Abstract
Comparisons are made between shifts in color appearance reported by Wassef from W. D. Wright’s laboratory and those predicted by the Burnham, Evans, Newhall (B-E-N) equations for a change from daylight to tungsten adaptation. Prediction equations based on Wassef’s data are also reported, and a comparison is made between the B-E-N and Wassef predictions for all of the Munsell colors specified by Kelly, Gibson, and Nickerson. Both sets of data lead to similar predictions, and charts are presented from which predictions for a wide variety of colors may easily be compared with the shifts in color appearance found in practice.

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