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→About Absorption
*[[Material]]s have specific [[Absorption Spectra|absoption spectra]] indicating which [[wavelength]]s they [[Absorb (Physics)|absorb]].
*[[Absorb (Physics)|Absorbtion]] of [[Visible Light|light]] occurs when the [[energy]] of the [[photon]] is transferred to an [[electron]] in the [[Absorb (Physics)|absorbing]] material.
*In [[gas]]es, [[Absorb (Physics)|absorption]] lines in the [[Absroption Absorption Spectra|spectrum]] are due to transitions between [[energy]] levels in [[atom]]s or [[molecule]]s.
*[[Absorb (Physics)|Absorbtion]] coefficients quantify how much [[Visible Light|light]] is [[Absorb (Physics)|absorbed]] per unit distance in a material.
*Applications include [[Absorb (Physics)|absorption]] spectroscopy, which is used to determine the composition of substances.