Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
the light would bereflected by the silvered side, and pass in the direction of the line 2,which would give the principal image of the object; and a faint image of the object would beformed by the first reflec-tion, and be seen in thedirection of the line 1. 899. Figure 26.—Refraction and… … OPTICS. 221 much less. For water, it is 48° 35, for ordinary glass it is 41° 49;consequently, when the angle of incidence, in the case of water, exceeds48° 35, refraction cannot occur, and the light will be totally reflected. Let the diagram represent a glass globe half-full of water. A ray oflight…
Physics · Astronomy
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