quantitykind:Absorptance

Type
Description

Properties
Absorptance is the ratio of the radiation absorbed by a surface to that incident upon it. Also known as absorbance.
$$\alpha = \frac{\Phi_a}{\Phi_m}$$, where $$\Phi_a$$ is the absorbed radiant flux or the absorbed luminous flux, and $$\Phi_m$$ is the radiant flux or luminous flux of the incident radiation.
$$\alpha$$
Annotations
Absorptance(en)
belongs to SOQ-ISO

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