Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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non autem à defectu ponderis eius. </
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<
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">Si enim ſuſpen
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dantur ex filis æquè longis duæ pilæ vna plumbea,
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altera verò lignea quarum quælibet vnam vnciam̨
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pendat tunc ſi æquè à perpendiculo remoueantur, ef
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ficient vibrationes æquitemporaneas, at continen
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tèr vndulationes ligneæ pilæ breuiores fiunt, dùm̨
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breuiora ſpatia hinc inde, & diminuta percurriit, hìc
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verò
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cõſtat
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tarditatẽ
">tarditatem</
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ligni
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abbr
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nõ
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à defectu
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abbr
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põderis
">ponderis</
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, cum
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vnius quoque vnciæ ſit, ſed ab amplitudine molis e
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ius, quatenùs ſua dilatata ſuperficie cogitur expelle
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re
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abbr
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ampliorẽ
">ampliorem</
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aeris molem è ſuo loco, quem euidentiſ
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ſimum eſt reſiſtere expulſioni, vt flabello, & alijs in
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numeris modis experimur. </
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<
s
id
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s.002240
">Sed præterea ſuademur,
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quod non à
<
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abbr
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põdere
">pondere</
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aucto celeritas eius motus in flui
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do augetur; ſi enim ſupponamus ingens nauigium̨
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æquè velocitèr per maris ſuperficiem excurrere, ac
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linter, manifeſtum eſt ea nullam grauitatem exercere
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tranſuerſaliter dum in aqua
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abbr
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innatãt
">innatant</
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. </
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<
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id
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">adueniat poſtea
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impedimentum externum, v. g. plures homines ſuis
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viribus conentur impedire, & firmare curſum prædi
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ctorum inæqualium nauigiorum, procùl dubio ener
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gia vnius hominis tantùm ſiſtere, & ob firmare pote
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rit lintrem, cùm è contrà nauis illa
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ingẽs
">ingens</
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æquè velox,
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ac nauicula
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abbr
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nõ
">non</
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poſſit impediri, neque velocitas eius
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omninò extingui ab ingenti conatu, & repulſu
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centũ
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hominum: cauſa huius diuerſiratis oſtenſa fuit in no
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ſtro opere de vi percuſs. </
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<
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id
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">pendetque ab energia vir
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tutis motiuæ expanſæ per vniuerſam molem nauigij
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prægrandis, quæ tam multiplex eſt virtutis motiuæ </
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