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Look up absorptivity in Wiktionary, the free dictionary. |
The term absorptivity has two meanings:
- In chemistry, it usually refers to Molar absorptivity : the constant ε used in the Beer-Lambert law, A = εcl, 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 absorptance : the fraction of radiation absorbed at a given wavelength.
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