Students' text-book of color, or, Modern chromatics : with applications to art and industry (1881)
Rood, Ogden N. (Ogden Nicholas), 1831-1902 · New York : D. Appleton · leaf 153
Fig. 59.—Mode of using Doves Apparatus. R G is cardboard with red and green glass;at P is the prism of calc spar. achromatic prism of calc spar, which doubles each of thelittle patches of coloured light, so that the observer onlooking through the prism actually sees two red images of … Fig. 60.—The Appearance presented when Eed and Green Light are mixed by Doves Apparatus. exactly equal brightness, and also two similar green images.Now, by revolving the calc-spar prism the experimentercan cause one of the red images to overlap one of thegreen, and thus it is possible to mingle…
Color · Painting · Color in art
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