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physical phenomena > event > atomic process > collision > scattering > Raman effect

Raman effect comparison table

Subject	is a kind of	has definition
scattering	radiation direction modification	The process whereby light is absorbed and reemitted in all directions, with essentially no change in frequency. Scattering by free electrons was the dominant source of opacity in the early universe.
Raman effect	scattering	The change of wavelength on scattering. It arises from radiation exciting (or de-exciting) atoms or molecules from their initial states.

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