Information as a Building Block · information·2

Information meets thermodynamics

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Boltzmann, Maxwell's demon, Landauer: erasing information costs energy — the hinge that makes information physical, not just mathematical.

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Explain why Boltzmann entropy and Shannon entropy are the same quantity in different languages.State Landauer's principle and say why it matters.Explain how Maxwell's demon was resolved (the demon's memory has to be erased, and that costs energy).Name the bridge from this to black-hole entropy (Bekenstein) — the next landmark.

resources

●The Demon in the Machine— Paul Daviesanchor · book
○Experimental verification of Landauer's principle— Bérut et al.companion · paper
○Maxwell's demon — Bennett's classic expositions or the Wikipedia summary— Charles Bennettoptional · paper

sessions

unlocks Unit 4 (quantum information), Unit 7 (holographic principle).

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