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| | | #REDIRECT [[Absorption coefficient]] |
| #REDIRECT [[absorption coefficient]] | |
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| == absorption coefficient ==
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| <div class="definition"><div class="short_definition">A measure of the [[extinction]] due to [[absorption]] of [[monochromatic radiation]] as it traverses a medium.</div><br/> <div class="paragraph">Usually expressed as a [[volume absorption coefficient]], ''k''<sub>''v''</sub>, with units of reciprocal length (i.e., area per unit volume), but also as a [[mass absorption coefficient]], ''k''<sub>''m''</sub>, with units of area per unit mass. The two are related by ''k''<sub>''v''</sub> = ρ''k''<sub>''m''</sub>, where ρ is the [[density]] of the absorber. <br/>''See also'' [[absorption optical thickness]].</div><br/> </div>
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| [[Category:Terms_A]]
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