അർത്ഥം : 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.
ഉദാഹരണം :
Absorptance equals 1 minus transmittance.
പര്യായപദങ്ങൾ : absorptance, absorption coefficient