The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies (1856)
Sprague, A. W. (Alfred White), 1821-1891 · Boston : Phillips, Sampson & Company · leaf 300
272. If two plane mirrdrs be inclined towards each otherat any angle^ images from an object placed between themwill be multiplied according to the degree of the angle.— * Lardner. Why do trees and other objects bordering on a smooth sheet of water appearinverted ? State the proposition, section… … other an angle of 90°, and 0 an object placed between.The eye at E will see not only the object at 0, but also itsimages at a and a, caused by a reflection of the rays proceed-ing diiectly from 0. Another ray from 0 falling on H M,will be reflected to V M, from which it will undergo a…
Physics
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