# Equation 2nd law thermodynamics

1. Dec 23, 2009

### MaoIragorri

Can anyone give me the equation for the second law of thermodynamics...
Thanks

2. Dec 23, 2009

### xxChrisxx

http://lmgtfy.com/?q=2nd+law+of+thermodynamics

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
3. Dec 23, 2009

### Pythagorean

Wiki says:

This, I guess, is an equivalence, not an equation.
Also, note that this is for an isolated system.

4. Dec 24, 2009

### MaoIragorri

Cheers Pythagorean.... lovely xxChrisxx.