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 105
his method holds good. The intensity of the different rays of the spec-trum reflected from metallic surfaces can also bemeasured, if for the first or second right-angled 102 COLOUR MEASUREMENT AND MIXTURE. prism a small piece of the metal is substituted,using it as a reflecting surface, as can also… … I, Gamboge. 2. Indian Yellow. 3. Cadmium Yellow.4. Yellow Ochre. Fig. 20. These curves are derived by reducing the ordinatesof curve V proportionately 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…
Color
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