Researches in colour vision and the trichromatic theory (1913)
Abney, William de Wiveleslie, Sir, 1843-1920 · London : Longmans, Green · leaf 159
COLOUR DISCS 139 becomes rapidly less luminous than the white. With the blue-green, the blue, and the violet, the reverse is the case, the white becoming darker than the colour as the beams are equally diminished. Further, it is shown in Chapter XII. that colour disappears from all rays of the… … Fig. 47. YY are yellow discs. Bk is a black disc. W ,, white disc. S is the nut of the spindle. tinguished, this last owing to the feeble stimulation of the retina. Naturally, as the colour begins to dis¬ appear, the matching of the luminosity of the ray under consideration with that of white will…
Color Perception · Color blindness · Color vision
Internet Archive · Wellcome Library · Public domain (published before 1931). Free to use for anything.
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