English noun: absorption coefficient | |||
1. | absorption coefficient (quantity) 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 | ||
Samples | Absorptance equals 1 minus transmittance. | ||
Synonyms | absorptance, coefficient of absorption | ||
Broader (hypernym) | coefficient | ||