Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 226
SMllillilllliilllllllllllilillllllilllilllilllihiililFig. 23 … Fig. 256. Fig. 256, shows a section of an eye in which this defect existsThe rays of light from the source a are refracted so as to form a THE TTNDULATOKY THEOKY. 217 focus at b, between the lens and retina, -whereas they should focusupon the retina at c. 738. Far Sightedness, illustrated in Fig.…
Physics
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