பொருள் : 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.
							எடுத்துக்காட்டு : 
							Absorptance equals 1 minus transmittance.
							
ஒத்த சொற்கள் : absorptance, absorption coefficient