Carhart, Henry S. (Henry Smith), 1844-1920 · Boston : Allyn and Bacon · leaf 278
Fig. 127. … 268 LIGHT. ratio of 1 to /-t. Through the intersection of the incidentray with the inner arc draw the dotted line parallel tothe normal through E. Through its intersection withthe outer arc draw a line to E and produce through theprism. This is EF, the path through the prism. In asimilar way the…
Physics
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