It is assumed that entropy increases in the universe. However, the fluid and acceleration equations are derived assuming that.(adsbygoogle = window.adsbygoogle || []).push({});

TdS=dE+pdV where dQ = TdS.

But dQ is usually set equal to zero to derive these equations. Hence since T is non zero, dS should be zero and so there would be no increase in entropy. This seems to conflict with the initial assumption. Can anyone fault my logic here.?

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# A Entropy and derivations - is my logic faulty?

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