Borro, Girolamo
,
De motu gravium et levium
,
1575
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233
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geſima dicebatur. </
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<
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">Aer vtrumque motum iuuat ſursum, &
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deorsum, & vtraque corpora grauia, & leuia in motu violen
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to, & naturali portat, & vter inflatus eſt vere inani grauior:
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ergo aer in ſuo loco est verè grauis: negatur conſequentia, ſi
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de aeris natura intelligatur, & eadem
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cõſequentia
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datur, ſi
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de effectu, qui in grauibus, & leuibus corporibus ſpectatur,
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id totum intelligere velimus: item cum dicitur; aer corpora
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grauia deorsum fert facilius quam leuia ſursum: ergo ma
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gis grauis, quam leuis: inficienda est consequentia, ſi de aeris
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natura nec graui, nec leui in ſuo loco naturali audiatur, &
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concedenda ſi de affectu aeris; qui efficacius grauia deor
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ſum, quam leuia ſursum portat; de aqua dicendum est idem.
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">Quomodo elementorum motus à medio
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pendeat. </
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<
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<
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">OSTENDO
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elementorum motum non pendere à me
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dio, præſertim
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abbr
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cũ
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dictum ſit, medium moueri per ſe à
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sua forma naturali, post quam à ſimplici corpore gra
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ui, & leui motum fuerit: quia tunc sequeretur, corpus ſim
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plex in fine,
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quã
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in principio tardius moueri, cui aduerſatur
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Ariſtoteles primo cæli particula octuageſimanona: conse
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quentia probatur. </
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<
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id
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">Prima pars aeris moti secundam mouet,
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& secunda tertiam, & ſic deinceps: ergo secundum
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abbr
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mouẽs
">mouens</
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minus mouet, quam primum & tertium minus quam secun
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dum, vt patet in his, quæ proiciuntur: ergo elementa tar dius
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in fine, quam in principio mouentur.
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Reſpondeo medium impulſum prius natura, & ſi non tem
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pore à violento impellente mouetur, & poſterius à sua forma
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dum medium (verbi gratia) lapidem in sublime
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motũ
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por-
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