Chromaticity Co-ordinates
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2-1-480
The ratio of each of the three tristimulus values to their sum.
Symbol: (Reference: C.I.E. 1931) x, y, z.
Reference: C.I.E. (extract)
Note: See the Note: to 2-1-475. For a field of vision of about 10 degrees the symbols are x10, y10, z10
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
