An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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Stefan-Boltzmann law
  قانون ِ اشتفان-بولتسمن  
qânun-e Stefan-Boltzmann
Fr.: loi de Stefan-Boltzmann  

The flux of radiation from a blackbody is proportional to the fourth power of its absolute temperature: L = 4πR2σT4. Also known as Stefan’s law.

See also: Ludwig Eduard Boltzmann (1844-1906), an Austrian physicist, who made important contributions in the fields of statistical mechanics and statistical thermodynamics and Josef Stefan (1835-1893), an Austrian physicist; → law.