Modern chromatics, with applications to art and industry (1879)
Rood, Ogden N. (Ogden Nicholas), 1831-1902 · New York, D. Appleton and Company · leaf 143
ue to the black and white disks ; and these last can be arranged so that the grey furnished by them is as luminous as that given by the other two. In an experiment of this kind it was found that to produce a pure grey it was necessary to take 36 parts of vermUion and 64 parts of bluish-green. This… … FiG. 53. — Large Disk of Red and Blue-green arranged for the Frodaction of a Pure Grey, Small Disk of Black and White furnishes the same Grey. form grey. All this can be put in the form of an equation by writing 86 red + 64 blue-green = 21-3 white -f 78-7 black. We have here expressed the…
Color · Painting · Color in art
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
