Absorbance vs. Absorptivity: Know the Difference
Absorbance and Absorptivity Definitions
(physics) A logarithmic measure of the amount of light that is absorbed when passing through a substance; the capacity of a substance to absorb light of a given wavelength; optical density.
The act or process of absorbing or the condition of being absorbed.
A state of mental concentration.
The quality of being absorptive; absorptiveness.
(thermodynamics) The fraction of radiation absorbed by a surface to the total radiation incident on the surface.
(analytical chemistry) The constant a in the Beer's law relation A = abc, where A is the absorbance, b the path length, and c the concentration of solution. Also known as absorptive power. Formerly known as absorbency index; absorption constant; extinction coefficient.
(physics) the property of a body that determines the fraction of the incident radiation or sound flux absorbed or absorbable by the body
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