Question

What is the opposite of entropy?

Answer 1

Negative entropy? We know it's NOT "order".

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Entropy is defined as the amount of energy dispersal present in a system. The more motion in the system, the more entropy it has... so I suppose an "opposite" thing to entropy is a measure of energy condensation...

But that is really just the opposite sign of entropy... If you want to be facetious, you could define a new state function `Sigma` such that

`Sigma = -S`

so that

`DeltaSigma = -DeltaS`