Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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s.001984
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374
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ex aliorum Authorum principijs. </
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<
s
id
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s.001985
">Et primò ſi aquą
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ſponte ſua aſcendit intra fiſtulæ cauitatem à vi parti
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cularum eius ſe mouentium, igitur aut grauitate om
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ninò carent, aut in tali caſu eam non exercent (quod
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vltrò aliqui Authores concedunt) ſi inquam hoc ve
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rum eſt, impoſſibile eſſet vt aqua in fiſtula immiſſą
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perpendiculariter erecta exerceret vllam vim com
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preſſiuam deorsùm, & ideò ſi fiſtula infernè prolon
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garetur, nullo pacto aqua ibidem deorsùm deſcende
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ret, quod tamen experientiæ refragatur, nam
<
expan
abbr
="
eadẽ
">eadem</
expan
>
<
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fiſtula cum aqua contenta in aere translata, & per
<
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pendiculariter ad horizontem erecta ſi inuerſo ſitu
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diſponatur vt pars eius ſupina A fiat prona, aut ei alia
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fiſtula infernè adnectatur, aqua in ea contenta celeri
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motu deſcendit, ſi madida fuerit, quouſque prope
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infimum orificium perducatur; igitur falſum eſt a
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quæ in fiſtula contentæ particulas grauitate priuari,
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proindeque ſponte ſua intra fiſtulam aſcendere. </
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>
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="
s.001986
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<
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abbr
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Cũ
">Cum</
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verò aiunt cauſam prædicti aſcenſus aquæ penderę
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ex eo quòd eius particulæ naturali inſtinctu feruntur
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versùs fluidum aqueum, vel aquæ analogum
<
expan
abbr
="
contẽ-tum
">conten
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tum</
expan
>
in vitri internis poroſitatibus, nec à grauitate,
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quam negant, impediri poſſunt: ſi hoc, inquam, ve
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rum eſſet, madefacta vniuerſa fiſtulæ interna cauita
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/>
te, & poſtea exinanita, atque immerſo orificio infra
<
lb
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aquæ ſubiectæ
<
expan
abbr
="
libellã
">libellam</
expan
>
eleuari ſemper altiùs deberet
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aqua vſque ad fiſtulæ ſupremum orificium, quod ta
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men eſt falſum, non ergo ſponte ſua aqua intra fiſtu
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lam eleuatur. </
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