LabScene:^form/Absorptivity/text

Source In science, the term absorptivity (or absorptance) has various meanings:
 * In chemistry, it usually refers to Molar absorptivity: the constant \epsilon used in the Beer-Lambert law, A=\epsilon c l, where A is the absorbance, c is the concentration of the solution, and l is the path length.
 * In physics, the word is used interchangeably with absorbance, and in this context it means the fraction of radiation absorbed at a given wavelength.