Physical laboratory experiments : mechanics, optics and heat (1917)
Goodwin, H. M. (Harry Manley), 1870- · Boston : G. H. Ellis Co., Printers · leaf 143
prism P, a devicefor viewing the two beamsof light in juxtaposition.This is accomplished byconstructing the prism intwo parts with a commonsurface of contact, asshown in Figure 4. Therays, SiM^, fall normallyupon the first face of theprism, and the central por-tion of the beam passesdirectly… … Fig. 4. GAS PHOTOMETRY 15 of view. On the other hand, of the rays of light, SzM^,coming from the other side of the screen, the central portionof the beam passes on through the surface of contact of theprisms and so out of the field of the eye-piece, while theouter portions are totally reflected…
Physics · Mechanics
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