Why does heat always flow from hot to cold?
In short: Entropy is one of the most misunderstood concepts in physics. This video clarifies the different ways we define it—from microscopic states to macroscopic heat flow—to explain why the universe behaves the way it does.
The Second Law of Thermodynamics governs the direction of energy transfer. While many people associate entropy simply with 'disorder,' the law is more complex, involving various formulations like the behavior of Carnot engines and the distribution of microstates.
By exploring these different interpretations, the video helps bridge the gap between abstract mathematical definitions and the physical reality of why heat moves in one specific direction.
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Sources
- Summary by Intellect · source: The Second Law of Thermodynamics: Heat Flow, Entropy, and Microstates
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