violation of second law

Discussion in 'General Science' started by tathamay, Dec 21, 2006.

  1. tathamay

    Thread Starter New Member

    Dec 18, 2006
    in case of green house effect,dose second law of thermodynamics violet.please give reason.
  2. kubeek

    AAC Fanatic!

    Sep 20, 2005
    you mean some dose of Violet or something?

    Tell us why you think it could be violated and then someone can answer why it is not true. (no nature laws can be violated, they can only be misunderstood)

    BTW why everyone uses these stupid first law and second law names when nearly no-one remembers which one is which?
  3. Dave

    Retired Moderator

    Nov 17, 2003
    The Second Law of Thermodynamics - Entorpy increases with time, or in laymans terms the levelling of physical properties such as temperature, density and pressure, in only (as far as I'm concerned) applicable to macro-physical systems (i.e. large).

    If you could recreate the green-house effect on a macro-scale then it would be interesting to see how entropy behaves (or more correctly how the green-house effect changes).

    I am moving this to the physics forum.

  4. thingmaker3

    Retired Moderator

    May 16, 2005
    Courtesy of Dr. Sam B. Knapp, PhD (My wife's dad)...

    First Law of Thermogoddammits: You can't get something for nothing

    Second Law of Thermogoddammits: You can only break even at absolute zero

    Third Law of Thermogoddammits: You can't get to absolute zero

    More seriously, the second law of thermodynamics applies to closed systems. Energy from the sun and from cosmic background radiation continues to enter our atmosphere, so it must be considered as part of the system for thermodynamics purposes.
  5. Dave

    Retired Moderator

    Nov 17, 2003
    If I ever write a paper that requires some reference to thermodynamics, these are the versions I will use! :D

    You are absolutely correct about closed systems. I think thermodynamic scientists and engineers like to call them Isolated Systems.

  6. Reshma

    Active Member

    Mar 11, 2007