Modern chromatics, with applications to art and industry (1879)
Rood, Ogden N. (Ogden Nicholas), 1831-1902 · New York, D. Appleton and Company · leaf 138
MODERN CHROMATICS. 132 disks, the luminosity of the mixture-tint will be not the sum but the mean of the separate luminosities ; that is, 27 J.* This method of mixing colours was mentioned in the second century, in the “ Optics ” of Ptolemy.f It was … rediscovered by Musschenbroek in 1702, and finally greatly imj)roved by Maxwell. The last-named physicist modified the disks, so that it became j)0ssible easily to mix the col- ours in any desired pro})ortion. This important improve- ment is effected simply by cutting a slit through the disk from…
Color · Painting · Color in art
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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