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physical phenomena > event > atomic process > collision > scattering > Umklapp scattering

Umklapp scattering 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.
Umklapp scattering	scattering	The contribution to scattering caused when the exchange of momentum crosses the boundary of a Brillouin zone.

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