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Stefan-Boltzmann law (Stefan, L. Boltzmann)

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Definition: Stefan-Boltzmann law (Stefan, L. Boltzmann): The radiated power P (rate of emission of electromagnetic energy) of a hot body is proportional to the radiating surface area, A, and the fourth power of the thermodynamic temperature, T. The constant of proportionality is the Stefan-Boltzmann constant.

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