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Colour vision

M. M. Woolfson
Science Progress (1933-)
Vol. 52, No. 206 (April 1964), pp. 177-190
Stable URL: http://www.jstor.org/stable/43418978
Page Count: 14
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Colour vision
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Abstract

An account is given of the qualities of colour—dominant wavelength, hue and saturation. The way in which the eye sees additive mixtures of coloured lights is explained through the medium of the chromaticity diagram. The Young-Helmholtz and Hering theories of colour vision are critically examined and the physiology of the eye is discussed together with its method of operation, inasmuch as it is understood. A description is given of the Land twocolour projection system which yields results in conflict with the classical ideas of colour vision. It is shown that the Land experiments are a new way of observing the phenomenon of colour transformation, previously investigated by experimental psychologists. Finally a mathematical transformation is described which converts the colours in a scene from what would classically be expected to what is actually observed.

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