17-1139

scattering

process by which the spatial distribution of a beam of radiation is changed when it is deviated in many directions by a surface or by a medium, without change of frequency of its monochromatic components

Equivalent term: "diffusion"

NOTE 1 A distinction is made between selective scattering and non-selective scattering according to whether or not the scattering properties vary with the wavelength of the incident radiation.

NOTE 2 See NOTE 2 to "reflection".

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