Guevara, Giovanni di
,
In Aristotelis mechanicas commentarii
,
1627
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<
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no reſiſtit, nequit aliquo pacto proijci, aut ab alio moueri. </
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<
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<
s
id
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N17EAD
">Qua in ſolutione illud non paruam continet difficulta
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tem, quod quæ nihil contranituntur, ſiue reſiſtunt, proijci
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minime poſſe Philoſophus velit. </
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<
s
id
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N17EB4
">Cum potius ab experien
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tia inferri videatur contrarium. </
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<
s
id
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N17EB9
">Nam ſi quæ minus reſiſtunt
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facilius mouentur, multò magis,
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longèq.
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facilius quæ nihil
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reſiſtunt abſolutè poterunt proijci, ac moueri. </
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<
s
id
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N17EC6
">Pro huius autem difficultatis explicatione, atque intelli
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gentia duo hic animaduertere oportet: Vnum eſt totam ra
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tionem ſucceſſionis in motu, qua conſtituitur propriè mo
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tus, ac diſtinguitur à mutatione inſtantanea, quæ fit tota ſi
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mul, prouenire ex reſiſtentia corporis moti, quæ non niſi in
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tempore ſuperatur. </
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>
<
s
id
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N17ED3
">Alterum verò eſt reſiſtentiam proie
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ctorum in motu locali partim prouenire ab effectu grauita
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tis, aut leuitatis quo ipſa proiecta diuerſas in poſitiones ten
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dunt, atque inclinantur: partim quoque ab aere expellen
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do, vt ipſa dum feruntur, in eius locum ſuccedant, ita vt re
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ſiſtant motioni proijcientis, eò quod moueri nequeant niſi
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mouendo aerem circumfuſum, quem debent expellere, &
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in cuius locum debent ſuccedere. </
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>
</
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<
p
id
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type
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<
s
id
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N17EE6
">His ergo præmonitis, liquidò conſtat, quod ab Ariſtotele
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dictum eſt, nimirum proijci non poſſe, quæ nihil reſiſtunt.
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</
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<
s
id
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">Tum quia proiectio, ſeu proiecti latio non eſſet propriè mo
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tus, nec fieret in tempore, ſed in inſtanti, quod eſt contra
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experientiam: tum etiam quia vbi non adeſt reſiſtentia,
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nec eius cauſa poteſt adeſſe, quæ in proiectis eſt circumob
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ſiſtentia medij expellendi, & inclinatio grauitatis, aut leui
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tatis eorum. </
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>
<
s
id
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N17EF9
">Quæ autem nec grauitatem, nec leuitatem
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habent,
<
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abbr
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nullamq.
">nullamque</
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>
medij circumobſiſtentis repugnantiam,
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nullam pati poſſunt violentiam qualis eſt ea, quæ infertur
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per impetum in ipſa proiecta grauia,aut leuia. </
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>
<
s
id
="
N17F06
">Licet itaque
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defectus reſiſtentiæ per ſe, & abſtractè loquendo, non impe
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diat, ſed potius iuuet actionem agentis: nihilominus tamen
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in propoſito, cum arguat incapacitatem quandam ſubiecti
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ad recipiendum impulſum proijcientis per vim illatam, &
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ſuperan dam aliquam intermedij contrarietatem, ſufficit vt </
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