Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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maduerſum facilè conſtat, non enim dixiſſet:
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ſi tantu
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lum aeris antequam demittatur mercurius in fistula, relin
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quatur mercurius deſcendet infra H. vbi ſuſtineri debuerat
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ſi ab aeris cylindro ſuſtinebatur.
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reuerà enim quælibet
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portiones aeris minores ſpatio ID ſummam altitudi
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nem mercurij in fiſtula non deprimunt, quia nimirùm
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aereus cylindrus eiuſdem roboris æquali vi compri
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mit mercurium ſubiectum. </
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<
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maior ID ibidem includitur, tunc virtute eius elate
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ria, vt poſtea dicemus, vim facit contra impulſum̨
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aeris externi, nempè cylindrus mercurij HO æquili
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bratus ab aere externo impellitur ſursùm ab O ver
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sùs H, ab aere verò incluſo intra ampullam AB, dum
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conatur ſe dilatare repellitur deorsùm ab H versùs
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O. </
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tem L agit contra duas reſiſtentias, ſcilicèt contra
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dus</
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mercurij HO, & contra vim exiguam aeris in
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cluſi ſe dilatare conantis; igitur in hoc caſu minor erit
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altitudo mercurij OK quam HO, licet producatur ab
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eadem aeris virtute premente; Nil igitur ex hac ter
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tia aduerſarij ratione deducitur contra aeris preſſio
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nem, & æquilibrium cum mercurio incluſo intra fi
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ſtulam. </
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Cap. 5. de ae
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ris grauitate
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æquilibrio,
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ſtructura, &
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vi elaterią
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eius.</
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Cap. 5. de ae
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ris grauitate
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æquilibrio,
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ſtructura, &
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vi elaterią
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eius.</
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reducitur. </
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<
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ſupremum fiſtulæ poſt mercurij lapſum non vacuum,
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ſed repletum eſſe ait ex materia quadam tenuiſſima,
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ſed valdè tenſa de qua re ſuo loco diſputabimus; in
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terim incidenter noto eius verba dum ait,
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tantam ae-
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