Extinction coefficient refers to several different measures of the absorption of light in a medium:
- Attenuation coefficient, sometimes called "extinction coefficient" in meteorology or climatology
- Mass extinction coefficient, how strongly a substance absorbs light at a given wavelength, per mass density
- Molar extinction coefficient, how strongly a substance absorbs light at a given wavelength, per molar concentration
- Optical extinction coefficient, the imaginary part of the complex index of refraction
See also
- For the quantitative relationship between the chemistry and physics definitions, see Mathematical descriptions of opacity
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