An introduction to the study of colour vision (1915)
Parsons, John Herbert, Sir, 1868-1957 · Cambridge University Press · leaf 241
s is uniformly less than normal. Partial protanopia is then a diminution of sensitiveness of the R component, partial deuteranopia of the G component. Other modifications are theoretically possible and are included in the general form that if in the normal system </> = fx (x, y, z) and so on, then… … Ax Fig. 57. Normal trichromatic colour diagram constructed from combined protanopic and deuteranopic observations. A, null-point of protanopes; B, null-point of deuteranopes. (v. Kries.) the Young-Helmholtz theory, such as a shift of one of the curves (vide infra), which account for at least one…
Color vision
Internet Archive · Gerstein - University of Toronto · Public domain (published before 1931). Free to use for anything.
