| Definition: | sum of the reflected spectral radiance factor, βR(λ), and the luminescent spectral radiance factor, βL(λ) βT(λ) = βR(λ) + βL(λ) Note 1 to entry: For fluorescence colorimetric applications, it is implicit that the quantity used in the colorimetric calculations is the total radiance factor, and it is common to omit the subscript T. Note 2 to entry: The total spectral radiance factor has unit one.
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