出典:Wikipedia
出典:『Wikipedia』 (2011/03/03 16:36 UTC 版)
The molar absorption coefficient, molar extinction coefficient, or molar absorptivity, is a measurement of how strongly a chemical species absorbs light at a given wavelength. It is an intrinsic property of the species; the actual absorbance, A, of a sample is dependent on the pathlength l and the concentration c of the species via the Beer–Lambert law, A = εcl.