Gage, Alfred P. (Alfred Payson), 1836-1903 · Boston, London, Ginn · leaf 411
ry of color-vision is that of Dr. Young(1801-2), verified by Maxwell and Helmholtz. It supposes the ex-istence of three color sensations, red, green, and violet. These ex-cited simultaneously,and with proper in-tensities, produce thesensation of whitelight. Combined intwos, they producethe… … COMPLEMENTARY COLOES. 393 they excite both red and green, thus giving yellow, and so on.Strictly speaking, light^waves of any length excite all three sensa-tions ; butusually either one or two of them, greatly predominate. The relative intensities of the various color-sensations throughoutthe…
Physics
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