The hot glowing surfaces of stars emit energy in the form of electromagnetic radiation. it is a good approximation to assume that the emissivity e is equal to 1 for these surfaces.

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Alvin

Physics

1 February, 02:22

The hot glowing surfaces of stars emit energy in the form of electromagnetic radiation. it is a good approximation to assume that the emissivity e is equal to 1 for these surfaces.

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Violet Bishop · Answer 1

This assumption is correct. The emissivity of a substance is the ratio of the energy radiated from a body to the energy radiated from a black body (perfect emitter). Because these stars reflect negligible radiation compared to the amount they emit.