Colour : a text-book of modern chromatics with applications to art and industry (1904)
Rood, Ogden N. (Ogden Nicholas), 1831-1902 · London : Kegan Paul, Trench, Trübner · leaf 250
MODERN CHROMATICS. 240 fatiguing all those portions of the retina that are not pro- tected by the presence of the black square ; it thus happens that the ability of the larger portion of the retina to receive the sensation of red is considerably diminished ; the ability of the protected portion of… … When the black square is suddenly removed, the unfatigued portion of the retina receives a powerful impulse from the red surface, but the effect produced on the rest of the retina is inferior in degree. This accounts for the fact that the image of the square is brighter or more luminous ; and we…
Color
Internet Archive · Wellcome Library · Public domain (published before 1931). Free to use for anything.
