Editing Heat death paradox (section)

{{short description|Paradox relating to fate of universe}}
The '''heat death paradox''', also known as '''thermodynamic paradox''', '''Clausius' paradox,''' and '''Kelvin's paradox''',<ref name="Cucic2009">{{cite journal |last1=Cucić |first1=Dragoljub |last2=Angelopoulos |year=2010 |title=Paradoxes of Thermodynamics |journal=AIP Conference Proceedings |volume=1203 |issue=1 |pages=1267–1270 |arxiv=0912.1756|doi=10.1063/1.3322352 |series=<!--AIP Conference Proceedings-->|bibcode=2010AIPC.1203.1267C }}</ref> is a ''[[reductio ad absurdum]]'' argument that uses [[thermodynamics]] to show the impossibility of an infinitely old universe. It was formulated in February 1862 by [[Lord Kelvin]] and expanded upon by [[Hermann von Helmholtz]] and [[William John Macquorn Rankine]].<ref name="On the Age of the Sun's Heat">
{{cite magazine|last1=Thomson|first1=William|year=1862|title=On the Age of the Sun's Heat|url=https://zapatopi.net/kelvin/papers/on_the_age_of_the_suns_heat.html|magazine=Macmillan's Magazine|volume=5 |pages=388–393}}</ref><ref name="Energy and Empire">
{{cite book|last1=Smith|first1=Crosbie|title=Energy and Empire: A Biographical Study of Lord Kelvin|last2=Wise|first2=M. Norton|publisher=Cambridge University Press|year=1989|isbn=978-0-521-26173-9|pages=500|author-link2=M. Norton Wise}}</ref>