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. . .
As to the meaning of heating and work (I make it a practice not to useevil
four letter words) let me add the following:torch,
The only distinguishing characteristic between heating (an action) and
work (an action) is that heating changes the entropy and work does not.
Thus a system sitting on a hot plate, being played on by a propane
having an internal resistor energized by a battery (internal or externalthe
-- it doesn't matter), being bombarded by high energy particles/photons,
being in a microwave oven, all are HEATING because they all (I think)
change the entropy. A moving piston compressing a gas does NOT change
entropy and therefore does WORK. (The proof of this is not yet on theWWW
page -- I will put it there if there is sufficient interest.)
. .Jim Green
JMGreen@sisna.com
http://users.sisna.com/jmgreen