Cognitive Scaffold

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MENTAL MODEL · M1309

Heat Death

Heat Death
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Version 1.0.0 · Updated 2026-07-28

CORE DEFINITION

Heat death of the universe is a hypothesis about the ultimate fate of the universe. According to the second law of thermodynamics, as an 'isolated' system, the entropy of the universe will increase over time, moving from order to disorder. When the entropy of the universe reaches its maximum, all other usable energy in the universe will have been converted into heat, and all matter will reach thermal equilibrium. This state is called heat death. In such a universe, there is no longer any energy to sustain motion or life. The theory of heat death was first derived by William Thomson in 1850 based on the thermodynamic principle of mechanical energy loss in nature.

SCAFFOLDING EFFECT

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Heat death of the universe is a hypothesis about the ultimate fate of the universe. According to the second law of thermodynamics, as an 'isolated' system, the entropy of the universe will increase over time, moving from order to disorder. When the entropy of the universe reaches its maximum, all other usable energy in the universe will have been converted into heat, and all matter will reach thermal equilibrium. This state is called heat death. In such a universe, there is no longer any energy to sustain motion or life.

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Cosmological inference: If the universe is an isolated system and entropy continues to increase, it will eventually reach thermodynamic equilibrium, uniform temperature, and no available energy or macroscopic processes, i.e., 'heat death'.

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Source support: Explicit

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    zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E7%83%AD%E5%AF%82ZH · Explicit
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