Absorptivity: Difference between revisions
From Glossary of Meteorology
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{{Term | |||
|Display title=absorptivity | |||
{{ | |Definitions={{Definition | ||
|Num=1 | |||
|Meaning=The fraction of incident [[radiation]] that is absorbed by matter. | |||
|Explanation=Absorptivity may be a function of [[wavelength]] and/or direction, and is related to the [[emissivity]] of the region by [[Kirchhoff's law]]. The absorptivity is identically equal to unity for [[blackbodies]] and is independent of wavelength for [[graybody|gray bodies]]. | |||
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Latest revision as of 21:06, 27 March 2024
The fraction of incident radiation that is absorbed by matter.
Absorptivity may be a function of wavelength and/or direction, and is related to the emissivity of the region by Kirchhoff's law. The absorptivity is identically equal to unity for blackbodies and is independent of wavelength for gray bodies.