Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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54
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010/01/062.jpg
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ſagitta exploſa minimè percutiet ſignum æquali ve
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locitate ictum fugiens; igitur manifeſtum eſt, aquam
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minimè grauitatem exercere ſupra ei ſubiectam a
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quam, quando à proprio loco naturali exulat, & per
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aerem mouetur. </
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Cap. 3. flui
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dum in ſuo
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toto quie
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ſcens pon
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derat.</
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<
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">Secùs autem contingit in aqua quieſcente, iņ
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puteo aliquo, vellacu, ſi enim diuidatur pariter in
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laminas æque altas, patet quòd ſupremane dum
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tã-git
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git</
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ſimpliciter ſubiectam aquæ laminam, ſed è con
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tra eam impellit tanta vi
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abbr
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quãta
">quanta</
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eſt energia eius gra
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uitatis, & patet quòd infima aqua pati cogitur com
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preſſionem, cùm ſuſtinere debeat pondus ſupremæ
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aquæ incumbentis: & hoc accidit, quia ſua quiete
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impedit progreſſum, & conatum compreſſiuum
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abbr
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de-orsũ
">de
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orsum</
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ſuperpoſitæ aquę; hac de cauſa ſi habueit poro
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ſitates hæ neceſſario conſtringentur à vi ponderis
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incumbentis aquæ. </
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<
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">Modò quia impulſus compreſſi
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uus factus à ſuperiore aqua ſupra inferiorem nullo
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alio vocabulo deſignatur, quàm grauitatis, vel
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põ-deris
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deris</
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, igitur verum erit, quòd aqua ſuper aquam
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quieſcentem grauitatem exercet non quando in mo
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tu conſtituitur, & extra ſuum naturalem locum, ſed,
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tantummodò, quando ſiſtitur, & quieſcit in loco ſuo
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naturali. </
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Contra do
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ctrinam ſu
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periùs addu
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ctam afferri
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ſolet difficul
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tas valdè
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plauſibilis,
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quod nimi
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rum vrina
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tores ingens
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pondus aque
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incumbentis
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nec patian
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tur, nec ſen
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tiant.</
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<
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abbr
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experiẽ-tia
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tia</
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ſatis vulgata, eſtque huiuſmodi: vrinatores iņ
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profundo maris demerſi non ſentiunt, neque
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patiũ-tur
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tur</
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compreſſionem ſuperincumbentis aquæ, quæ
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multoties plures congios excedit; hinc inferunt, ſi </
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