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effective intensity, <of a flashing light>


luminous intensity of a source that has a constant output, of the same relative spectral distribution as the flashing light, which would have the same luminous range (or visual range in aviation terminology) as the flashing light under identical conditions of observation

Note 1 to entry: For practical purposes, a conventional effective intensity can be evaluated for a flashing light from photometric data by an agreed method.

Note 2 to entry: The effective intensity is expressed in candela (cd).

Note 3 to entry: This entry was numbered 845-11-18 in IEC 60050-845:1987.

Note 4 to entry: This entry was numbered 17-360 in CIE S 017:2011.

Publication date: 2020-12
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