Guevara, Giovanni di
,
In Aristotelis mechanicas commentarii
,
1627
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gis participat de motu recto, ac naturali à quo prouenit ipſa
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maior velocitas tanquam à cauſa intrinſeca, & hoc ita ſe ha
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bere demonſtratur ex principijs geometricis. </
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<
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id
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N108B0
">Similiter non
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ex alio dicimus rotunda corpora ſuper planum, facilius mo
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ueri, niſi quia parua vel minima ſui parte planum contingám,
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ac minus offenſant. </
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<
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abbr
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Idq.
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probatur eo quòd circulus tangat in
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puncto, ac magis à plano ſemotum efficiat angulum. </
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<
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">Quæ
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deſumuntur ex geometricis,
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abbr
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ſuntq.
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veræ cauſæ ipſius mobili
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taris facilioris quæ de rotundis corporibus aſſeueratur. </
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<
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">Quod
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cum in omnibus concluſionibus mechanicis obſeruetur, vt
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per ſe conſtat, palàm conuincitur, eas conſtituere notitiam
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quandam rerum ſiue effectuum procedentem ex cognitione
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cauſæ illorum, ac proinde per diſcurſum & illationem virtute
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medij, nempe ipſius cauſæ præcognitæ, ex notitia
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antecedẽ-tis
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tis</
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deueniendo in notitiam conſequentis, quod eſt ſecundum
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hanc conditionem participare propriam rationem ſcientiæ. </
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<
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id
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">Deinde probatur, nam ea quæ per mechanicam notitiam
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ex cauſis proprijs cognoſcuntur, tàm neceſſario ab ipſis cau
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ſis procedunt, vt non poſſint aliter ſe habere, quæ erat altera
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conditio propriæ ſcientiæ. </
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<
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id
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N108EC
">Neque enim contingenter pon
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dus libræ aut vectis magis grauitat in parte remotiori à fulci
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mento ex eo quòd pars diametri, quæ plus à centro circuli
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diſceſſerit, magis ab eadem virtute moueri ſuapte natura
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præualeat: ſed neceſſariò ac ineffabiliter, cùm neceſſariò li
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bra aut vectis in ſuo proprio motu conſtituatur veluti diame
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ter circuli; & hoc quod eſt pondus in parte diſtantiori à ful
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cimento quod eſt centrum, magis grauitare ſeu efficaciùs de
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orſum impellere eſſentialiter dependeat ab eo, quod eſt par
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tem illam diſtantiorem à centro aptiorem eſſe ad motum, vt
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apertiſſimè ex geometricis principijs demonſtrabitur. </
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<
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per accidens eſt, longiùs ferri miſſilia funda, quàm manu miſ
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ſa, quia in motu circulari qui fit per emiſſionem, ſeu proie
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ctionem, magis illa diſtant à centro per fundæ vſum, quàm ſi
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ſola manu proijcerentur, vt per ſe conſtat; ſed neceſſariò ex
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tali cauſa talis procedit effectus, qui proinde aliter non poteſt
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ſe habere propter eandem rationem, vt in cœteris quoque </
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