Color problems : a practical manual for the lay student of color (1902)
Vanderpoel, Emily Noyes, 1842-1939, Stevens, Sara R. sgn, Holahan, Elizabeth Gibson, 1903-2002. fmo · New York: Longmans, Green, and Co. · leaf 202
SPECTRAL RED DISK FOR EXPERIMENTIN COMPLEMENTS Gaze steadily at the red disk for three minutes, cover itquickly with the preceding blank page without removingthe eyes and you will see its complementary image. Plate XXII … SPECTRAL RED AND ITS COMPLEMENT, BLUE-GREEN, IN THEIR RELATIVE PROPORTIONS The gray in The centre of this Plate is the gray produced by the abovetwo complements when mixed on a color wheel, and corresponds exactlyto the gnay produced by the given amounts of black and white. (N. B. The above…
Color
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