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absorptance

DEFINITIONS OF: absorptance

1

n 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”
Synonyms:
absorption coefficient, coefficient of absorption
Type of:
coefficient
a constant number that serves as a measure of some property or characteristic
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