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Entropy and Work Done

03/01/2012 2:23 AM

why workdone decreases with increase of entropy.

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#1

Re: Entropy and Work Done

03/01/2012 9:43 AM

From Wikipedia:

"Entropy is a thermodynamic property that can be used to determine the energy not available for work in a thermodynamic process..."

http://en.wikipedia.org/wiki/Entropy

(and yes, I know Wikipedia isn't the most reliable source in the world, but really, who is going to take the time to write an entry about Thermodynamics if they don't understand it?)

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#2

Re: Entropy and Work Done

03/01/2012 12:20 PM

Like asking this question

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#3

Re: Entropy and Work Done

03/01/2012 1:41 PM

Entropy is basically the wearing down of everything. From the moment you are born, you are undergoing entropy. The sun is going through entropy and will someday cease to exist. Pushing your car down the road is a good way to think about it. How long could you honestly keep it up? All things wear out. Can entropy be stopped? Hell no!

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#4

Re: Entropy and Work Done

03/01/2012 9:30 PM

The concept of entropy is like "age" of human being. It can never reduce, it has same direction as the time arrow, and practically, at higher age you can not expact more work from any body. Anyway this was on lighter part of subject.

The concept of entropy evolved in order to explain why some processes occur spontaneously while their time reversals do not; systems tend to progress in the direction of increasing entropy. For isolated system, entropy never decreases. This fact has several important consequences in science: first, it prohibits " perpetual motion" machines; and second, it implies the arrow of entropy has the same directionality as the arrow of time. Increases in entropy correspond to irreversible changes in a system, because some energy is expended as waste heat, limiting the amount of work a system can do

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#5
In reply to #4

Re: Entropy and Work Done

03/02/2012 9:00 AM

For a good laugh, check out the following wiki about "Thermosdynamics":

http://www.google.ca/url?sa=t&rct=j&q=thermosdynamics&source=web&cd=10&ved=0CG4QFjAJ&url=http%3A%2F%2Fmirror.uncyc.org%2Fwiki%2FThermodynamics&ei=FtJQT8fqK8PXiALUx5i1Bg&usg=AFQjCNHCmeb2vuIk1cCMRjg1lxn4e0r_Sw

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#6

Re: Entropy and Work Done

03/09/2012 10:46 AM

"Welcome to Entropy Burgers -- may I take your order?"

"I put in disorder a long time ago. The service here is getting worse all the time."

"My experience Gibbs me reason to believe you."

"I know the waitress who asked that, too. Her name's Ellen Omega. She really made me thermally dynamic. So, I asked her out. I tell you, when she don't like you, she really Boltz, man. Women like that are never distributed normally among the population."

"What kind of Poisson would say something like this?"

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