Question

What is stefan boltzmann constant

Answer 1

The Stefan-Boltzmann constant, symbolized by the lowercase Greek letter sigma , is a physical constant involving black body radiation.

A black body, also called an ideal radiator, is an object that radiates or absorbs energy with perfect efficiency at all electromagnetic wavelengths.

The constant defines the power per unit area emitted by a black body as a function of its thermodynamic temperature .

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Answer 2

Stefan-Boltzmann law, statement that the total radiant heat power emitted from a surface is proportional to the fourth power of its absolute temperature. The law applies only to blackbodies, theoretical surfaces that absorb all incident heat radiation.