.
  101. A matter of scale by DrYak · · Score: 1

    We always assume the laws of physics are the same everywhere. This is probably true at a fundamental level, but it doesn't mean we understand all the laws of physics.

    Yeah, it's clear that the science is in an eternal "work in progress" state. It's the fundamental way in which science work that causes all the laws of physics to be falsifiable, eventually, if we come up with a better model.

    But it's another thing that most of the time, the newer and better physics model will globally be the same as the current one, and only differ in small corner case and details, where exceptionally the old model failed and not the new.
    The progress lies in the details (apparently, details aren't devil's monopoly).

    But on the other hand, if the older model have worked "well-enough" for so long and that we only reconsider them now, maybe that means that they are really close to the reality, except for some exception. But don't expect big moments of "Sorry, everything you learned is completely bogus and should be throne away. Instead learn our new explanation of everything" - that's more characteristic of crackpot theories (well, crackpots, and publications whoring for money by trying to overstate the importance of the result interpretation).

    Take for example, Newton's laws of dynamic. They were considered good for a very long time. They are still good enough approximation for most of the everyday cases.

    Einstein came with his own model of physics. Which basically gives the same result for most usual situations, and only show its differences at extreme cases (travel at near speed-of-light, gravity lens-effect of massive stars, etc...)
    It's not that the old model has to be thrown away as it is utter bullshit. It's just that the old model was close enough to reality for most situations and that the new model gives the same results most of the time and performs better on some extreme cases.

    Same goes for string theory. It helps explain some even rarer events, for which relativism and quantum mechanic conflicts.
    The kind of stuff that we currently can't even produce or find to test our models gainst.

    As such consider the current problem.
    Radioactive decay is known and has been used for ages. Carbon dating has worked very well up to now.
    If something new happens, it would be a small detail. Which doesn't contradict all the successful usage up until now (if we were *that* wrong about the model we should'nt have expected it to work at all up until now).

    As such, yeah, TFA points out a modification about our knowledge of isotope decay. But this change only accounts for a very small deviation (~0.2%). If neutrino's effect had been bigger, we would have realised much earlier.

    --
    "Sufficiently advanced satire is indistinguishable from reality." - [Tips: 1DrYakQDKCQ6y52z6QbnkxHXAocMZJE61o ]
  102. You'll all hate me for bringing up Astrology, but by Fantastic+Lad · · Score: 1

    I just did.

    The patterns are observable to any who look, and there have long been physical mechanisms which might be used to explain those patterns. Here is another one.

    There is no magic. Long live magic.

    -FL

  103. Correction! by Fantastic+Lad · · Score: 1

    Correction.

    I should have said that there have recently been physical mechanisms examined which might be used to explain the patterns noted in astrology. Electromagnetics and the ability of cells to react to EM radiation in a variety of spectrums in combination with lunar gravity. --Both of which have been posited as possible reasons why subterranean organisms have the apparent ability to regulate their internal cycles with the day night cycle of the planet, to take one example.

    -FL

  104. Is This Effect a Power Source? by Doc+Ruby · · Score: 0, Redundant

    If the Solar System does indeed contain a field which inhibits radioactive decay, even a little, and is dynamic, then can't motion through that field be harnessed as a power source?

    Like how the Earth's magnetic field, which is very weak compared to the electromagnetic phenomena that humans generate with which it interacts, still has enough power to drive effects in very tiny devices, like magnetized compass needles, and even smaller microelectronics. Except that we're not really orbiting very much through Earth's magnetic fields that are either really small, or don't have lots more power available from other sources, like solar power or precharged batteries.

    But on Earth, though, really small devices that could harness this effect for power are all already flying through this field, showing its effects. And plenty of them aren't candidates for solar power, because they're not reliably hit by sunlight.

    If we can understand and engineer this force, can't we make perhaps nanotech with embedded atoms or molecules that are pushed around by this force enough to power the rest of the devices? At a cost of slowing the Earth's orbit by an imperceptible amount, but which is enough wattage to really make a difference in usable machines.

    --

    --
    make install -not war

  105. Will the creationists pick up on this? by Max+Threshold · · Score: 1

    Creation pseudo-scientists have never touched the one and only flaw in the accepted methods of isotopic dating: the untestable assumption that the isotopes on which the measurements are based were deposited (and have decayed) at roughly the same rate over the scale of time being measured. Most of them don't bring this up because their understanding of real science is so poor they wouldn't understand this weakness in the theory even if it were explained to them. The others probably avoid it because to acknowledge the small possibility that scientific dating methods are flawed would also be to acknowledge that they are most likely accurate. But this new finding actually raises the probability that dating methods are flawed to a point that should merit investigation. The idea that the planet is 6000 years old will still be laughable, of course...

  106. Re:It's a trick! (slightly OT reply) by MickLinux · · Score: 1

    That's just it. George Washington was leeched to death. The cure of his pneumonia killed him. Yet I don't deny that medicine does in many cases work, or that engineering does in many cases work, for specific tasks. I just find that it doesn't significantly improve our lives. Indeed, when you balance out the cost of medicine against the benefits, it seems to me that it has only limited value. Look up Smith Wigglesworth, a pentecostal preacher who also healed many people through faith healings -- he charged nothing for this. Although not healed by him, I do know of a woman who was healed of one leg shorter than the other, in this way. Yet even if we didn't have faith healings, I find that an openness to life as it is seems to improve one's life far more than the continual death-fearing focus on maintaining one's health.

    --
    Correct Horse Battery Staple: 72 bits of entropy. Enter "Correct H" into google. When it generates the phrase, that's
  107. Re:It's a trick! (slightly OT reply) by orkysoft · · Score: 1

    Leeches, as used back in the bad old days, are not good medicine. Those doctors back then didn't know that, because they believed that ill people have bad blood in them, and leeches must be used to suck it out. Complete bollocks in retrospect.

    Medicine does in many cases work, and nowadays it is a science, with double-blind tests for new medicines. Engineering used to be bad: look at all the centuries-old buildings with their massively overengineered walls, and the puny bridges they used to build way back, and what the application of mathematics has done to the discipline: now we have skyscrapers and huge bridges, all over the world.

    So, unless you want to live in a mud hut and die of dysentery on your trek to the west in search of a new food source, yes, the application of math and science to human needs has drastically improved our lives.

    Faith healings? Of course! That's why nobody died from infectious diseases back in the dark ages, when people were so much more pious! Hey, that's the solution to the health insurance problems in the USA: if you get ill, go to church and have people pray for you, and in exchange, you'll pray for other people when they get ill, it's almost like BitTorrent!

    From the Wikipedia page:

    Healing claims

    Wigglesworth believed that God had cured him of hemorrhoids, and much of his ministry was focused on faith healing. He avoided medical treatment as far as possible, despite suffering from kidney stones in his later years. In his books, Wigglesworth said he refused any surgical procedure stating that no knife would ever touch his body either in life or death. This was substantiated by a friend, Albert Hibbert, who stated in his book 'Smith Wigglesworth: The Secret of His Power" that no autopsy was ever performed after Wigglesworth's death. Wigglesworth even claimed that God had allowed him to raise several persons from the dead.

    I think this speaks for itself.

    --

    I suffer from attention surplus disorder.
  108. garden path.... by stonewolf · · Score: 1

    Why only look at the factors mentioned by the authors? Does the combined gravity of the sun, moon, and oh say Jupiter, correlate better than the sun alone? What about the speed of the Earth around the galaxy? That varies on a yearly not so?

    No, I am not suggesting that these are the real factors to look at, I am just saying that all the discussion is centered around the ideas of the authors without any one suggesting something else. don't let the original authors imagination limit our imaginations.

    Stonewolf

    1. Re:garden path.... by Geoffrey.landis · · Score: 1

      Why only look at the factors mentioned by the authors? D[...] I am just saying that all the discussion is centered around the ideas of the authors without any one suggesting something else. don't let the original authors imagination limit our imaginations

      Exactly. As I said, the data is lousy, and the correlation to the Earth's distance from the sun is out of phase.

      Let me rephrase the question slightly. "Which of the many source of measurement noise in decay-rate data, at the one tenth of one percent level, might vary with a one year period?"

      --
      http://www.geoffreylandis.com
  109. Re:It's a trick! (slightly OT reply) by MickLinux · · Score: 1
    Wigglesworth was very old when he died. That said, in his life he was healed through faith of a near-fatal appendicitis, and the kidney stones were supposed to have required surgery to not be extremely serious. (In other words, it sounds to me like staghorn kidney stones).

    I'm not saying engineering (or medicine) doesn't work. I'm saying that it keeps going bad on us, because all it does is increase our power. But if you give more horsepower to a drunk on the road, he just hits a tree all the harder.

    The engineering and medicine don't increase our wisdom, and that is what is needed to improve our quality of life and lifestyle.

    The bad thing about the engineering and medicine is that they take away from the faith focus, which in turn *can* increase our wisdom.

    --
    Correct Horse Battery Staple: 72 bits of entropy. Enter "Correct H" into google. When it generates the phrase, that's
  110. Lunar cycle by Anonymous Coward · · Score: 0

    I'm suprised nobody else has pointed out this.
    If you look at the graph, it has incredibly regular spikes up and down, with a period very close to a month.

    Also the spikes seem to have a somewhat higher amplitude than the annual wave, which fits well with gravity from the moon being about twice of that of the sun, iirc. I wonder how well the graph would correlate with the tides, which also is due to solar and lunar gravitational pull.

    Janna

  111. Gravity? by Randym · · Score: 1
    The first thing that leapt to mind was: "Is there a gravitational influence creeping in here?" I know that they are talking about the fine structure constant, but this idea might point the way to the Theory of Everything.

    If that's true, then our perception of (say) dark energy might be significantly related to our (relative) nearness to the galactic core. Our various instruments might be subtly compromised, and our measurements distorted, by the immense amount of gravitational influence locked in the black hole at the center of the Milky Way. Our apparent perception of the increasing acceleration of the Universe might turn out to be nothing more than a local phenomenon.

    One way to test this theory would be to send off two spacecraft with decaying isotopes: one heading directly coreward, and one going in exactly the opposite direction. If scientists were able to tease out a shift in decay rates based on our distance from the sun, a mere decade of data from these two spacecraft might yield amazing results!

    --
    DNA is a Turing machine. You, however, being dynamic and emergent, are not.