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 243
fferent lights it is often convenient to adopt a different scale, viz., one in which the areas of the three sensation curves are equal to each other. With this scale equal ordinates of the three sensation curves correspond to a mixture which will appear white to the normal eye. If we multiply the… … 64 62 GO 58 56 54 52 50 48 46 44 42 40 38 36 34 32 30 28 26 24 70)00' ' ' 'e^oo1 I ' '6o|oo» ' ' I 55|oo I I ' I sojooAU ' » ' *' Fig. 63. Abney's R, 0, and B sensation curves in terms of luminosity. The sums of the ordinates at any point are equal to the ordinate of the photo pic luminosity curve.…
Color vision
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