Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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<
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gis comprimi aera interceptum inter D, & dictum opercu
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lum à mercurio FB, & cylindro aeris grauitantis per fora
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men A, quam remoto operculo, & clauſo foramine A ab eo
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dem mercurio BF & eodem cylindro aeris exterioris, nam
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perindè eſt ſiue tota vis preſsionis per lineam vnicam inci
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dat, vel applicetur; ſiue ſubduplum per vnam, & ſubdu
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plum per oppoſitam.
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<
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dit)
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perſpicuè deduco non ideo admoto ſcilicet operculo in G
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extare mercurium BF, & minimè ſubſidere, quia ſcilicet
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dictus aer interceptus comprimi vltra non poteſt, ſed alia de
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cauſa, &c.
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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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<
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nõ
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eſſe eius aſſump
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tum, demonſtrabo enim quod clauſo vitro in G, & a
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perto in A vis, qua comprimitur aer FB duplò vali
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dior eſt ea, qua comprimitur clauſo vitro in A, & a
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perto in G, pro cuius intelligentia præmittenda eſt
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ſequens. </
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PROP. CXI.
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Anulus, vel veſica aere plena æquè ab vnica & ſub
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dupla potentia comprimitur conſtringiturque,
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quàm à dupla, ſeu à duabus potentijs illi
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æqualibus vtrinque anulum, vel
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veſicam constringentibus.
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<
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">SIt ABC anulus calybeus, vel veſica aere plena, &
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primò
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cõprimatur
">comprimatur</
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à duabus
<
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potẽtijs
">potentijs</
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<
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cõtrarijs
">contrarijs</
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, &
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interſe æqualibus P, & E, ſeu G. </
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<
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<
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potẽtiarum
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P tunc præcisè æquilibratur reſiſtentiæ, </
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