An introduction to the science & practice of photography (1891)
Jones, H. Chapman (Henry Chapman), 1854- · London : Iliffe & Son · leaf 89
ment of the object is towards the thinner part of the interposed substance, because we cannot but imagine that the light entering our eyes has come in a straight line. In figure 10, B, the passage of light through a prism is Fig. 10. shown, and the apparent displacement of an object viewed directly… … Fig. 11. these two arrangements are made circular, so that the diagrams represent the plane obtained by cutting along any diameter, these two combinations are typical of the two sorts of lenses. The surfaces of lenses are always curved that they may be continuous, and for convenience in manu-
Photography
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