Absorptivity: Difference between revisions

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|Meaning=The fraction of incident [[radiation]] that is absorbed by matter.
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|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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== absorptivity ==
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<div class="definition"><div class="short_definition">The fraction of incident [[radiation]] that is absorbed by matter.</div><br/> <div class="paragraph">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]].</div><br/> </div>
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Latest revision as of 22:06, 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.

The fraction of incident radiation that is absorbed by matter.

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