of light, or in other words, a black(see Fig. 15). § 31. In dyeing, it is seldom that two complementarydyestuffs can be found to fulfil the exact requirementsin this respect, as all of them, more or less, transmit somerays in common; but by employing three dyestuffs a goodpure black can be… … B;vta*SA Fig. 15.—Total absorption or blackness produced by combinationof red and green glasses. 2 is acid green, while 3 is a good black, dyed by combiningthem both together. All the rays transmitted by the one areabsorbed or quenched by the other. Another good exampleof this total extinction of…
Color in the textile industries · Dyes and dyeing
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