Absorptivity: Difference between revisions
From Glossary of Meteorology
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|Meaning= | |Meaning=The fraction of incident [[radiation]] that is absorbed by matter. | ||
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 20:51, 13 January 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.
