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 266
MODERN CHROMATICS. 256 falling on the screen, they are to be viewed through a blackened tube of cardboard, held in such a way that the observer has both the shadows in his field of view ; the ap- pearance then will be like that represented in Fig. 123. … Fiq. 128.— Blue and Yellow Shadows viewed through a Tube. After the blue shadow has developed itself in full intensity, the tube is to be moved to the left, so that the blue shadow may fill the whole field. The tube being held steadily in the new position, the shadow will still continue to appear…
Color · Painting
Internet Archive · Harold B. Lee Library · Public domain (published before 1931). Free to use for anything.
