Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 208
tsthe section of a glass window pane MN at 0is refracted towards the perpendicular, andcrosses in the direction OP. At P, it is re-fracted from the perpendicular, in the di-rection PE, in which the object is seen. Sothe ray appears to come from S, and theobject is moved, though the direction of…
Physics
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