Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 206
d partly in thewater appears broken at the surface, and the part below israised. I* 196 OPTICS. So a coin, Fig. 221,just hidden from theeye at E by the sideof a basin is broughtinto view by fillingthe basin with water.The ray which startsin the direction ml isrefracted downwardat I so that it…
Physics
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