Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 199
int A, Fig. 212, be placed in front of a plane mirror,M N. A pencil of divergent rays passesfrom the point to the mirror. These raysstrike the mirror at all points, but anytwo, as those which enter the eye, willshow the conditions of all. The ray ABstrikes the mirror sit B, making the angleof…
Physics
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