Newall, H. F · London : Society for Promoting Christian Knowledge · leaf 32
faces whatevertheir material and refractive index may be, andalso whatever the angle of incidence may be. Forthe prism on the other hand he will find that thedeviation depends not only on the original incidenceof the rays on the first surface but also on the refrac-tive index of the prism, and,… … Fig. 15. 26 THE SPECTROSCOPE AND ITS WORK [CHAP. which the prism is made transmits red light withgreater velocity than blue, and if both red and bluelight fall simultaneously with the same incidence onthe first surface of the prism, then the blue light willbe deviated more than the red by its…
Spectroscope · Spectrum analysis
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