IEVref:845-27-115ID:
Language:enStatus: Standard
Term: amplitude of fluctuation of the luminous flux
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Definition: relative amplitude of the periodic fluctuation of the luminous flux as calculated by the ratio of the difference between the maximum and the minimum instantaneous luminous flux, Φmax and Φmin respectively, to the sum of both of these values:

Φ max − Φ min Φ max + Φ min MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgaruWqVvNCPvMCG4uz 3bqee0evGueE0jxyaibaieYdi9WrpeeC0lXdh9vqqj=hEeea0xXdbb a9frFj0=OqFfea0dXdd9vqaq=JfrVkFHe9pgea0dXdar=Jb9hs0dXd bPYxe9vr0=vr0=vqpWqaaeaaciWacmGadaGadeaaeaGaauaaaOqaam aalaaabaGaeuOPdy0aaSbaaSqaaiGac2gacaGGHbGaaiiEaaqabaGc cqGHsislcqqHMoGrdaWgaaWcbaGaciyBaiaacMgacaGGUbaabeaaaO qaaiabfA6agnaaBaaaleaaciGGTbGaaiyyaiaacIhaaeqaaOGaey4k aSIaeuOPdy0aaSbaaSqaaiGac2gacaGGPbGaaiOBaaqabaaaaaaa@4AFB@

Note 1 to entry: The amplitude of fluctuation can be applied also for "luminance" and "illuminance". Additional photometric quantities can be used.

Note 2 to entry: The amplitude of fluctuation of the luminous flux has unit one and is usually expressed in per cent (%).

Note 3 to entry: This entry was numbered 845-07-66 in IEC 60050-845:1987.


Publication date:2020-12
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