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Stefan-Boltzmann Law (Power)

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Jan 10, 2024, 6:12:56 PM

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Jul 5, 2016, 1:18:09 PM

$P = A * epsilon *sigma* T ^4$

$(epsilon)"Emissivity of surface"$

$(A)"Surface Area"$

$(T)"Absolute temperature"$

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The Stefan-Boltzmann Law describes the power radiated from a black body in terms of its temperature. Specifically, the Stefan-Boltzmann law states that the total energy radiated per unit surface area of a black body across all wavelengths per uni time, $j^("*")$ , is directly proportional to the fourth power of the black body's thermodynamic temperature. To find the total power radiated from an object, multiply by its surface area:
$P=AepsilonsigmaT^4$ , where:

$A$ = Surface Area
$epsilon$ = emissivity of the surface
$sigma$ = Boltzmann constant
$T$ = absolute temperature

References

The formula and definition are from Wikipedia (https://en.wikipedia.org/wiki/Stefan%E2%80%93Boltzmann_law).

This equation, Stefan-Boltzmann Law (Power), references 1 page

Equations and Data Items

• Stefan-Boltzmann Constant by DavidC

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