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Cosmo Explains

Long, calm, deeply researched physics and science explainers narrated for sleep and focus.

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2:08:33
Cosmo Explains

Every Confusing Thing About Thermodynamics Explained Slowly (For Sleep)

A slow, complete history of thermodynamics, from the steam engines that pumped water out of British coal mines to the heat death of the universe. It runs through caloric theory and Count Rumford's cannon boring, Carnot's unbreakable efficiency ceiling, Joule's paddle wheel, the first and second laws of Clausius and Kelvin, Boltzmann's S equals k log W and his tragedy, Nernst's third law at absolute zero, and the zeroth law. It then shows the same handful of laws running engine cycles, refrigerators, Maxwell's demon and the heat cost of erasing information, the Earth as a heat engine, and the greenhouse effect first measured by Eunice Foote in 1856. It closes on the arrow of time, the low entropy Big Bang, and life as a temporary pocket of order surfing on entropy increase.

PhysicsScienceJun 15, 2026