A blackbody is defined as what?

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Multiple Choice

A blackbody is defined as what?

Explanation:
A blackbody is an ideal object that absorbs all incident radiation and emits radiation at the maximum possible rate at every wavelength. This makes it a perfect absorber and a perfect emitter of energy. It does not reflect or transmit energy, so descriptions of it as a perfect reflector or as something that transmits energy aren’t accurate. In practice, real materials can approximate a blackbody when their surface emissivity is very close to one, meaning they absorb and emit nearly as well as an ideal blackbody.

A blackbody is an ideal object that absorbs all incident radiation and emits radiation at the maximum possible rate at every wavelength. This makes it a perfect absorber and a perfect emitter of energy. It does not reflect or transmit energy, so descriptions of it as a perfect reflector or as something that transmits energy aren’t accurate. In practice, real materials can approximate a blackbody when their surface emissivity is very close to one, meaning they absorb and emit nearly as well as an ideal blackbody.

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