Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Transfer of energy without doing work

  1. Apr 7, 2013 #1
    Since work is responsible for transfer of energy from one form to other,is it possible to transfer energy from one form to other without doing work.
     
  2. jcsd
  3. Apr 7, 2013 #2

    Drakkith

    User Avatar

    Staff: Mentor

    It is not. Whenever work is performed, energy is transferred. Whenever energy is transferred, work is performed.
     
  4. Apr 7, 2013 #3

    Dale

    Staff: Mentor

    Yes, that is called "heat".

    http://en.wikipedia.org/wiki/Work_(thermodynamics)
     
    Last edited: Apr 7, 2013
  5. Apr 7, 2013 #4

    Drakkith

    User Avatar

    Staff: Mentor

    Are we ignoring the work performed on the atoms of the cooler material when the energy is transferred?
     
    Last edited by a moderator: May 6, 2017
  6. Apr 7, 2013 #5

    Dale

    Staff: Mentor

    Yes, essentially by definition. It is really a tautology that comes about by ignoring the microscopic degrees of freedom and only looking at the macroscopic system.
     
  7. Apr 7, 2013 #6

    Drakkith

    User Avatar

    Staff: Mentor

    Ah ok. I figured as much, I just wanted to make sure and to be clear so that the OP doesn't get confused.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook