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LIGHT, LENSES, EMISSION AND ABSORBTION, REFLECTION, <--->, ----< …
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EMISSION AND ABSORBTION
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All bodies emit and absorb infrared radiation. The hotter it is, the more it radiates in a given time
A perfect black body is a body that abosrbs all the radiation incident on it, and does not transmit or reflect any
A good absorber is a good emitter, so it would also be a perfect emitter
a body at a constant temperature absorbs radiation at the same rate it emits it. When it absorbs more, the temperature goes up.
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