Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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339
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reſiſtens, quàm in aliud. </
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<
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">Conſiderentur modò duo
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fluida inæqualitèr grauia ſpecie, ſcilicèt hydrargy
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rum, & aqua communis, certum eſt guttam mercu
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rij quatuordecies ponderoſiorem eſſe gutta aqueą
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eiuſdem molis, quia verò vis aeris externa compri
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mens hæc duo fluida ſemper eiuſdem roboris eſt, igi
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tur non poterit conglobare, & ſphæricè contornare
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guttam mercurij æquè
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, ac eſt alia gutta aquę;
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cùm mercurius grauior, & ideò magis
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requi
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rat maiorem vim compreſſiuam, quàm aqua minùs
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grauis; ergo gutta mercurij, quæ ab eadem energia
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aeris contornari debet vna pars decimaquarta opor
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tet vt ſit amplitudinis guttæ aquæ paritèr ſphæricè
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conglobatæ; igitur eſt omninò impoſſibile vt aer ef
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ficiat ſphærulam mercurialem grandiorem, quàm a
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queam; at quia hoc conſtat experientia, guttæ enim
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mercurij, quæ ſupra tabulam planam ſphæricè con
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tornantur, agitanturque, non minores eſſe videntur,
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quàm guttæ aqueæ, quæ ſupra braſſicæ folia
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cõglo-bari
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bari</
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ſolent: Non erit igitur aeris vis compreſſiua ve
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ra cauſa turbinationis aquæ, vel mercurij. </
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Cap. 8. cur
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exiguæ aquæ
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guttæ ſupra
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aquæ
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aſcendunt.</
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PROP. CLXIII.
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Alia experientia id ipſum confirmare.
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<
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">PRæterea ſi energia grauitatis, aut vis elaſtica ae
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ris eſt illa, quæ guttas fluidi vndique
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compri-mẽdo
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mendo</
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eas ſphæricè tumefacit, igitur illæ guttæ, quæ
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ab aere rariſſimo, aut infinitè expanſo ambiuntur, </
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