Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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PHYSICES ELEMENTA
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s
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">SIAB, logarithmicæ aſymtotos, ſpatium a corpore in fluido percurſum repræſentat,
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poterunt velocitates in ſingulis punctis ordinatis repræſentari; </
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<
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fig. 1.</
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citatum decrementa, in ſpatiis infinite exiguis æqualibus, AD, DF,
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FH, &</
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FG, &</
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<
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s
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in punctis A, L, X, B, quæ deſignantur ordinatis AC, LM, XZ, BK,
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eſſe in progreſſione geometrica ; </
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<
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nuatio in ſitu contrario poſita.</
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<
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fig. 3.</
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tionis TM ad AB eſt AT, qui etiam eſt logarithmus rationis AB ad TY;</
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ſunt ergo in continua proportione TM, AB, TY : </
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valet TM x TY: </
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rectangula omnia ut TM x TY, SX x SL; </
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<
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reſpondentes, quæ curva BY terminantur, ſuntque primæ inverſè ut ſe-
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cundæ.</
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<
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momenta quibus talia ſpatiola æqualia AC, CP, PQ, &</
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inverſè ut velocitates quibus percurruntur , id eſt inverſè ut AB,
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PE, & </
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B b, F f. </
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<
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rentiis conjunctim repræſentatur, id eſt, lineâ NH; </
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repræſentat tempus quo QT percurritur: </
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rint æqualia, erit NH ad OM, ut QH ad TM , id eſt inverſè ut
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ad TY , aut AB ad QK .</
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<
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ut velocitates in fine, aut inverſè ut velocitates in initiis ſpatiorum; </
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nuimus in n. </
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<
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ſola retardatur, ſit AC velocitas in A, & </
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fig. 2.</
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ctis velocitates determinat ; </
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<
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cæ, quæ uſu venire poteſt in caſu quocunque propoſito, aut quod idem eſt,
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debemus determinare, in figura data quacunque, quodnam ſpatium ſubtan-
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gente repræſentatur.</
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<
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ex ſecunda cauſa ipſi ponderi corporis æqualis ſit.</
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<
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dat, æqualis eſt preſſioni quam corpus de quo agimus ex reſiſtentia ex ſecunda
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cauſa patitur. </
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