Handbook of optics for students of ophthalmology (1899)
Souter, William Norwood, 1961-1935 · New York, Macmillan · leaf 21
ation is toward the normal, then i is greaterthan r, and consequently v is greater than v. Thus, REFRACTION AT PLANE SURFACES 11 according to the wave theory, the velocity of lightmust be greater in air than in a dense medium,such as water or glass. On the other hand, accord-ing to the emission… … Fig. 3. When light passes from a rarer to a denser me-dium, n is greater than unity, and since sin r — , n sin r is never greater than unity whatever may be theangle i; but when light passes from a denser to ararer medium, n is less than unity, and, for certainvalues of i, sin r may become greater…
Eye · Lenses
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