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Reversing Entropy with Maxwell's Demon
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Season 4
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Entropy is surely one of the most intriguing and misunderstood concepts in all of physics...
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Space Time

Reversing Entropy with Maxwell's Demon

Season: 4
Eps: 32

The second law of thermodynamics – the law that entropy must, on average, increase – has been interpreted as the inevitability of the decay of structure. This is … misleading. Structure can develop in one region even as the entropy of the universe rises. Ultimately, entropy is a measure of the availability of free energy – of energy that isn’t hopelessly mixed in thermal equilibrium.

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