:::Hello! Thanks for the comments. And sorry about #24, like I said, the model I gave is slightly idealized b/c I haven't studied the subject in detail. [[User:AndyFrankinson|AndyFrankinson]] 07:58, 9 January 2012 (EST)
:::::No problem, I was in a bit of a commenting frenzy anyway. I'm guessing, because you referred to the ideal gas law, that you have some chemistry background?
:::::Also, I've had students throw the second law of thermodynamics at me when I'm trying to explain evolution. The Earth's surface isn't a closed system either because it's constantly receiving energy from the sun--so the second law of thermodynamics is inapplicable there as well. The only truly closed system that I can think of is in Washington...and, yes, entropy there is ''always'' increasing! --[[User:RudrickBoucher|RudrickBoucher]] 09:05, 9 January 2012 (EST)