Absorptivity: (a) extinction coefficient; absorption cross section; decadic absorptivity. Compare with molar absorptivity and absorbance. The absorbance of a solution per unit of path length and per unit concentration; a = A/(bc) where a, A, b, and c are the absorptivity, absorbance, path length, and concentration, respectively. Absorptivity varies with wavelength of the incident light.

 

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Absorptivity: (a) extinction coefficient; absorption cross section; decadic absorptivity. Compare with molar absorptivity and absorbance. The absorbance of a solution per unit of path length and per unit . . . View Full Definition

Molar Absorptivity: The absorbance per centimeter of path length when the concentration of absorbing material is 1 M; epsilon = A/(bc) where a, A, b, and c are the molar absorptivity, absorbance, path length in . . . View Full Definition

Beers Law: (A=abc or A=epsilonbc) Beer-Lambert law. In absorption spectroscopy, the absorbance of a dilute solution is equal to its absorptivity times the path length times the concentration of the abs . . . View Full Definition