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Updated: April 30, 2025
Now, according to the Hering theory of color, white, red, and yellow are the so-called "dissimilating" colors in the three pairs, white-black, red-green, and yellow-blue, corresponding to three hypothetical visual substances in the retina.
These substances, that is, in undergoing a kind of chemical disintegration under the action of light-rays, are supposed to give the sensations white, red, or yellow respectively, and in renewing themselves again to give the sensations of black, green, and blue. The dissimilating process seems to bring about stronger reactions on the physiological side, as if it were a more exciting process.
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