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17-24-047

reflection, <of radiation>

process by which radiation is returned by a surface or a medium, without change in the frequency of its monochromatic components

Note 1 to entry: Part of the radiation falling on a medium is reflected at the surface of the medium ("surface reflection"); another part can be scattered back from the interior of the medium ("volume reflection").

Note 2 to entry: The frequency is unchanged only if there is no Doppler effect due to the motion of the materials from which the radiation is returned.

Note 3 to entry: This entry was numbered 845-04-42 in IEC 60050-845:1987.

Note 4 to entry: This entry was numbered 17-1065 in CIE S 017:2011.

Publication date: 2020-12
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