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→About Absorption
*It can occur in various forms, such as the [[Absorb (Physics)|absorption]] of [[light]], [[sound]], or other [[radiation]].
*[[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, [[absorption]] lines in the [[Absroption Spectra|spectrum ]] are due to transitions between [[energy]] levels in [[atom]]s or [[molecule]]s.*In [[solid]]s, [[absorption]] can be due to phonons or electronic transitions.*[[Absorb|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.
===Examples===