Church, A. H. (Arthur Herbert), 1834-1915 · London : Cassell, Petter, and Galpin · leaf 44
circles of secondary colours where only one colour is removed ; leaving three-sided spaces of primary colours where two colours are removed ; and leaving also a similar space of black or darkness in the centre, where all three primaries are equally removed. The exact con¬ verse of this effect is… … Fig. 15- spaces of the secondary colours, and where all three circles overlap or coincide, a central space of white. Coloured lights are, of course, alone competent to produce secondary colours brighter or more luminous than their constituent primaries. A similar but false imitation of this effect…
Color
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