Slashdot Mirror


Work Progresses On 10,000 Year Clock

KindMind writes "CNet has pictures of a planned 10,000 year clock to be built in eastern Nevada by the Long Now Foundation. From the article: 'Running under its own power, the clock is an experiment in art, science, and engineering. The six dials on the face of this machine will represent the year, century, horizons, sun position, lunar phase, and the stars of the night sky over a 10,000-year period. Likely to span multiple generations and evolutions in culture, the thinking and design put into the monument makes it a moving sculpture as beautiful as it is complex.' This was reviewed on Slashdot in 2005. Really cool pictures, including one of a mechanical 'binary computer' that converts the pendulum into positions on the dial."

75 of 307 comments (clear)

  1. Ten thousand year waranty by MyLongNickName · · Score: 5, Funny

    I betcha it breaks 6 months after the warranty expires.

    --
    See my journal for slashdot ID's by year. Mine created in 2005. http://slashdot.org/journal/289875/slashdot-ids-by-year
    1. Re:Ten thousand year waranty by MikeOtl67of · · Score: 4, Funny

      I betcha it breaks 6 months after the warranty expires.

      No worries, you would have lost the receipt!

    2. Re:Ten thousand year waranty by EkriirkE · · Score: 4, Funny

      "...under this extended 999 year warranty. We also insist on diamond encrusted gold monster ball bearings for a much more accurate time keeping."

      --
      from 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0
      to 45 2F 6E 40 3C DF 10 71 4E 41 DF AA 25 7D 31 3F
    3. Re:Ten thousand year waranty by Cynonamous+Anoward · · Score: 2, Funny

      Who the hell would go through the trouble of gold plating and diamond encrusting a monsters balls? sheesh, there are some bored motherf****rs out there...

      --
      "The GPL is viral by design, like any good religion."
    4. Re:Ten thousand year waranty by EkriirkE · · Score: 2, Funny

      The Japanese.

      --
      from 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0
      to 45 2F 6E 40 3C DF 10 71 4E 41 DF AA 25 7D 31 3F
    5. Re:Ten thousand year waranty by Anonymous Coward · · Score: 2, Funny

      "diamond encrusted gold monster ball bearings"

      10 years later, after the next world war, the remaining cave men will (after a few thousand years living in caves) emerge once again, whereupon the tribal elders will use the shiny gold monster balls as symbols of great power and allow them to lead massive armies to great victories and wondrous monuments will be built to honor such wondrous achievements. Future generations will build on the wondrous achievements of their forefathers, until one day ...

      20 goto 10

  2. ha ha ha by grub · · Score: 5, Interesting


    This modern-day Stonehenge will be scavenged for parts and resources long before 10,000 years. Much like how the original Stonehenge was.

    --
    Trolling is a art,
    1. Re:ha ha ha by evanbd · · Score: 3, Interesting

      That's why one of the design considerations is avoiding valuable materials. This is nontrivial -- materials with good corrosion and wear resistance tend to be pricey. Obviously the clock won't be made of anything as low value as stone, but it is a consideration.

    2. Re:ha ha ha by pz · · Score: 5, Informative

      That's why one of the design considerations is avoiding valuable materials. This is nontrivial -- materials with good corrosion and wear resistance tend to be pricey. Obviously the clock won't be made of anything as low value as stone, but it is a consideration.

      It's a big problem: build something pretty, and it becomes an object of desire, even to have a small part, and people will take. Build something that will last a long time, and it needs to be resistant to weathering, and therefore valuable, and people will take. Build something that has a function, it will be a source of political power to control it, and people who do not control it will try to destroy it. The engineering is only one part of the problem.

      The other thing I worry about is that the design tolerances are going to be difficult to maintain. Anything that will last 10,000 years will experience seismic activity, no matter where you put it. Few large structures can withstand being shaken while retaining high tolerances. I've spent a fair bit of my youth around buildings that were only 2500-3000 years old (in Greece), and by and large, they were not in very good condition, even when not scavanged for building materials. We do not understand how to build structures to resist corrosion and weathering on millenial time scales -- that does not mean we shouldn't try, just that we aren't good at it, yet.

      --

      Put my fist through my alarm clock with its ding-dong death inside my ear. - The Blackjacks.
    3. Re:ha ha ha by mangu · · Score: 3, Informative

      We do not understand how to build structures to resist corrosion and weathering on millenial time scales -- that does not mean we shouldn't try, just that we aren't good at it, yet.

      We *didn't* understand that thousands of years ago. Today we have much better materials. Nickel, for instance, is much harder and more resistant to corrosion than the bronze that was used in ancient Greece. Marble and sandstone will show significant wear in a few decades if used in stairsteps, no wonder those old buildings are so worn out.

    4. Re:ha ha ha by jmichaelg · · Score: 5, Insightful

      If they form a monastery around the clock it may survive. The monastery need not be religious, it just needs people who are willing to carry on the original vision. I'd bet there are enough people who would be willing to donate a year, or more, of their lives to maintaining something that was designed to last 10,000 years. A sort of "carrying the flame" kind of altruism. The monastery would be devoted to seeing that we don't forget how to manufacture things and as part of its mission, it could be continually rebuilding the clock. The Japanese have some Shinto temples they've routinely destroyed and rebuilt every 20 years.

    5. Re:ha ha ha by Hurricane78 · · Score: 5, Interesting

      There is a great solution to this: Just make it totally deadly radioactive for the next 10,000 years. ^^
      If it were me, who had to build it, I would do exactly that. I would make the only way to look at it, to use binoculars. With a large deadly zone around it. I would make it so radioactive, that it would glow in the night, for the first 1000 years or so. I would make it a legend. Something that is above religion. Above governments. Something that the two sides of the biggest war in those 10,000 years will value so much that they could never destroy it. And the radioactivity would keep more primitive thieves off of it.

      --
      Any sufficiently advanced intelligence is indistinguishable from stupidity.
    6. Re:ha ha ha by T-Bone-T · · Score: 2, Insightful

      Stone is low-value. We use it only in certain building applications and low-value decoration and we have lots of it and know where to find lots more. The only reason ancient buildings were scavenged is because stone was the primary building material during those times.

    7. Re:ha ha ha by juancnuno · · Score: 2, Informative

      One of the conscious goals is to make it from cheap, plentiful, or otherwise unattractive-to-thieves materials.

    8. Re:ha ha ha by pz · · Score: 4, Informative

      We do not understand how to build structures to resist corrosion and weathering on millenial time scales -- that does not mean we shouldn't try, just that we aren't good at it, yet.

      We *didn't* understand that thousands of years ago. Today we have much better materials. Nickel, for instance, is much harder and more resistant to corrosion than the bronze that was used in ancient Greece. Marble and sandstone will show significant wear in a few decades if used in stairsteps, no wonder those old buildings are so worn out.

      You're proposing to build stairs out of nickel? The Ancient Greeks were actually really good architects and civil engineers. Quite very good, if you take the time to study their techniques. There are buildings that are largely intact and have not moved, one stone relative to another, more than 1cm or so, over 3000 years (the Mycenean behive tombs), but they are rare among the buildings that still remain. These are just the buildings, I'm talking about, walls, floor, sometimes roofs. Forget complicated, moving mechanisms.

      We are currently building few, if any, structures that are intended to last at the century scale. Most built form is intended to last at the decadal scale. We utterly lack expertise at the millennial scale -- although, as stated above, that does not mean we should not TRY. Just that it's hard.

      And I'm not convinced at all that we have superior materials now than we did 2000 years ago for this purpose. Steel? Won't last. Stainless alloys? Corrosion still builds up over long time scales, and it's too valuable. Nickel? Valuable. Aluminum alloys? Still corrode. Valuable. Etc.

      The only materials that won't oxidize at those time scales are those that are already oxidized. SiO2 (quartz, glass). CaCO3 (marble). FeOx (oxidized iron, but it's structurally worthless).

      --

      Put my fist through my alarm clock with its ding-dong death inside my ear. - The Blackjacks.
    9. Re:ha ha ha by DerekLyons · · Score: 2, Insightful

      They had lots of stone and knew where to get more back then too... The reason ancient buildings were scavenged was because the stone was already cut to a manageable size, and was generally handily located.

    10. Re:ha ha ha by mangu · · Score: 2, Interesting

      And I'm not convinced at all that we have superior materials now than we did 2000 years ago for this purpose.

      What about this mechanism? If it had been built of modern corrosion-resistant alloys it would still be working today.

      Steel? Won't last. Stainless alloys? Corrosion still builds up over long time scales,

      Iron meteorites are a natural stainless steel and last millions of years. Although iron meteorites are only about 6% of the total that fall on earth, about 90% of collected meteorites are iron, they are so much more durable than stone meteorites.

    11. Re:ha ha ha by mangu · · Score: 2, Interesting

      I'm not familiar with meteorite dating: do we have evidence for ones that fell millions of years ago?

      Here's one that has been dated to a fall on earth 110 million years ago. It's corroded, not much of the original mass remains, it's true, but it's something like four orders of magnitude older than any known bronze artifact.

      I mean, you realize that calling it stainless steel doesn't necessarily mean it is 100% corrosion-free, right?

      You know, "stainless" is a name applied to thousands of different alloys. And there are so many different corrosive mixtures. Some perchlorates will eat through any metal. With a 1000 degrees centigrade air flow blowing on it any steel will rust. But there are many alloys that will sit quite happy in an autoclave without getting rust marks. Try Hastelloy B, for instance.

  3. How about a non-powered clock? by davidwr · · Score: 4, Interesting

    How about a non-powered clock that used the positions of the sun, moon, and stars to tell the time?

    We already have a version? that works for about half a day in most parts of the world, and 24 hours during the summers near the poles.

    Another option:
    A clock that simply reads the remaining amount of radioactive material in a sample. Use the radiation to drive the device.

    --
    Knowledge is how to play a game, intelligence is how to win, wisdom is knowing what game to play.
    1. Re:How about a non-powered clock? by StevenMaurer · · Score: 3, Informative

      It sounds like a good idea, but because of precession of the Earth orbital axis, a sundial becomes inaccurate over the course of even a couple hundred years. Everything from Mayan ruins (which were originally lined up with the sun), to astrological signs (which originally stood for the period of time when a certain constellation was covered by the sun) have been made inaccurate by this effect.

    2. Re:How about a non-powered clock? by evanbd · · Score: 2, Insightful

      Reading the amount of radioactivity in a sample to a precision of even 1 day in 3.6 million is nontrivial. Doing it with a device that will survive 3.6 million days while being exposed to said radiation is even more so.

      Building a clock that lasts 3.6 million days is not a project for a single day, let alone the five minutes spent on a slashdot comment.

    3. Re:How about a non-powered clock? by BlueParrot · · Score: 2, Interesting

      Reading the amount of radioactivity in a sample to a precision of even 1 day in 3.6 million is nontrivial. Doing it with a device that will survive 3.6 million days while being exposed to said radiation is even more so.

      Building a clock that lasts 3.6 million days is not a project for a single day, let alone the five minutes spent on a slashdot comment.

      36-Chlorine has a half-life of 30 000 years, decaying into either stable Sulfur-36 or Argon-36. Since the ratio of decay events that result in Argon-36 is known the sample could be prepared as to let the Argon diffuse away, thus causing a predicable loss of mass of the sample. Part of the container could then be built as to allow noble gases to diffuse out, but not let anything else in. The problem is then reduced to that of constructing a mechanical balance of sufficient accuracy as to weigh the reduction in mass of the sample. Designing a balance with sufficient accuracy and longevity would no doubt be a challenging task, but at least there is no requirement for any rapidly moving parts, thus substantially reducing wear and tear.

    4. Re:How about a non-powered clock? by evanbd · · Score: 2, Informative

      We don't know how to build a reference mass that is accurate to even 10 ppm over a century. You're asking for a mass that is accurate to (about) 0.05 ppm over 100 centuries if you want the clock to be accurate to a single day at the end of those 100 centuries. Furthermore, you want it to be built not from a high-stability noble metal alloy, but from a radioactive, reactive gas. And you want to maintain this stability without even doing the best job you know how of isolating it from its environment, but instead to have it communicate in a defined manner.

      In short, I think radioactive decay is a problematic method of measuring time -- even for less chemically active isotopes and non-mass-based measurement techniques.

  4. Re:10,000 years by Tx · · Score: 5, Interesting

    For the clock, or for the human race?

    --
    Oh no... it's the future.
  5. Re:Errr by thedonger · · Score: 3, Insightful

    As opposed to a non-binary computer?

    Sometimes the term 'computer' does not literally mean the electronic thing plugged into the wall under your desk running Linux.

    --
    Help fight poverty: Punch a poor person.
  6. Re:Errr by Tx · · Score: 5, Informative

    As opposed to a non-binary computer?

    Yes

    --
    Oh no... it's the future.
  7. Inspiration for "Anathem" by StefanJ · · Score: 4, Informative

    Neal Stephenson's novel Anathem was inspired by the work and philosophy of the Long Now Foundation.

    In brief: The narrator and many of the characters are members of a scholarly order which separates itself from the distractions of the outside world. Their monk-like existence is bound by many rules and rituals. Many of these center around the "winding" and tending of an immense clock.

    Not a book for everyone, but I found it entertaining and intriguing.

    1. Re:Inspiration for "Anathem" by Opyros · · Score: 2, Informative

      Whoever said "any book with more than 3 made-up words in it isn't worth reading" was right.

      It was Randall Munroe who said it — and look at what his mouseover text says.

  8. A 54 years old 25,753 year mechanical clock exists by Gnavpot · · Score: 4, Informative

    This mechanical clock was completed 54 years ago. It has a 25,753 year cycle.
    http://en.wikipedia.org/wiki/Jens_Olsen's_World_Clock

    (And it had to be completely renovated after 40 years...)

  9. The End is Near by travdaddy · · Score: 4, Interesting

    Just think, if this thing really works, then we've created another day where everyone will stockpile cans of food and hides in the cellar! "The Ancient Americans knew this clock would only need to be accurate for 3.65 million days!"

    If you doubt that will happen, take a good look at the Mayan calendar.

    --
    Adidas To Bring Back Sneakernet
  10. Re:Wow... by totalg33k · · Score: 3, Informative

    IIRC, from the 2005 article: it will be built as far from civilization as possible so "that will help people forget about it and avoid the contempt of familiarity."

  11. 12009 by Lakitu · · Score: 5, Funny

    THE WORLD IS GOING TO END IN 12009

    THE AMERICANS PREDICTED IT

    1. Re:12009 by Chris+Burke · · Score: 5, Interesting

      Lol, yeah, I can even see that happening.

      Plus, if I understand the device, then it's powered by a couple huge weights slowly falling down a screw. Whatever future society encounters it may not fully understand it, and based on the "Doomsday myth" might assume something is supposed to happen when the weights reach the bottom. There'll be a whole society of people who want to find out, and on that auspicious day they'll travel up to the mountain and have a big party and sit around speculating what'll happen. Will a secret passage open up containing the wisdom of the ancients? Will the whole thing collapse as if mimicking the destruction that will soon engulf the world? Then the moment finally comes, the bells sound one final time, the weights settle at the bottom of the machine... and it stops moving. That's it. They wait around for a while, but still nothing happens. They all leave, and one is heard to mutter "Whoever these Society of the Long Now people were, they're a bunch of jerks."

      --

      The enemies of Democracy are
    2. Re:12009 by plsander · · Score: 3, Funny

      So we need to design it so that a door opens and a sign pops out saying some form of "Ha!"

  12. Perpetual motion by piripiri · · Score: 2, Interesting

    Running under its own power

    Perpetual motion ?

  13. Re:Leap Seconds by flaming+error · · Score: 4, Insightful
    > I wonder, does it account for leap seconds and the slowing rotation of the Earth?
    Try reading TFA:

    Due to the elliptical orbit of Earth, variations in the absolute time kept by the pendulum and solar time can vary by as much as +/- 15 minutes each year. The Equation of Time Cam measures the difference in these two times and recalibrates the clock, while also correcting for the Earth's axis wobble and 1 second per century decrease in speed.
    ...
    Sunlight striking a wire will allow this solar synchronizer to make minute adjustments and realign the clock's absolute time pendulum with true solar time.

    > someone's going to look foolish in a few thousand years when their clock is off.
    That's wrong at so many levels, but I'll just say that it's better to miss a few seconds over 10,000 years than to miss your life by doing nothing with it.

  14. Re:Wow... by robthebloke · · Score: 2, Funny

    Mars?

  15. Re:Errr by whizzard · · Score: 4, Interesting

    As opposed to a non-binary computer?

    Also, yes.

  16. Tower of the Winds is not 10,000 years old by CodeBuster · · Score: 4, Informative

    The Tower of the Winds, the public mechanical calendar/sundial in the old Roman agora in ancient Athens, was probably not more than a few hundred years old before it was stripped for parts, looted, and converted into the bell tower for a former Byzantine Christian church. If history is anything to go by, then this mechanism will also be broken up and destroyed long before 10,000 years have passed.

  17. Re:10,000 years by evanbd · · Score: 4, Insightful

    Perhaps if more people stopped to consider the future that far in advance, our odds would improve. And perhaps the mere existence of such a clock would encourage a few to do so.

  18. Re:10,000 years by TheRedSeven · · Score: 3, Interesting

    Anyone else wonder if, just a mere two thousand years from now, some future country will discover this and wonder what it is?

    Just look at the Antikythera Machine.

  19. Re:Disclaimer: Not Related to End of Time by Camann · · Score: 2, Interesting

    Do you really expect people to remember that for 9,000 years? By then, I expect the "Not" to have worn down or maybe the whole thing... When asked, people will first relate, "Oh, that said, 'Not the end of time'." which will be remembered as, "Something about the 'end of time'." passed on simply as "End of Time" and eventually will become the name of the clock: "End of Time Clock"

    --
    I can't believe you don't know what a Hasemalphaginnojinglanaporphomism is.
  20. Re:The solution is clear by idontgno · · Score: 2, Funny

    Again, we're talkin' Best Buy here. The basic warranty is 90 days. The extended warranty for the rest of the 10,000 years cost $OMGTHATSALOTOFMONEY.

    And they won't sell you the clock without the warranty. "Nope, sorry, fresh out, we got a really small allocation from the distribution center. I think you passed the guy who bought the last one walking out of the store as you were walking in. Check at the other store (20 miles) across town. Kthxbye."

    --
    Welcome to the Panopticon. Used to be a prison, now it's your home.
  21. Re:10,000 years by Java+Pimp · · Score: 4, Funny

    In 10000 years after humans are long dead and gone and it has finally wound down its readout will show simply "42".

    --
    Ascalante: Your bride is over 3,000 years old.
    Kull: She told me she was 19!
  22. Re:10,000 years by tjstork · · Score: 3, Funny

    Perhaps if more people stopped to consider the future that far in advance, our odds would improve. And perhaps the mere existence of such a clock would encourage a few to do so.

    Ah that's crazy. Any year now, the Yellowstone supervolcano is going to blow, and there's not a damn thing we can do about it. The world will be plunged into a dark ice ages, and that will be the end of us.

    --
    This is my sig.
  23. Re:10,000 years by Anonymous Coward · · Score: 5, Funny

    For example, the Mayan clock has a digit rollover in December of 2012, and that kind of forward thinking has allowed the Mayans to become one of the dominant cultures in the Western... oh, wait.

  24. Re:Building things to last.... by u38cg · · Score: 2, Insightful

    The sad fact is, companies that build to last go out of business. It turns out that, despite protestations to the contrary, consumers want built in obsolescence.

    --
    [FUCK BETA]
  25. Re:Errr by Cyner · · Score: 2, Informative

    Or perhaps a Ternary Computer or a Quantum Computer. There's quite a few varities of digital computer, no harm in being specific.

    --
    FreeBSD.org - The power to serve
  26. 10000 binary years ? by olivier69 · · Score: 3, Funny

    We have been fooled ! This will last only 16 years !

    And I understand binary !

    --
    There are 10 types of people in the world : Those who understand binary, and those who don't...

  27. Re:Non-moving clock by Rakshasa+Taisab · · Score: 2, Insightful

    The point of this clock isn't the accurate keeping of time, rather it is to create dreams for the living, of a time long after their own death.

    --
    - These characters were randomly selected.
  28. Predictability by davidwr · · Score: 2, Insightful

    If you can predict the unique patterns of shadows or light on any cloudless day or night in the future, you can make a calendar and clock that will work on that day.

    In the worst case, you chisel astronomical tables into stone tablets then leave long-life measuring instruments behind. At that point, "what's the date and time" becomes "measure and look it up in the table."

    --
    Knowledge is how to play a game, intelligence is how to win, wisdom is knowing what game to play.
  29. Re:Errr by contrapunctus · · Score: 2, Insightful

    I'm glad you got the joke

  30. Re:10,000 years by cyphercell · · Score: 2, Interesting

    Yes, ever wonder if Noah was a geneticist? How else are you going to fit all of those beasties on a boat?

    --
    Under the influence of Post-Cyberpunk Gonzo Journalism
  31. Re:Errr by esocid · · Score: 2, Funny

    As opposed to a non-binary computer?

    And yes again.

    --
    Absolute power corrupts absolutely. indymedia
  32. Re:10,000 years by GameMaster · · Score: 2, Interesting

    They should leave a message that says "reset after 10,000 years" repeated in all known written languages.

    --

    Rules of Conduct:
    #1 - The DM is always right.
    #2 - If the DM is wrong, see rule #1
  33. Re:Building things to last.... by arth1 · · Score: 3, Informative

    The sad fact is, companies that build to last go out of business. It turns out that, despite protestations to the contrary, consumers want built in obsolescence.

    This is not true. It's just that the working class consumers want a low price before anything else.
    In an "open" market and a class based society, quality will deteriorate to the lowest the consumers are willing to tolerate, because that maximises profits for the seller.
    That's what Karl Marx discussed and why he rejected consumerism, decades before consumerism was rediscovered and embraced by the conservatives.

  34. Re:10,000 years by Teancum · · Score: 2, Interesting

    The Mayan calendar doesn't "run out" in 2012... it merely goes through the equivalent of what we have with the Y10k bug... when date recording will move on to another digit to count the number of years.

    You just need another digit in the "long count" for the Mayan calendar to keep the system going for another couple of millennia.

    I would have to assume (and based on how they use dates that the Long Now Foundation is aware of this) that this proposed clock is going to take the Y10k bug seriously and compensate for it.

    Knowing human irony, this clock will likely last for 100,000 years and not just 10,000 years. And being a 100k year old antique, nobody will want to modify it to count out the extra days/years necessary when that event happens.

  35. Re:10,000 years by Narpak · · Score: 3, Funny

    They'll probably find it an go; "oh my how did those primitive people two thousand years ago build this?!? They can not possible have been smart enough to figure it out on their own; it must have been aliens!"

  36. Re:Wow... by dfm3 · · Score: 2, Funny

    Alabama.

  37. Re:10,000 years by theotherbastard · · Score: 3, Insightful

    Oh please, they're going to tear it down in 50 years because they need space for another parking lot.

    --
    Buttons aren't toys.
  38. Re:10,000 years by rlseaman · · Score: 3, Informative

    "They could probably take care of that by etching a description in multiple languages in epoxy. And who knows, in the future, it may turn out to be useful as a sort of Rosetta stone."

    That's another Long Now project:

    Project Rosetta

  39. Re:Disclaimer: Not Related to End of Time by inasity_rules · · Score: 2, Insightful

    Why not save time and name it the "End of Time Clock"? Longest practical joke ever.

    --
    I have determined that my sig is indeterminate.
  40. Re:10,000 years by NevarMore · · Score: 3, Funny

    What's six times nine?

    54

  41. Re:10,000 years by Maximum+Prophet · · Score: 2, Insightful

    My dad has a schoolhouse clock that has always been running as long as I've been alive. It has a note on the inside saying that it was last repaired in 1909. If a simple clock made of small pieces of iron and brass can last 100 years, a behemoth of stainless steel might be able to last 1000's.

    --
    All ideas^H^H^H^H^Hprocesses in this post are Patent Pending. (as well as the process of patenting all postings)
  42. Re:10,000 years by Sockatume · · Score: 4, Informative

    The Mayan clock does not have a digit rollover then. Their calendar system can run until the year forty octillion without modification. The previous, uninhabited iteration of the world in Mayan mythology was destroyed by the Gods after its 13th baktun, and our own world's 13th baktun ends in 2012. The Mayans were quite comfortable with the idea of a 14th baktun though.

    --
    No kidding!!! What do you say at this point?
  43. Only possible flaw is: by DarthVain · · Score: 2, Funny

    someone has to enter a code and press execute every 108 minutes.

  44. Re:Errr by Seth+Kriticos · · Score: 2, Funny
  45. Ship's propellers by Kupfernigk · · Score: 2, Interesting
    I have seen it suggested, forget where, that a new civilisation or visitors from space could tell, perhaps several millions years in the future, that we had once had a technical civilisation when they discovered the remains of (bronze) ship propellers, which would still be recognisable. (They may be the thickest bronze castings.) Stainless steel will be long gone, so probably will commercial grade nickel, though coinage metal may last.

    Exegi monumentum aere perennius, wrote Horace, but with modern bronze alloys I wouldn't bank on it.

    --
    From scarped cliff or quarried stone she cries "A thousand types are gone, I care for nothing, no not one."
  46. Re:10,000 years by jmorris42 · · Score: 2, Interesting

    > It has a note on the inside saying that it was last repaired in 1909.

    And the last time that clock was reset to correct drift? That is another feature of this clock, it is supposed to be able to not only run for 10,000 years it is supposed to keep correct time for 10,000 without human intervention. That is an interesting goal.

    --
    Democrat delenda est
  47. The Ancient Nevadans by WED+Fan · · Score: 5, Funny

    Children, the ancient Nevadans were a race of people known for their great engineering skills and their faith in the God Roulette, a god that they believed would judge people, punishing them or rewarding them. It is said that with a wave of the hand, the King of the Nevadans could cause a great temple to crash to the ground and then raise a new one up that very day.

    The Nevadan culture built this clock, it will run out in 3 years. They were known for their prophecy. They must have known something we don't. The world will end in the year 12,012. This is off course, a significant number...

    Taken from a lecture at the Art Bell Elementary School in the year 12,009.

    --
    Politics is the art of looking for trouble, finding it everywhere, diagnosing it incorrectly and applying the wrong fix.
  48. Re:10,000 years by dragonbutt · · Score: 2, Funny

    And when (not if) this clock breaks down, what will that encourage us to do?

    My old wind-up alarm clock is busted but it is still right twice a day.

    --
    it was like that when I got here.. I wasen't here when that happened... second shift musta done that....
  49. Re:10,000 years by adonoman · · Score: 2, Funny

    Now you just need to set it so that it's showing the right time when you want to wake up, then you'll be able to set the alarm and have it go off at the right time.

    Oh wait...

  50. Re:10,000 years by stonewallred · · Score: 2, Funny

    They should have it count down 10,000 years. Think of the chaos and concern that would cause the future folks.

  51. Re:Leap Seconds by Sensible+Clod · · Score: 2, Informative

    I'm not so sure about that. The Hebrew lunar calendar was 360 days, but had leap years 7 times in 19 years wherein an extra lunar month was added. This indicates that even 3000 years ago, the solar year was still around 365 days.

    Don't get me wrong; solar drift is an issue, but it's just not changing the year as quickly as you might think. As far as the cause, some think it is because the earth's rotation about its axis is slowing. This makes sense when you take into account: 1) the Moon's gravitational drag and associated tides; 2) that Earth is getting heavier (est. 400 tons of meteors land every year).

    --

    The difference between spam and poop is that you don't have to dig through septic tanks looking for real food. -- Me
  52. Re:10,000 years by Teancum · · Score: 2, Insightful

    I have no idea why this comment was modded to "Insightful". What a waste of mod points. Funny, perhaps.

    Considering the place where they are going to put this clock, it is going to be likely that in 50 years people will forget about its very existence or even know where to find the dang thing. It is going to be in eastern Nevada (U.S. state) near the top of a mountain. Hardly the best place for a parking lot for any reason.

    About the only "famous" landmark of the area is the infamous "Area 51" that has been done to death in SciFi movies. I suppose archeologists from the future who are uncovering what actually happened at Groom Lake may accidentally discover this location as well. Perhaps.