Absorption (optics)

Absorption, in optics, is the process by which the energy of a photon is taken up by another entity, for example, by an atom whose valence electrons make a transition between two electronic energy levels. The photon is destroyed in the process. Molecules can lose absorbed energy by heat and radiation. Absorption is often measured by spectroscopy.

Related Topics:
Optics - Energy - Photon - Atom - Valence - Electron - Energy level - Molecule - Heat - Radiation - Spectroscopy

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