Sargent, Walter, b. 1868 · New York, C. Scribner's Sons · leaf 86
THE ENJOYMENT AND USE OF COLOR 68 hind black, the red rays apparently affect the eye first. Ii we make a disk with black upon white, as in Fig. 6,* which is one form of the Benham disk, and then rotate it at a … Fig. 6. Benham disk. From Cehr and Its Applications, M. Luckiest, p. 39. certain speed, in one direction, the outer rings appear re< and the inner ones blue, while those in between give inter mediate hues. Now if we rotate the disk in the opposit direction the inner rings will appear red and the…
Color
Internet Archive · Brigham Young University-Idaho, David O. McKay Library · Public domain (published before 1931). Free to use for anything.
