IEVref:845-04-91ID:
Language:enStatus: Obsolete
Term: indicatrix of diffusion
Synonym1: scattering indicatrix (for a specified incident beam)
[Preferred]
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Definition: representation in space, in the form of a surface expressed in polar coordinates, of the angular distribution of (relative) radiant or luminous intensity or of (relative) radiance or luminance of an element of surface of a medium that diffuses by reflection or transmission

NOTE 1 – For a narrow incident beam of radiation, it is convenient to represent the indicatrix of diffusion in Cartesian coordinates. If the angular distribution has rotational symmetry, a meridian section of the surface is sufficient.

NOTE 2 – The term indicatrix is often used to denote, instead of the surface, the curve obtained in a similar manner in a plane normal to the element concerned.


Publication date:1987
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