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Heat death of the universe
The idea of the heat death of the universe, proposed in 1851 by [[w:William Thomson, 1st Baron Kelvin|William Thomson]], stems from the [[second law of thermodynamics]], which states that [[heat]] tends to pass from hotter to colder bodies and eventually becomes uniformly distributed. As an elementary particle of matter (such as a proton) self&#8209;gravitationally shrinks, its heat becomes intensified ("augmented") to a higher temperature and then radiated away into the ambient vacuum:
(contracted; show full)*[[Minimum total potential energy principle]]

==References==
{{Reflist}}

[[Category:Cosmology]]
[[Category:Thermodynamics]]
[[Category:Universe]]