Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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MATHEMATICA. LIB. I. CAP. XXII.
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quadrupla verò ſi ponatur RR inter regulas b, b.</
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<
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globi ænei tres, hiſce oleo antea illinitis; </
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ſig. 3. 5.</
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immerguntur cavitateſque formant, eo majoresquo globi gra-
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viores ſunt. </
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punctis notatæ lineæ cavitatum profunditates demonſtrant.</
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<
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mus primum; </
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<
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plum eſt, & </
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camus globum ſolidum, cujus pondus eſt primi triplum, & </
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qui cadendo ab altitudine novem pollicum cavitatem forma-
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vit C.</
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<
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tantur, cavitates formantur, quæ infig. </
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<
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D, E.</
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<
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mittantur, cavitates formantur C, E. </
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<
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<
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b, b, globo primo cavitas formatur D. </
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<
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">Ipſæ autem cavitates ſunt ſphæræ ſegmenta quæ ſunt in-
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ter ſe ut numeri in ipſis poſiti 1. </
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<
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">Ut pateat, his Experimentis, quæ de viribus ſunt demon-
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ſtrata, confirmari, conſiderandum, vim inſitam illud eſſe
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(quodcunque hoc fuerit) quod datur in corpore moto, & </
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non datur in corpore quieſcente, id eſt, illud quo corpus
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motum, in obſtaculum incurrens, in hoc agit; </
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ipſum dumagit, nullam patitur actionem, exceptâ reactione
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ex obſtaculi reſiſtentiâ, quæ reactio cum actioni æqualis ſit
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ſequitur corpus pati quantum agit; </
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<
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obſtaculum ſequi rationem ipſius vis amiſſæ, diminutio
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enim ipſius vis eſt effectus reactionis; </
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res integras proportionales eſſe effectibus quibus conſumun-
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tur, quod etiam aliâ conſideratione evidens eſt.</
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<
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">Quo major eſt reſiſtentia quam patitur corpus, quo ipſi-
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us actio inſtantanea major eſt, & </
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