Baly, E. C. C. (Edward Charles Cyril), b. 1871 · London, Longmans, Green · leaf 141
Fig. 48. is shown in Fig. 49; the light coming through the slit at Sis totally reflected by the right-angle prism on to the concavemirror A, by which it is directed as a parallel beam on to therefracting prism. The rays traverse the prism at minimumdeviation, and are reflected by the plane… … FiQ. 49. a third time. They then fall upon the plane mirror H, whichis placed perpendicularly to their path; they are thus reflectedback along their path till they reach the concave mirror A, bywhich they are focussed through the reflecting prism into theeyepiece at O. The light thus traverses the…
Spectrum analysis
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