Student's text-book of color ; or, Modern Chromatics, with applications to art and industry (1908)
Rood, Ogden N. (Ogden Nicholas), 1831-1902 · New York : D. Appleton and company · leaf 152
MODERN CHROMATICS. 144 In a blackened piece of cardboard two apertures are cut, about a third of an inch broad, as indicated in Fig. 58. Over these apertures are fastened pieces of stained glass — for instance, red and green ; light from a white cloud is then made to traverse the glasses. At P,… … Fig. 59. — Mode of using Dove’s Apparatus. E G is cardboard with red and green glass; at P is the prism of calc spar. achromatic prism of calc spar, which doubles each of the little patches of coloured light, so that the observer on looking through the prism actually sees two red images of Fig.…
Color · Painting
Internet Archive · Harold B. Lee Library · Public domain (published before 1931). Free to use for anything.
