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Two Snowflakes May Be Alike After All

An anonymous reader writes "LiveScience is reporting that it may be possible for two snowflakes to be alike after all. For anyone who studies probability, this seems reasonable, given that the article mentions that 10^24 snowflakes fall in any given year. The article contains links to fascinating snowflake pictures. From the article: 'A typical snow crystal weighs roughly one millionth of a gram. This means a cubic foot of snow can contain roughly one billion crystals ... "It is probably safe to say that the possible number of snow crystal shapes exceeds the estimated number of atoms in the known universe," Nelson said. Still, while "no two snowflakes are alike" might hold true for larger snowflakes, Nelson figures it might ring false for smaller crystals that sometimes fall before they have a chance to fully develop. "How likely is it that two snowflakes are alike? Very likely if we define alike to mean that we would have trouble distinguishing them under a microscope and if we include the crystals that hardly develop beyond the prism stage--that is, the smallest snow crystals," Nelson said.'"

20 of 180 comments (clear)

  1. Birthday attack by setagllib · · Score: 2, Funny

    So now we have a way to link snowflakes and cryptography.

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    Sam ty sig.
    1. Re:Birthday attack by Anonymous Coward · · Score: 3, Funny

      This isn't news. No truism is 100% true.

    2. Re:Birthday attack by teknomage1 · · Score: 4, Funny

      So collisions in snowflake based hashing algorithms would be instances of a SnowCrash?

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    3. Re:Birthday attack by KUHurdler · · Score: 3, Funny

      I'm afraid I'm going to have to ask to see these two snowflakes.

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      Fix Your Own TV - RiddledTV.com Avoid the Landfill
    4. Re:Birthday attack by pluther · · Score: 2, Funny

      Plus, it's the only way to make sure.

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      If the masses can keep you down, you're not the Ubermensch.
  2. My mom said you were wrong. by Anonymous Coward · · Score: 5, Funny

    I am special. And I'm going to be famous.

  3. So? by camperdave · · Score: 4, Funny

    Myth Busted?

    A typical snow crystal weighs roughly one millionth of a grama cubic foot of snow can contain roughly one billion crystals...
    Most snowflakes are less than one-half inch across. The smallest may be only about one-tenth of a millimeter across...

    I think, if you're talking about the myth that Americans do science in metric, then yes: Myth Busted.

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  4. Re:okay, smarty-pants... by NiteShaed · · Score: 4, Funny
    Now how many angels can dance on the head of a pin?
    ...you might just as well ask how many demons can dance on the head of a pin. They're of the same original stock, after all. And at least they dance. [Footnote: Although it's not what you and I would call dancing. Not good dancing anyway. A demon moves like a white band on "Soul Train."]

    -- Neil Gaiman and Terry Pratchett, Good Omens
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    Some bring out the best in others, some the worst. Some bring out far more.
  5. In other news... by yali · · Score: 5, Funny

    If someone tells you "You're one in a million," there are 6,571 people exactly like you.

  6. Interesting science... by MavEtJu · · Score: 3, Funny

    A typical snow crystal weighs roughly one millionth of a gram. This means a cubic foot of snow can contain roughly one billion crystals ...

    Who made one cubic foot equal to 1000 grams? I'll smash him with one cubic foot of lead!

    (ps for the metric vs imperial system: one cubic decimeter of water is one liter, and one liter of water weights one kilogram, so one cubic decimeter of water weights one kilogram :-)

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    bash$ :(){ :|:&};:
    1. Re:Interesting science... by ThePopeLayton · · Score: 2, Funny
      Who made one cubic foot equal to 1000 grams? I'll smash him with one cubic foot of lead!
      Well if you take the weight of one snowflake and divide it by the volume of one snowflake you get the density of a snow flake. If you then multiply 1 cubic foot by the density of a snow flake you get the weight of a "cubic foot of snow flakes".
        If you are looking for someone to blame that one cubic foot of snow flakes weights 1000 grams, i guess you could blame science or god, its really your choice.
  7. next up... by 10100111001 · · Score: 4, Funny

    proving that a watched pot does indeed boil

    Hoorah for science!

  8. Yup, it's true by muffel · · Score: 3, Funny

    Check out the flake in pic #8.
    Last winter, I saw one just like that. I swear!

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    bla
  9. Re:Number of atoms in the universe by C_L_Lk · · Score: 4, Funny

    So how does the number of possible snowflake configurations compare with the number of possible IPV6 addresses? Can we assign a unique address to every snowflake and then just see if we get an address conflict somewhere?

  10. Moo by Chacham · · Score: 2, Funny

    Two snowflakes alike? Bah!

    For those who don't know, this possibility was discussed in France two centuries ago, where this and many other troubling discoveries were dealt with.

    The plan put in place was considered absurd, but doable. To somehow or another change the very climate of the world, to make it use the flakespace at a slower pace until a new dimension could be discovered.

    So, along with European clocks moving a head a second every few years, there world temperature too was set to become warmer. The phenomina today which we call "Global Warming" is actually there to save us from the disasturous effects of two similar snowflakes.

    The official Snowflake Registry in Paris has concluded, after a full investigation of the matter, that no two snowflakes have ever been alike, and each flake fallen is actually recorded with an id. Should you happen to generate a snowflake on your own, please register it, and do the world a favor.

  11. Re:Any other handy aphorisms we'd like to test out by Headcase88 · · Score: 2, Funny

    Once I didn't apply a stitch in time, and was shocked that I only had to make five stitches to fix it back up, instead of the expected nine.

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    "When the atomic bomb goes off there's devastation...but when the atomic bong goes off there's celebraaaaation!"
  12. So... by Kohath · · Score: 3, Funny

    So you're saying all snowflakes are exactly the same?

    They don't taste the same.

  13. Re:What the **** is wrong with Slashdot moderators by Anonymous Coward · · Score: 0, Funny

    OMG duh, its cuz when u talk stupid, ppl think u r stupid :) and theirs no stupid mod, theirs only troll.

  14. Re:Number of atoms in the universe by MrNemesis · · Score: 4, Funny

    The problem is that once you've done a ping sweep of the IPv6 network, the first lot of snowflakes have melted (along with the DHCP server).

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    Moderation Total: -1 Troll, +3 Goat
  15. Dupe! by i_like_ducks · · Score: 2, Funny

    Mod dupe snowflake -1 redundant