The e-ILV provides free access to all the terms and definitions contained in the international standard CIE S 017:2020 ILV: International Lighting Vocabulary, 2nd edition.
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contrast revealing coefficient, <of a tunnel lighting installation>
quotient of the luminance,
Note 1 to entry: The contrast revealing coefficient is expressed in steradian to the power minus one (sr−1).
Note 2 to entry: This entry was numbered 17-254 in CIE S 017:2011.