Colour measurement and mixture. Published under the direction of the Committee of General Literature and Education appointed by the Society for Promoting Christian Knowledge (1891)
Abney, William de Wiveleslie, Sir, 1843-1920, Society for Promoting Christian Knowledge (Great Britain). General Literature Committee · London: Society for promoting Christian knowledge; New York, E. & J. B. Young & co. · leaf 195
Similar equations were formed as the above. whence Y = 77*6. I92 COLOUR MEASUREMENT AND MIXTURE. The mixture of colours by means of rotatingsectors is one which the artist cannot use for artisticpurposes, and it might seem that for him anydeductions made from this method are useless ; butit is not… … Fig. 44.—Disc arranged to give approximately all the SpectrumColours. from such a distance that the lines are no longerdistinguishable it will appear of a grey; and if wetake the amount of black on the paper and amountof white, and prepare two sectors of black andwhite, whose angles are in these…
Color
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