IEVref:845-29-047ID:
Language:enStatus: Standard
Term: downward flux, <of a light source>
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Definition: cumulative flux for the solid angle 2π sr, below the horizontal plane passing through the light source

Note 1 to entry: The downward flux is expressed in lumen (lm).

Note 2 to entry: This entry was numbered 845-09-34 in IEC 60050-845:1987.


Publication date:2020-12
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