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 106
ionately to the intensity curves.Thus at 49 brass reflects 77% of the light, and theluminosity of the white is 80. The luminosity ofthe light from the brass is therefore tVo- of 80, or COLOUR MEASUREMENT AND MIXTURE. 103 61. This shows the method which is adopted, ofdeducing luminosities from… … 1. Emerald Green. 2. Ckromous Oxide. 3. Terre Verte. Fio. 2i. trum to fall on a strip of a white surface, and thatfrom the other on a strip of the coloured surface(see page 82). This is a more convenient methodthan that just described, when the coloured surfaceis small. The annexed figures (Figs.…
Color
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