spectral luminous efficiency
British
noun
-
V(λ).
V′(λ).
a measure of the efficiency of radiation of a given wavelength in producing a visual sensation. It is equal to the ratio of the radiant flux at a standard wavelength to that at the given wavelength when the standard wavelength is chosen so that the maximum value of this ratio is unity
"Collins English Dictionary — Complete & Unabridged"
2012 Digital Edition
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