Colour vision; being the Tyndall lectures delivered in 1894 at the Royal Institute (1895)
Abney, William de Wiveleslie, Sir, 1843-1920 · New York, W. Wood & Co. · leaf 43
Simple and Complex Coloitrs. 23 of the reflected beam, and throw the patch of light formed by it on a white surface A (Fig. 6), alongside the patch of light B formed by the spectrum. Next let us pass a single aperture (Fig. 7), which can be opened and closed by a screw arrangement, through the… … simple and the complex colours are identical. This illustration of the want of power of the eye to analyse colour might be repeated as often as we like. We may pass coloured wools, for in- stance, through the length of the spectrum and show that they have the property of appearing bright in, and…
Color vision
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