Perfect-radiator



noun, Physics.
1.
.
[blak-bod-ee] /ˈblækˈbɒd i/
noun, plural blackbodies. Physics.
1.
a hypothetical body that absorbs without reflection all of the electromagnetic radiation incident on its surface.
blackbody
(blāk’bŏd’ē)
A theoretically perfect absorber and emitter of every frequency of electromagnetic radiation. The radiation emitted by a blackbody is a function only of its temperature.

An object that can absorb and send off radiation with complete efficiency — that is, it reflects (see reflection) none of the radiation that falls on it. The higher the object’s temperature, the higher the frequency of the radiation it gives off.

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