4.6.3.1

4.6.3.1 Emission and absorption of infrared radiation

4.6.3.1 Emission and absorption of infrared radiation

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All bodies (objects), no matter what temperature, emit and absorb infrared radiation. The hotter the body, the more infrared radiation it radiates in a given time.

A perfect black body is an object that absorbs all of the radiation incident on it. A black body does not reflect or transmit any radiation. Since a good absorber is also a good emitter, a perfect black body would be the best possible emitter.


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