Extinction coefficient

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
  • Imaginary part of the complex index of refraction, in physics

See also

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