Colour : a handbook of the theory of colour (1916)
Hurst, George H. (George Henry) · London : Scott, Greenwood · leaf 29
12 THE THEORY OF COLOUK. light ; this can be effected in several ways. One method shown in Fig. 6, in which the dispersed beam produced by the prism A is received upon a concave mirror B from which it is re- flected to a point D, where the various coloured rays are all converged to again form white… … FIG. 6. concave mirror, the various portions of the spectrum produced by the prism may be received on a series of mirrors each being reflected to one spot where white light will be re-formed. Another plan, the principle underlying which has been found very useful in the construction of lenses for…
Color
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