Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 440
the mirror. We areable in the laboratory to find experi-mentally the exact location of thisimage F with respect to F and themirror, but we may also obtain thislocation from theory as follows: Con-sider a light wave which originates inthe point F (Fig. 413) and spreads inall directions. Let aob be a… … Fig. 413. Wave reflectedfrom a plane surface 384 IMAGE FORMATION Since, however, reflection took place at mn, and since thereflected wave is propagated backward with exactly the samevelocity with which the original Avave would have been prop-agated forward, at the proper instant the reflected wave…
Physics
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