The clinical use of prisms; and the decentering of lenses (1893)
Maddox, Ernest Edmund, 1860-1933 · Bristol : J. Wright ; London : Simpkin, Marshall, Hamilton, Kent · leaf 66
and to compare it with Cretes orRisleys prisms it must again be multiplied by two,since these are marked according to the refractingangles and not according to the angles of deviation. 5* Chapter VII. IMAGES BY INTERNAL REFLECTION. HITHERTO we have only considered the refractionof light by prisms,… … Fig. 26.—Image produced by internal reflection withina prism. The light reflected from the first surface of aprism is lost to the eye altogether, being returned 52 PRISMS. into space, but that which, after refraction at thefirst surface, undergoes internal reflection at thesecond surface, as at R…
Lenses
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