Modern chromatics, with applications to art and industry (1879)
Rood, Ogden N. (Ogden Nicholas), 1831-1902 · New York, D. Appleton and Company · leaf 201
EFFECT ON COLOUR BY CHANGE IN LUMINOSITY. 195 amount of tlie colour, it becomes very whitish and pale ; and Aubert found that the red when mixed with from 120 to 180 parts of white entirely disappeared. If we set the luminosity of vermilion as one fourth of that of white paper, it follows from… … Fig. 81. — Indicates the appear- Fig. 80.— White Disk partially ance presented by the previ- painted Eed with Vermilion. ous disk when set in rapid rotation so as to mix the red and white light. with 720 parts of white light, having a brightness equal to its own, causes the red colour to disappear.…
Color · Painting · Color in art
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
