James Clerk Maxwell · Science

The Demon and the Statistics of Heat

How Maxwell, beyond his work on light, became a founder of statistical physics - describing the speeds of gas molecules with a law of probability, and inventing the ‘demon’ thought experiment that exposed the deep, still-debated link between entropy, information, and the arrow of time.

What you'll be able to recall

You learned that Maxwell helped found statistical mechanics, giving the distribution of molecular speeds in a gas, and that his ‘demon’ thought experiment appeared to let a tiny intelligent being violate the second law of thermodynamics by sorting fast and slow molecules. Explain why the demon seems to thr…

Leads to Ludwig Boltzmann.

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