ng rays of those same orders of refrangibility. § 23. THE SPECTROSCOPE ; Its Construction Before proceeding to study the science which underlies the art ofcolour mixing, it may be well to devote a little attentionto the construction of the spectroscope; an instrumentwhich has now become invaluable… … Fig. 8.—One prism spectroscope. emitted by a coloured object, it is necessary to enlist theaid of the prism in all experiments where the componentrays of a colour have to be separated. A convenient formof apparatus for this purpose is found in the spectroscope,a word which means literally an…
Color in the textile industries · Dyes and dyeing
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