Alexander Fufaev

Formula: Stefan-Boltzmann Law

Emitted Radiant Power of a Black Body

Radiant power

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

Surface area

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

Temperature

Unit
Surface temperature of the black body.

Stefan-Boltzmann constant

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