An introduction to the study of colour vision (1915)
Parsons, John Herbert, Sir, 1868-1957 · Cambridge [Eng.] University Press; New York, G. P. Putnam's Sons · leaf 54
e. that the situation of the mixed colour coincides with that of themass centre of two equivalent masses (1) when the two constituentscan be mixed from the three chosen colours ; (2) when one can and theother cannot so be mixed ; (3) when neither can be so mixed. v. Helm-holtz^ has supplied the… … Orange Pig. PurpleDiagram of a colour table. Violet The position of the pure white sensation is obtained by dividing theline joining any two complementary colours according to the relativeamounts of those colours required to produce white when mixed to-gether. The deviation of the curve from a…
Color vision
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