If a body is irradiated with radiation of wavelength λ, and a fraction a(λ) of that radiation is absorbed, the remainder being either reflected or transmitted, a(λ) is ca...If a body is irradiated with radiation of wavelength λ, and a fraction a(λ) of that radiation is absorbed, the remainder being either reflected or transmitted, a(λ) is called the absorptance at wavelength λ.
