Cryostat information

This is a discussion on Cryostat information within the A Brief History of Cprogramming.com forums, part of the Community Boards category; > all perfectly crystalline materials have zero entropy at absolute zero. Doesn't that violate the second law of thermodynamics, though?...

  1. #16
    Mayor of Awesometown Govtcheez's Avatar
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    > all perfectly crystalline materials have zero entropy at absolute zero.

    Doesn't that violate the second law of thermodynamics, though?

  2. #17
    erstwhile
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    No. The second law states that the entropy of the 'Universe' is increasing; the Universe can be regarded as the system under observation (the 'material') plus the surroundings (everything else). A reduction in entropy of the system is bought at the cost of an increase in the entropy of the surroundings such that the total change (system + surroundings) in entropy is positive ie. provided the total entropy increases there is no violation of the second law. In any event, it's a theoretical concept and not practically obtainable since the third law conditions have to be met, namely absolute zero must be attained (which requires an infinite number of steps) and the material in question must also be perfectly crystalline (which is tricky to achieve, to say the least).
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  3. #18
    The Defective GRAPE Lurker's Avatar
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    Quote Originally Posted by Sang-drax
    Yes, the coolest and warmest temperatures observed by humans in the universe have both been observed on earth.
    We've had things warmer than the hottest stars here? How? (I'm not disbelieving you, I just don't know).
    Do not make direct eye contact with me.

  4. #19
    Mayor of Awesometown Govtcheez's Avatar
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    Probably created in a lab.

  5. #20
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    Last edited by MadCow257; 05-17-2005 at 07:37 PM.

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