what is stefans boltzmann law?
Answers
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The Stefan Boltzmann Law is a means of determining total energy radiated by any object, based entirely on its temperature.
This law states that the energy radiated from a black body is proportional to the fourth power of the absolute temperature. A black body is one which absorbs and emits radiation at all frequencies, with characteristic continuous emission spectra.
Formula:
J={\sigma}T^4
The terms
❂ J - Energy radiated per unit area of a black body per unit time [Units: J m-2 s-1]
❂ \sigma - Stefan-Boltzmann constant [Value: 5.67 x 10-8 J s-1 m-2 K-4]
❂ T - Absolute temperature [Units: K]
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Answer:
The Stefan-Boltzmann law: The rate of emission
of radiant energy per unit area or the power radi-
ated per unit area of a perfect blackbody is directly
proportional to the fourth power of its absolute
temperature. OR
The quantity of radiant energy emitted by a
perfect blackbody per unit time per unit surface
area of the body is directly proportional to the
fourth power of its absolute temperature.