Church, A. H. (Arthur Herbert), 1834-1915 · London : Cassell, Petter, and Galpin · leaf 19
COMPOSITION OF LIGHT. 13 in which these colours have been separated from white light is sufficient proof that they cannot be further sepa¬ rated into other kinds of colour. This anticipation is realised by actual trial ; for if, as in Fig. 2, one of the colours of the spectrum, v, be allowed to… … Fig. 1. mitted through a second prism, B. The ray will be re¬ fracted, of course, but it will show but one colour, as before, and its image will not be elongated. We have already learnt that every ray of coloured light has its own wave-length, and therefore that all the colours of the spectrum,…
Color
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