Formula: Stefan-Boltzmann Law Power    Surface area    Temperature    Stefan-Boltzmann constant

Formula: Stefan-Boltzmann Law
Emitted Radiant Power of a Black Body

Radiant power

Radiant power [J/s] is the energy emitted by a black body per time.

Surface area

Surface area of a black body (for example of the sun).


Surface temperature of the black body.

Stefan-Boltzmann constant

The Stefan-Boltzmann constant has the value \( \sigma = 5.67 \cdot 10^{-8} \, \frac{\mathrm J}{\mathrm{m}^2 \, \mathrm{K}^4 \, \mathrm{s}} \).

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