Noun: absorptance ub'sorp-tun(t)s or ub'zorp-tun(t)s
- 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";
- absorption coefficient, coefficient of absorption
Derived forms: absorptances
Type of: coefficient
Encyclopedia: Absorptance