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 234
nents isuniformly less than normal. Partial protanopia is then a diminutionof sensitiveness of the R component, partial deuteranopia of the Gcomponent. Other modifications are theoretically possible and areincluded in the general form that if in the normal system ^ = /i {x, y, z)and so on, then in… … AX Fig. 57. Normal trichromatic colour diagram constructed from combined protanopiaand deuteranopic observations. A, null-point of protanopes; B, null-point ofdeuteranopes. (v. Kries.) the Young-Helmholtz theory, such as a shift of one of the curves {videinfra), which account for at least one group…
Color vision
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