Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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181 - 210
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391 - 420
421 - 450
451 - 480
481 - 510
511 - 540
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MATHEMATICA. LIB. I. CAP. X.
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habent, quæ datur inter numeros in figuris. </
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<
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xml:space
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chinarum, quibus hæc experimenta inſtituuntur, ex ſola
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inſpectione Tabulæ ſatis patet, & </
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ne indiget.</
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<
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xml:id
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xml:space
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xml:space
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">177.</
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hoc caſu adhibito ſecundo vecte movetur primus; </
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<
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tertio poteſt agitari; </
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<
s
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xml:space
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">ſic ulterius ſi libuerit, ultimo tandem
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applicatur potentia, cujus ratso ad pondus, quando cum pondere
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æquè pollet, componitur ex rationibus potentiarum ad ponde-
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ra in ſingulis vectibus, quando ſeparatim adbibentur.</
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<
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4.</
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<
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">Tres vectes A, B, D, ita diſponuntur, ut potentiâ Mpon-
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">178.</
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dus P ſuſtineatur. </
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<
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xml:space
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">In vecte A, ſi ſolus adhiberetur, po-
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fig. 5.</
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tentia eſſet ad pondus, ut 1. </
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xml:space
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& </
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xml:space
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eſt 1. </
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tum & </
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<
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næ ſpatia à potentia & </
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ſe ut 120. </
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<
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<
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xml:space
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">, id eſt, in ratione prædictainverſa, quod
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requiritur ut detur æquilibrium .</
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xlink:label
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xml:space
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<
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<
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<
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xml:space
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">hujus uſus vectis varii dantur caſus, digni quinotentur, & </
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quorum demonſtratio ex dictis facile deducitur.</
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<
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<
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potentiæ, aut intenſitates potentiarum junctas, quando plu-
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rimæ dantur, æquè pollere debere cumgravitate ponderum ve-
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dorum, aut ſuſtinendorum: </
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& </
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<
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xml:space
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ter potentias collocandum erit, & </
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utraque parte à pondere debent eſſe in ratione inverſa po-
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téntiarum intenſitatum.</
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<
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">Potentiarum enim actiones ſeſe mutuo turbabunt, niſi in-
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ter has æquilibrium detur circa punctum ſuſpenſionis pon-
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deris; </
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actiones ſunt coactæ, & </
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