Benedikt, Rudolf, 1852-1896, Knecht, Edmund, 1861-1925 · London : G. Bell · leaf 20
DECOMPOSITION OF LIGHT BY THE PRISM. 9 bluish-violet to blue, bluish-green to green, greenish- yellow, yellow and orange to red. This coloured image is called a spectrum. The spectrum of white light con- tains all the pure colours, with the exception of those lying between the red and the violet ;… … T FIG. 2. previous experiment. A narrow slit A' is made, parallel to A in the screen 8 >S, which can be adjusted so as to allow any portion of the spectrum to pass through. The light passing through the slit A is caused to pass through a second prism Q, and is cast on to a second screen T T. It…
Coal-tar colors
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