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Data Suggests Early Universe was Superfluid

Ted writes "Experiments at the worlds largest nuclear collider, RHIC, at Brookhaven National Laboratory reveal striking new features of the state of the early Universe. With RHICs enormous collision energy, the researchers can create matter that is composed of the fundamental building blocks of nature, quarks and gluons, in a state with temperatures of more than 1000 billion degrees. The Universe is believed to have been in this state in the first microsecond after the Big Bang. Later the quarks and gluons were trapped in the nuclear particles that the visible universe is composed of today. Until recently, researchers have thought that the quarks and gluons formed a gas. The latest results from RHIC, however, indicate that under the extreme conditions just around the phase transition from quarks and gluons to ordinary matter, the quarks and gluons behaved as a liquid - in fact an almost perfect liquid."

56 of 405 comments (clear)

  1. i had suspected this for years by peculiarmethod · · Score: 4, Funny

    indicate that under the extreme conditions just around the phase transition from quarks and gluons to ordinary matter, the quarks and gluons behaved as a liquid - in fact an almost perfect liquid."

    This sfinally proves what I have been trying to explain for years.. the universe was born from a pool of beer!

    --
    ** "It's not my job to stand between the people talking to me, and the ones listening to me." -- Pego the Jerk
  2. Cosmic Egg Not Cooked Solid ... by rewinn · · Score: 4, Funny

    ... resulting in Big Splat.

  3. Obligatory Trek by codesurfer · · Score: 3, Funny

    Fluidic Space? I knew I saw species 8472 around here the other day!

    1. Re:Obligatory Trek by Anonymous Coward · · Score: 2, Funny

      Well, Data is the one saying it......

  4. That's one interpretation by jd · · Score: 4, Informative
    The scientists themselves suggest that the liquid state is one of a number of states that quark/gluon soups can take, but that the early Universe was still most likely a gas.


    Of course, all their software is in CVS, so it shouldn't be too hard to check their calculations. :)

    --
    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)
    1. Re:That's one interpretation by Quasar1999 · · Score: 4, Funny

      check their calculations??? Until 5 minutes ago I didn't even know what a gluon was... (I have heard of a quark... and no, not the one from Star Trek)...

      I couldn't check their spelling at this point... forget their calculations...

      --

      ---
      Programming is like sex... Make one mistake and support it the rest of your life.
    2. Re:That's one interpretation by MyLongNickName · · Score: 5, Funny

      I thought a gluon was a derogatory term for a toupee.

      --
      See my journal for slashdot ID's by year. Mine created in 2005. http://slashdot.org/journal/289875/slashdot-ids-by-year
    3. Re:That's one interpretation by SensitiveMale · · Score: 2, Funny

      The scientists themselves suggest that the liquid state is one of a number of states that quark/gluon soups can take, but that the early Universe was still most likely a gas.

      That's what Mick Jagger said.

    4. Re:That's one interpretation by Raindance · · Score: 4, Informative

      Right. To clarify,

      Matter can be in a "superfluid" state when in solid, liquid, gas, and plasma form (this is a fairly new discovery).

      The term "superfluid" has more to do with whether various properties obtain than being an actual fluid.

    5. Re:That's one interpretation by jericho4.0 · · Score: 4, Informative

      Superfluidity is the complete absence of viscosity, something kind of hard to visualize in a solid.

      --
      "A language that doesn't affect the way you think about programming, is not worth knowing" - Alan Perlis
    6. Re:That's one interpretation by Anonymous Coward · · Score: 2, Insightful

      Its not a new discovery at all. Glass is a fluid and this has been known for years. All matter of any state can be a fluid. By state I mean solid,liquid or gas. So solids/gases/liquids can be a fluid. I think your confusing the word fluid with liquid/gas in your last sentence.

      States of matter and fluid poperties are totaly different things and are often confused. Hope that clarifies it alittle better.

    7. Re:That's one interpretation by midav · · Score: 2, Interesting
      I am not sure that you understand what you are talking about.

      Glass is a fluid (a liquid,) it has never ever been a solid. The difference between glass and water is superficial and it is only due to difference in viscosity. Glass only looks to us solid because of specifics of our time perception. If we could percieve microseconds as we do years, water would have looked like a solid to us, if, for example, you tried to break it.

      I hope you will not insist that the state of matter depends on our subjective perception of time.

      Solids are crystals, molecules of which keep order on distances much greater then distance between the neighboring molecules.

      Order distance in liquids (fluids) is comparable with the distance between the molecules. And, finally, gases do not have order at all.

      I am not aware that there is any other definition of solids, liquids and gases. OTOH, if you tell me how to tell a liquid from a fluid, perhaps, I'll learn something new.

    8. Re:That's one interpretation by perspicaciously · · Score: 5, Insightful

      The idea that glass is a liquid is something of an urban myth derived in all likelihood from the method in which glass used to be blown.

      In fact, glass is an amorphous solid. If you heat it up enough, it becomes a supercooled liquid.

      The example generally used to explain how glass is a liquid is that in old houses the glass has "flowed" down over time and is thicker at the bottom of the pane than it is at the top. This isn't necessarily true, but when it is it's generally because of the very old Venetian method of glass blowing, before it became common to float molten glass on mercury to get panes with even thicknesses. If glass actually flowed at rates that were visually perceptible even after centuries, then optical telescopes that rely on massive lenses and mirrors to maintain accuracy to fractions of a second wouldn't last very long at all. This isn't the case.

      In short, mythbusted.

    9. Re:That's one interpretation by Anonymous Coward · · Score: 2, Informative

      "If glass actually flowed at rates that were visually perceptible even after centuries, then optical telescopes that rely on massive lenses and mirrors to maintain accuracy to fractions of a second wouldn't last very long at all. This isn't the case."
      Exactly, because noone is so dumb as to use a non-crystalized form of silica in those lenses. The parent is completely correct. Please move along.

  5. Perfect Liquid? by roman_mir · · Score: 4, Funny

    in fact an almost perfect liquid - I knew it! The universe was created from a shot of vodka!

    1. Re:Perfect Liquid? by roman_mir · · Score: 2, Funny

      Vodka...? Pfrrrrt!!! They were talking about BEER, you insensitive clod!!! - nah, everyone knows that beer can only produce parallel universes. The originals always start from vodka!

  6. So Douglas "Hitchhiker's" Adams was right again by michaeldot · · Score: 5, Funny

    The Great Green Arkleseizure Theory

    "According to that most famous of sages, Douglas Adams, the Jartravartids believe that the entire Universe was, in fact, sneezed out of the nose of a being called the Great Green Arkleseizure. They live in perpetual fear of the time they call the Coming of the Great White Handkerchief..."

  7. You mean... by jhurani · · Score: 5, Funny

    ... Astroglide?

  8. Not much of a surprise by onyxruby · · Score: 2, Informative
    cosmic microwave background radiation pretty much dictated this three years ago. Rest of comment is a rip off an article I did for K5 a few years ago that dealt CMB.

    The big bang theory gained more credibility today with some news released by the National Science Foundation and collaborated by a United States team called Maxima with astronomers from the University of Minnesota and the University of California, Berkeley.

    The soundwaves that were found are an impression of quantum scale energy fluctuations carried to earth by cosmic microwave background radiation. Scientists were able to measure the waves by looking at cosmic microwave background (CMB). These early soundwaves are thought to have created super and giant clusters of galaxies with their travel. The soundwaves are actually contained in primordial plasma. They are effectively overtones or harmonics of the big bang explosion that is said to have created the universe.

    These soundwaves are important because they show two things that are important for understanding our universe in addition to solidifying the big bang AKA inflationary thoery.

    # First of note is that the study indicates that the universe is geometrically flat, not curved. # This study also gives credence to the thoery that most of the universe is composed of dark matter.

    The discoveries were made by microwave detectors in Antartica, using baloons. The study involved only about 3 percent of the sky, and looked at temperature fluctuations of only 100-millionths of a degree celcius in the CMB.

    1. Re:Not much of a surprise by bcrowell · · Score: 4, Informative
      You don't know what you're talking about. The material in your post was all known several years ago. The fact that nuclear matter at high temperatures can be a superfluid (not just a normal fluid) is entirely new and unsuspected, and has nothing to do with what you're talking about in your post.

      For anyone who wants to know something about this, from a source that actually knows something, you might want to start with the wikipedia article on the liquid drop model of the nucleus, and then this one on superfluids in ordinary matter (as opposed to nuclear matter). Nuclear matter in its normal cold state (as found in the nuclei in your body) is a fluid (known since ca. 1930), and is also a superfluid. The mechanism that causes superfluidity in the atomic nucleus is in some ways analogous to the mechanism that causes superfluidity in some types of ordinary (very cold) matter. It's also been known for a long time that if you heated nuclear matter up to high temperatures (on the order of MeV's per nucleon), the superfluidity would vanish. This is exactly analogous to what happens if you heat a superfluid like helium-3 beyond a certain point: it undergoes a phase transition and is no longer a superfluid.

      This new discovery is completely unexpected: if you heat nuclear matter even hotter (to on the order of GeV's per nucleon) it may somehow become a superfluid again (maybe depending on other variables, like pressure). This is the regime where everything is moving at relativistic speeds, and the quarks may actually be free to move around the whole fluid, rather than being bound in sets of three within individual nucleons.

  9. For the scientific atheists... by Anonymous Coward · · Score: 3, Interesting

    Genesis 1
    -------------
    3: And God said, Let there be light: and there was light
    ...boom...
    6: And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters.
    "the quarks and gluons behaved as a liquid - in fact an almost perfect liquid."
    "The Universe is believed to have been in this state in the first microsecond after the Big Bang"
    9: And God said, Let the waters under the heaven be gathered together unto one place, and let the dry land appear: and it was so.
    "Later the quarks and gluons were trapped in the nuclear particles that the visible universe is composed of today"

    Almost enough to make one a scientific believer. Finally, science is coming close to the Truth!

    (Please mod +5 troll lol)

  10. "Data Suggests Early Universe was Superfluid" by TCM · · Score: 5, Funny

    Splendid, Mr. Data. Continue with your research. Dismissed.

    --
    Of course it runs NetBSD. BTC: 1NT7QvbetmANwaMzhpVL6
  11. Re:I hate to sound like I'm trolling... by Rude+Turnip · · Score: 5, Insightful

    Keep in mind that there have been mathematical formulas hanging around for over 500 years that were utterly useless until technology caught up and we found something practical to do with them. Science isn't about what you can use today...you take what you get when you make discoveries.

  12. Re:I hate to sound like I'm trolling... by Harish+Rallapali · · Score: 2, Informative

    Obviously nobody profits from the fact that at one time, for a very brief period, the universe acted a little funny.

    However, this has important ramifications in terms of physics. We now know the "what" and "when" - now we need to learn the "why" and "how." Knowledge is never wasted. This may very well be the first baby-step towards warp drive and gravity guns :-)

  13. Re:I hate to sound like I'm trolling... by Wordsmith · · Score: 4, Insightful

    Seeking knowledge for knowledge's sake is a worthwhile endeavor. Every new piece of information leads to a greater understanding of the big picture.

    Besides, "useless" knowledge often proves key to unintendend, unsought, useful advances.

  14. Liquids and Gasses are Fluids by theblacksun · · Score: 4, Informative

    The term fluid applies to both states of matter. I'm thinking the proper term for the universe would be superliquid.

    --
    Ignorance kills, complacency kills, hatred kills, but usually not the ones guilty of them.
    1. Re:Liquids and Gasses are Fluids by RaffiRai · · Score: 2, Informative

      Indeed, the definition of fluid also includes Plasmas and some plastic solids.

      The simple high-school chemistry definition is matter with no definite shape.

      Wikipedia article here.

  15. This ain't superfluid, dammit. by caffeinated_bunsen · · Score: 4, Informative
    First the nanotube article, which made the mistake of thinking "really good conductor == superconductor" and now "really low-viscosity fluid == superfluid."

    Superfluid means more than low viscosity. Specifically, it indicates that the fluid is a degenarate Bose system, which the quark-gluon whateverthefuckitis is not. But the article submitter probably reads science articles in Wired and the NYT, and thinks he can throw the cool-sounding jargon around without anybody noticing that it's bullshit.

    --

    Bugrit! Millenium hand and shrimp!
    1. Re:This ain't superfluid, dammit. by bcrowell · · Score: 4, Informative

      Specifically, it indicates that the fluid is a degenarate Bose system, which the quark-gluon whateverthefuckitis is not.
      Some superfluids are degenerate Bose systems, e.g., helium-4. But some are fermionic, e.g., helium-3, or nuclear matter in its ordinary (cold) state.

    2. Re:This ain't superfluid, dammit. by Quantum+Fizz · · Score: 3, Informative
      The slashdot writeup uses the wrong terminology, but it's a similar concept. So whoever put the title as 'superfluid' was mistaken and should have written 'perfect fluid'.

      A superfluid refers to a viscosity-less fluid. The most common being He4, which is easy to produce, just cool liquid helium down to about 2.2K. This has to do with the quantum interactions between the helium atoms, and is similar but different to a Bose-Einstein Condensate. The He4 atoms have an even number of fermions (two protons, two neutrons, 2 electrons) and act like Bosons. Ie, they aren't restricted to Pauli Exclusion principle, and can all be in the same state.

      Another superfluid can come from He3, a rarer isotope of helium. The He3 atoms themselves, now having an odd number of fermions, act like fermions, and obey Pauli Exclusion. However, at cold enough temperatures (a few mK) they can pair together, thereby acting like a Boson, and can also form a superfluid. This is a process fairly similar to the Cooper pairing of two electrons in a superconductor (in the superconductor the normally repulsive electrons are paired through a phonon interchange mediated through the material's lattice).

      Now regarding the quark-gluon soup, the physicists are talking about a perfect fluid. I just saw a physics colloquium by one of these researchers a few weeks ago, and unfortunately I don't remember the details. But basically if you take a ratio or some other mathematical function of the viscosity and another hydrodynamic parameter I can't remember, like surface tension or something, in a perfect fluid these approach some standard value such as unity or zero or some such. (this confuses me now because the ratio in question is either zero or infinity if a helium superfluid viscosity is exactly zero, so this is why i am hesitant to say anything definitively about which mathematical function or quantities are measured).

      No such perfect fluid is known to exist, and of all known fluids the closest one can come to it is a cryogenic superfluid, which has a value like 4 or 4pi or something like that. All other known fluids have this value substantially larger.

      Regarding the quark-plasma soup, I believe the speaker said this wouldn' necessarily display the same properties of a quantum superfluid, maybe not perfect viscosity, I really don't remember exactly. I was trying to talk to him a bit afterwards, but I didn't know enough about the physics of superfluidity to really get into the details.

  16. Mmm... by Fjornir · · Score: 4, Funny

    Why you whippersnappers! I remember before we had Data suggesting superfluid universes we had Spock. Spock was always solid and reliable. Spock taught us how to be people none of this gibberish about the beginnign of universes... Why at Amok Time he said, ""It is undignified for a woman to play servant to a man who is not hers." -- and that's as true now as it was then.

    --
    I want a new world. I think this one is broken.
  17. Re:light travel problem by Anonymous Coward · · Score: 2, Informative

    I'll bite.

    The universe is not 6.8 billion years old. It's far older and the proof is our sun. Sol is a third generation star, its makeup is proof in that it's a meager yellow dwarf which will grow large then collapse into a white dwarf. Its parent and grandparent detonated in an amazing supernova which led to the ignition of Sol.

    The fact that our solar system is full of heavier elements is proof of our sun's age and lineage. Each atom of lithium, carbon and iron was created in the heat of a supernova.

  18. We call it a Trillion by Overzeetop · · Score: 4, Informative

    Yes, thousands of Billions, because people are too stupid to know that the word Trillion exists?

    Well, now I know why nobody is worried about the US national debt. 7 Trillion is, like, practially nothing. Let me know when we get to 7000 Billion and I'll start getting worried. And don't tell me that millions of millions crap - it just gets confusing. Besides, a million isn't as much as it used to be. Inflation, you know.

    Hint: after Trillion, the next is Quadrillion, and then (hold you breath) Quintillion. Gosh it's, like, a pattern!

    --
    Is it just my observation, or are there way too many stupid people in the world?
    1. Re:We call it a Trillion by Anonymous Coward · · Score: 2, Informative

      Not to us brits. Our have a different naming scheme, that counts by factors of 6 after a factor of 18, as opposed to by factors of 3 after 3.

      109 - millard (billion)
      1018 - billion (quintillion)
      1024 - trillion (septillion)

      And so forth.

      You insensitive clod!

    2. Re:We call it a Trillion by rossdee · · Score: 2, Funny

      "Hint: if you're not american, after billion comes billiard."

      And what comes after Billiards?

      Snooker ?

    3. Re:We call it a Trillion by sbryant · · Score: 3, Informative

      10^9: Millard (not commonly used)

      Not in English so much, but very common in German. A billion in Germany is always 10^12, and never 10^9.

      Damn those 17th century Frenchies for changing the 200 year old long scale to the short scale, I say! Well, the Germans may not be known for their humour, but they are very good engineers, and they don't like their mathematical standards being changed. Actually, the Americans only changed because they were on better terms with the French than the British after their revolution.

      I wasn't aware that the official scale in the UK and Oz had been changed, but when I did physics and maths at school, we never used "million" or "billion" as terms - we always had to specify large numbers like this: 1.234 * 10^12.

      Here's a link with more info on the subject.

      -- Steve

  19. Re:I hate to sound like I'm trolling... by millennial · · Score: 5, Interesting

    What's even more interesting is the concept that Stephen Hawking and others refer to as 'imaginary time.' Since, as you point out, time expanded alongside space, we can't really measure how old the universe is, since it may be infinitely old from any vantage point within it. (If space was ever infinitely small, then real time is infinite.)

    The 'microsecond' referred to here would be imaginary time. Not imaginary as in 'imaginary numbers' (which don't technically exist but are still useful), but imaginary as in non-relativistic. In other words, the entire process could occur in a microsecond if we reproduced it today, but in relativistic time, it may have, as you said, taken eons.

    --
    I am scientifically inaccurate.
  20. Re:Universe by Anonymous Coward · · Score: 2, Informative

    The Friedmann equations which form the basis for standard cosmology in general relativity, treat the universe as a perfect fluid, a non-interacting medium characterized by only its density and (isotropic) pressure (the Weyl postulate). Basically, it treats whole galaxies as "particles" in a "cosmological fluid".

  21. Yeah? Well the white smoke suggests... by spankey51 · · Score: 2, Funny

    Yeah Ted? Well there is a new Pope in town... And he is pissed! You have, as of late, chosen to acknowledge the existance of: 1- Quarks, 2- Gluons, 3- the scientific method, and worst of all: 4- the "big bang." You are a witch and will be prosecuted as such... just as soon as everyone gets back from the Imax theater.

    --
    -ubuntu others as you would have others ubuntu you.
  22. Numbers are naughty!!! by ErikTheRed · · Score: 2, Funny
    Hint: after Trillion, the next is Quadrillion, and then (hold you breath) Quintillion. Gosh it's, like, a pattern!
    You didn't even go to sextillion! If the drier technical definition is hard to grasp, just think of a sextillion as being the amount of pr0n on the 'net.
    --

    Help save the critically endangered Blue Iguana
  23. Supersolids by Anonymous Coward · · Score: 5, Informative

    However, it may well be possible for solids to exhibit superfluid flow. How? Imagine the flow of a liquid, except that all the atoms in the liquid have a crystal structure, and that entire structure is flowing in lockstep while maintaining a rigid crystalline structure. When Bose-Einstein condensation comes into play, you can have macroscopic coherence of atoms across the entire bulk of material.

    Kim and Chan at Penn State claim to have created a supersolid state of matter in helium (and now, hydrogen). It's arguably the biggest experimental result in condensed matter physics right now; if confirmed, it will probably mean the Nobel Prize. However, theoretical studies have so far failed to unambiguously predict the existence of such as state of matter; there are arguments for and against, and the dust hasn't settled. If other experimental groups can replicate these results, we'll know for sure, regardless of whether theory has caught up with nature.

  24. Re:Black holes also being created at RHIC? by Baatezu · · Score: 2, Informative

    Tiny black holes couldn't be earth devouring. A black hole is a mass that has shrunk to the point to where escape velocity is greater than the speed of light. So a tiny black hole that was, say comprised of 200kg, would have no moure earth devouring ability (gravitationally) than a 200kg person.

    if the sun instantly shrunk to a black hole, there would be no change in the earths orbit, or any of the planets, the gravitational pull would be _exactly_ the same as before.

    Just some clarification on what a common misconception of blackholes being 'devouring' objects.

  25. Re:Question? by TheBurrito · · Score: 2, Informative

    Entropy. Over cosmic scales, clumping together becomes the lower energy state due to gravity's small but extremely wide-ranging effects.

  26. Think logarithmically by Lapsed+Catholic · · Score: 5, Insightful

    I'm serious. What is the scientific benefit that we can gain from understanding what the universe was like for a microsecond? I'm honestly curious: is there a practical application to this sort of study?

    To understand this you first need to abandon your familiar linear timescale, and learn to think about time logarithmically. This is also important for understanding particle decay times as well- strange particles were originally called "strange" because they hung around for 10e-10 seconds instead of the usual 10e-15 to 10e-20 seconds for particles based on up/down quarks. If particle physicists were thinking on a linear timescale, they would just say "gee all these particles are gone in a jiffy!" and we wouldn't have strange quarks today- with all their accompanying technological advantages!

    Remember, the few billion years that the universe has been around is going to seem like a really short time 10e60 years from now. The slow-moving beings of that era are going to post to their discussion boards asking why anyone would care about what the universe was like for its first 10e10 years.

  27. "in fact an almost perfect liquid." by Craig_P92669 · · Score: 2, Funny

    Tequila?

    --
    http://xs4.xs.to/pics/04481/p556222.gif
  28. Mod parent down - incorrect. by dr.+loser · · Score: 4, Informative

    The parent comment is a non-sequitor.

    The CMB results have very little to do with the Brookhaven RHIC results. The CMB uniformity tells you nothing about the hydrodynamic properties of the quark-gluon plasma. The CMB does tell you about the electron-nucleon plasma that happened later.

    And yes, I am a physicist.

  29. Re:Nope by the_2nd_coming · · Score: 2

    yeah.. umm.. see.. we have, as a society, moved beyond meta-physics and into real physics. thanks for playing though.

    --



    I am the Alpha and the Omega-3
  30. Re:I hate to sound like I'm trolling... by pipingguy · · Score: 3, Funny


    What's even more interesting is the concept that Stephen Hawking and others refer to as 'imaginary time.' Since, as you point out, time expanded alongside space, we can't really measure how old the universe is, since it may be infinitely old from any vantage point within it. (If space was ever infinitely small, then real time is infinite.)

    I've been wanting to get paid for this imaginary time for decades, but somehow various employers haven't approved the timesheets. And they've not bought into the idea that I've been solving their problems on the existential plane and working while sleeping (or travelling to work). Then again, I don't have a Ph.D.

    Fucking ungrateful bastards.

  31. 1 trillion by doppe1 · · Score: 4, Informative
    From trillion

    We are all agreed that 1 million = 1x10^6.

    In the world (Britain, France, and Germany) where 1 billion = 1 million million (1x10^12), then 1 trillion = 1 million billion (1x10^18) or another way 1 trillion = 1 million million million (tri-million), or million cubed, to the power of three, as in tri.

    In the parts of the wolrd (US & Canada) where 1 billion = 1000 million (1x10^9), then 1 trillion = 1 million million (1x10^12) so 1 trillion = 1000 billion.

    As it is an American lab, it will be 1x10^12.
    Personally, i feel the Americans just like their numbers sounding bigger.

    1. Re:1 trillion by leehwtsohg · · Score: 3, Interesting

      To make things more interesting, german also has "milliarde", "billiarde", "trilliarde"
      milliarde = 1000 million (UK) = 1 billion (US) = 10^9
      billiarde = 1000 billion (UK) = 1 quadrillion (US)= 10^15
      trilliarde = 1000 trillion (UK) = 1 sextillion= 10^21

      (It seems that this is also sometimes used in english - milliard, billiard, triliard(?))

  32. The Bible says so by terminal.dk · · Score: 3, Funny

    Isn't that what The Holy Bible say ? First that was nothing, then there was water, then land.

    Guess the aliens that left the bible on earth was more advanced than we are

    1. Re:The Bible says so by Moraelin · · Score: 2, Insightful

      Even then, I doubt that the big bang is what the bible referred to.

      See, the Big Bang was more like, first there was liquid, then there was GAS (a step utterly missing in the bible), then there was liquid again as gravity collapsed clouds of hydrogen, then there was plasma as the star ignited, then it went bang and it was gas again... and only after a few more such cycles you had enough of the heavier elements to have land as we know it.

      Besides, the last time I've read the bible it was more about Earth than about the universe as a whole.

      Don't get me wrong, you can fit the Genesys is a lot of funny ways into the history of Earth. (My own pet theory is that God was a student, seein' as he did it all in the last 7 days.) But fitting the Big Bang in it is just not supported by _anything_ in the bible.

      --
      A polar bear is a cartesian bear after a coordinate transform.
  33. Re:Black holes also being created at RHIC? by evanbd · · Score: 2, Informative
    Hmmm. I'm pretty sure that there's a (theoretical) limit - once your black hole is smaller than an atom, well, it doesn't really bump into too much.

    You're halfway there, but for the wrong reason. A tiny black hole just bumps into atomic nuclei less frequently, since it is sitting in a big pool of them (the Earth, since it fell out of whatever created it).

    The problem with all this, however, is that tiny black holes evaporate, and therefore won't stick around very long. Physics collider ones don't stick around long enough to leave the vacuum chamber, let alone fall through the floor. See also Micro black holes.

  34. Re:I hate to sound like I'm trolling... by Barlo_Mung_42 · · Score: 2, Interesting

    For now it's more of a philosophical curiosity than anything else. The search for the answer to the question of where this all came from.
    Look how many people in this thread posted some reference to Genesis. It's the same search in a way. But instead of just making it up or believing in the made up, this method tries to find some data to back the answer up with.

  35. Re:I hate to sound like I'm trolling... by xPsi · · Score: 2, Interesting
    The question is a fair one. First, I claim that understanding the universe is probably itself a pretty reasonable pursuit. But philosophy aside, the goal of the RHIC experiments is not primarily to study the early universe (although that is a natural consequence of what they are doing). The main goal is to study bulk nuclear matter under extreme conditions. "Bulk" in this context meaning "whole nuclei" as opposed to just a couple protons or quarks. "Extreme" meaning ultrarelativistic (v~c) collisions. That is, in effect, to study the phase diagram of nuclear matter (as opposed to "atomic matter", the usual stuff we do chemistry with) by heating it with violent collisions (the temperature of this fluid is estimated to be about a trillion degrees C).

    In principle, understanding the fundamental nature of nuclear matter could have tremendous technological consequences -- in principle. Direct technology from perfect partonic fluids will probably not happen in five years but perhaps in twenty, fifty, or one hundred years. In the mid-to-late 19th century, people asked the same sorts of question the parent is asking about electricity and magnetism: "what's it all good for anyway." I think we all know where that went. The Department of Energy in the US, the main benefactor of the RHIC project, generally supports this sort of basic research precisely because it often leads to huge technological breakthroughs.

    But it isn't just a pipe dream of future technology that drives the DOE. They know that in the process of simply trying to do something as crazy as finding a quark-gluon plasma or a perfect partonic fluid involves learning a lot of new stuff about existing technology and pushing it to its limits. You have to build massive detectors, huge computing facilities, and have ultra-fast electronics to handle the data rates. You also need to educate, train, and employ thousands of Ph.D.'s -- a sure way to ensure some fraction of the population are trained scientists. All of this drives technology in big ways the private sector just can't afford to do -- precisely because there is no profit involved in this kind of dabbling. But in the end everybody wins because even if perfect partonic fluids never become useful, the technology needed to figure that out trickles down perhaps contributing to vastly to future technology.

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    i\hbar\dot{\psi}=\hat{H}\psi
  36. ...Not The biggest Collider by polemon · · Score: 2, Informative

    The statement "The biggest collider" is not correct, a simmilar installation, but by ways larger is the CERN in Genf (Switzerland). The LHC (Large Hadron Collider) measures about 7 Kilometers, or 4.34 Miles in Circumference. According to the CERN Website, a new gigantic collider is planned, that will measure incomprehensable 49 Kilometers in circumference. Another new hadron collider is the TESLA Installation in Hamburg (Germany). It will be a Tandem linear Collider, with it's origin in the DESY complex, wich is a pretty large Research installation itself, check their Website.

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