Carhart, Henry S. (Henry Smith), 1844-1920 · Boston : Allyn and Bacon · leaf 180
ch waves of sound a*re propagated outwards in the same manner as from the original centre; and the aggregate effect at any point outside this surface is the resultant of the combined action of all the secondary waves propagated from these new centres. The principle follows from the consideration… … Fig. 77. 170 SOUND. and communicates motion to them in the same manner, orbecomes itself a centre of disturbance. The principle of Huyghens is the principle of superposition in a generalized form. The disturbance at any pointat any instant is due to the superposition of all the disturbances which…
Physics
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![An illustration from Cosmographia in qvatvor libros distribvta summo ordine, miraqve facilitate, ac breuitate ad magnam Ptolemæi mathematicam constructionem, ad vniuersamque astrologiam institutens. Francisco Barocio ... avtore. Cum præfatione eiusdem autoris, in qua perfecta quidem astrologiæ diuisio, & enarratio autorum illustrium, & voluminum ab eis conscriptorum in singulis astrologiæ partibus habetur: Joannis de Sacrobosco verò 84 errores, et alij permulti suorum expositorum, & sectatorum ostenduntur. rationibusq[uam] redarguuntur. Præcesserunt etiam quædam communia mathematica, necnon arithmetica, & geometrica principia, nonnullæq[uam] propositiones, de quibus in toto opere sæpe fit mentio: ac demum locupletissimus index eorum, quæ ipsa Cosmographia continentur .. (1585)](https://img.insideoutlibrary.com/img/200/ia-cosmographiainqv00baro-448-118.webp)
