Bolas, Thomas, Tallent, Alexander A. K, Senior, Edgar · London, Marion & Co. · leaf 188
lacing a slit in the red of thespectrum, another in the blue-violet, and another inthe green, and combining the coloured beams into onepatch, various hues may be produced by varying theamounts of the hues coming through their respectiveslits {see circular coloured diagram Fig. 30). Positions of… … BV B OPTICAL SYNTHESIS. A representation of the spectrum in circular form to show theposition of the purples with respect to the spectrum colours. Thecircle includes all possible hues ; rhe only further variations thatcan be effected are the production of lightened or darkened hues. Each…
Color photography
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