Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 421
Dut.h i.hvsuist. mathematidan, and astronomer; dis-covered th<- ri.iLiS of Saturn; made important in.provements inl,e telescpe; invente.l the pendulum clock (1G5G); develop..!ith marvelous insi,ht the ^^•ave theory of li^ht; discovered u.Im the polarization of light. (The fac.t of douhle… … The Great Telescope of the Yerkes Observatory (UniversityOF Chicago) This is the largest refracting telescope in the world. The objective is an achro-matic lens (see § 475) 40 inches in diameter, which is mounted in a tube 6.S feetlong. In order to follow the apparent motions of the heavenly bodies…
Physics
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