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 55
COLOUR VISION 40 B … Fig. 9. Colour triangle. W, white ; J?, red ; G, green ; B, blue. The numbers are those of an arbitrary scale of the spectrum of the are light. (Abney and Watson.) The Influence of Macular Pigmentation. The macula lutea, as its name implies, is permeated with a yellow pigment, and therefore absorbs…
Color vision
Internet Archive · University of California Libraries · Public domain (published before 1931). Free to use for anything.
