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absorptance

   Also found in: Acronyms, Wikipedia 0.01 sec.
ab·sorp·tance  (b-sôrptns, -zôrp-)
n.
The ratio of absorbed to incident radiation.

[absorpt(ion) + -ance.]
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.absorptance - a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber; "absorptance equals 1 minus transmittance"
coefficient - a constant number that serves as a measure of some property or characteristic

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? Mentioned in ? References in periodicals archive
 
Four correction factors were used: the LOCR window transmittance (TW), the LOCR receiver absorptance (AR), the relative aperture transmittance (TA), and the LOCR electrical calibration (kL).
Both can be used for the electrical substitution equivalence measurement and their separate positions allow checking the effectiveness of the heating system for equivalence of optical and electrical power absorptance by the cavity.
To extend the uncertainty analysis to the NIR, one has to check the absorptance by the chromium oxide coated receiver cavity in the NIR.
 
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