In this paper the principle of sensory reflex action is applied to the explanation of color contrast by the method of Ragona Scina. Abney’s experiment in which he found the contrast color induced on a white surface by green to be orange instead of the complementary purple is also explained. Consideration is also given to binocular contrast.
The theories of contrast of Helmholtz, Edridge-Green, McDougall, Mrs. Ladd-Franklin, Hering and Sherrington are briefly discussed.
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