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uniform-chromaticity-scale diagram
UCS diagram
two-dimensional diagram in which the coordinates are defined with the intention of making equal distances represent as nearly as possible equal steps of colour discrimination of colour stimuli of the same luminance throughout the diagram
Note 1 to entry: This entry was numbered 845-03-52 in IEC 60050-845:1987.
Note 2 to entry: This entry was numbered 17-1368 and 17-1357 in CIE S 017:2011.