What is Stefan Boltzmann law?

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What is Stefan Boltzmann law?

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Answer 1 · 2018-05-09T13:31:01

The Stefan-Boltzmann law is $L = A σ T^{4}$ $L=AsigmaT^4$ , where:

$A$ $A$ = surface area ( $m^{2}$ $m^2$ )
$σ$ $sigma$ = Stefan-Boltzmann ( $~ 5.67 \cdot 10^{- 8} W m^{- 2} K^{- 4}$ $~5.67*10^-8Wm^-2K^-4$ )
$T$ $T$ = surface temperature ( $K$ $K$ )

This law is used to find the luminosity (the rate of energy released), for an object given its surface temperature. This law assumes the body acts as a black-body radiator (an object that emits energy from the entire EM spectrum)

For a given object with a constant surface area, the Stefan-Boltzmann law says that luminosity is proportional to the temperature raised to the fourth power.

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What is Stefan Boltzmann law?

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