Abstract
EDRIDGE-GREEN1 has directed attention to the shortening of the violet end of the spectrum which he found in some persons. A test of sensitivity to red, orange, yellow, yellow-green, green, blue-green, blue, violet and purple was carried out on 103 men and 104 women, excluding all red-green blind and red or green anomalous subjects. The experiment was performed with a form of colorimeter using the Ilford Monochromatic filters (601–8) and purple (501). Relative brightness was measured as well as sensitivity to hue.
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References
Edridge-Green, F. W., "Colour-Blindness and Colour-Perception", chap. 12 (1891).
Walls, G. L., "The Vertebrate Eye", 99 (1942).
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PICKFORD, R. Darkened Violet in Colour Vision. Nature 156, 506–507 (1945). https://doi.org/10.1038/156506c0
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DOI: https://doi.org/10.1038/156506c0
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