| Definition: | measure of the degree to which the psychophysical colour of a CIE test sample illuminated by the test illuminant conforms to that of the same sample illuminated by the reference illuminant, suitable allowance having been made for the state of chromatic adaptation Note 1 to entry: See also CIE 13, Method of Measuring and Specifying Colour Rendering of Light Sources. Note 2 to entry: This entry was numbered 845-02-62 in IEC 60050-845:1987.
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