Modern chromatics, with applications to art and industry (1879)
Rood, Ogden N. (Ogden Nicholas), 1831-1902 · New York, D. Appleton and Company · leaf 233
milion, emerald-gi'een, and artificial ultramarine-blue were assumed as the three fundamental colours, and positions at the three angles of an equilateral triangle assigned to them. The length of each side of the triangle was 200 divisions of the scale employed. The first step was to determine the… … Fig. lOl.—Compoimd Disk of Vermilion, Emerald-green, Ultramarine, White and Black, arranged for tile production of Grey. same axis. It was found, when the colours were mixed by rapid rotation, that 36'46 parts of vermilion, with 33-76 of emerald-green and 29-76 of ultramarine, gave a grey similar…
Color · Painting · Color in art
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
