The outlines of physics: an elementary text-book (1897)
Nichols, E. L. (Edward Leamington), 1854-1937 · New York, The Macmillan Company; London, Macmillan & Co., Ltd. · leaf 396
a pinch of starch, sufficientto give it a slightly cloudy appearance, has been added. Mount the REFLECTION AND REFRACTION 381 beaker upon a high stand, and throw a beam of sunlight obliquelyupwards upon the slit, as shown in Fig. 357. (6) Observe the path of the ray within the liquid, and trace… … Fig. 357. is a case of ordinary reflection from the inner surface of the densermedium. So long as there is an emergent ray in the air, total reflec-tion does not take place. (c) Increase the angle which the ray makes with the surface of thewater, by movement of the mirror, until the critical angle…
Physics
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