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 22
THEIR GEOMETRICAL PROPERTIES. 7 One is shown in Fig. 6, and the hypothetical design … Fig. 6.—A circular prism. in Fig. 7 is intended to show how a circular prism isrelated to a rectangular one, as though it were cutout of it.
Lenses
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