Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 346
thicker than thecentral, retard the waves most, withthe result that the convexity of thewaves is increased, so that theymove off having P as their centre. Fig. 393.-Waves going out from p are These results are further illus- niade more curved by the lens, and ..i- i-i- i ^ ,.ci appear to have P as… … 336 LENSES.
Physics
Internet Archive · Western University Libraries · Public Domain Mark 1.0. Free to use for anything.
