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Equation 2nd law thermodynamics

  1. Dec 23, 2009 #1
    Can anyone give me the equation for the second law of thermodynamics...
  2. jcsd
  3. Dec 23, 2009 #2

    There is no straight equation for 'the second law of thermo'.

    There is an equation for entropy (there are acutally quite a few eq for entropy).
    The second law tells you that entropy will always increase in a closed system.

    Is there any specific question you have concerning the 2nd law, as what you asked could have been very easily found using google.
    Last edited: Dec 23, 2009
  4. Dec 23, 2009 #3


    User Avatar
    Gold Member

    Wiki says:

    This, I guess, is an equivalence, not an equation.
    Also, note that this is for an isolated system.
  5. Dec 24, 2009 #4
    Cheers Pythagorean.... lovely xxChrisxx.
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