Fabri, Honoré
,
Dialogi physici in quibus de motu terrae disputatur
,
1665
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202
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æqualis, ſcilicet cylindri aëris exterioris, quid mirum, ſi prævaleat, &
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aëra interceptum vltra comprimat, atque adeò Mercurius infra C de
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ſcendat? </
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Antim.
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<
s
id
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s.002381
"> Ad vltimam metam, opinor, hanc difficultatem promoviſti; ego
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quoque vltimam manum admoveo, ac dico, non magis comprimi aëra
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interceptum inter EF & dictum operculum à Mercurio IC, & cylindro
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aëris gravitantis per foramen D, quàm remoto operculo & clauſo foramine
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D, ab eodem Mercurio IC, & eodem cylindro aëris exterioris; nam perin
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de eſt, ſive tota vis preſſionis per lineam vnicam incidat, vel applicetur,
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five ſubduplum per vnam, & ſubduplum per oppoſitam; ſuppone, ſi vis, tu
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bum; altera parte clauſum, in quem immiſſo embolo
<
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abbr
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cõtentus
">contentus</
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aër compri
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matur, applicata potentia vt 8.fac ſegmentum ſeu compreſſionis menſuram
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eſſe 4. digitorum; ſi idem tubus ſit vtrimque pervius, & duo emboli hinc
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inde immittantur, applicata vtrimque potentia vt 4.idem haud dubiè com
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preſſionis effectus conſequetur: igitur quantumvis tum Mercurius CI, tum
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aër gravitans per foramen D, communi quodam niſu in aëra interceptum,
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de quo ſupra, agant, vt magis illum comprimant, certè vltra comprimere
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non poſſunt; quia jam compreſſus eſt à viribus æqualibus, id eſt ab iiſdem
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ponderibus, ſed diverſo modo applicatis; aperto igitur foramine in D,
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Mercurius CI ſubſidere non poſſet, ſubſidit tamen, cùm priùs
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abbr
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nondũ
">nondum</
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aperto
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foramine, minimè ſubſideret. </
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<
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id
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">Vnde, ni fallor, perſpicuè deduco, non ideò,
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admoto ſcilicet operculo in AG, extare Mercurium IC, & minimè ſubſi
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dere; quia ſcilicet dictus aër interceptus inter ſuperficiem Mercurij FE &
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admotum operculum, comprimi vltra
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abbr
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nõ
">non</
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poteſt; ſed quia materia tenſa C
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D, cui Mercurius adhæret, tendi vltra nequit, niſi major vis ponderis ap
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plicetur; aperto verò foramine in D, cum vlteriori tenſione opus non ſit,
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ad deſcenſum Mercurij CI, non parum deſcendit, aérque interceptus tan
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tulum comprimitur; accedente quoque vaſe vacuo P, vt dictum eſt ſupra,
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profundiùs Mercurius CI deſcendit, quia tantulum compreſſionis multo
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aëri faciliùs diſtribuitur, quam modico; cùm ſingulis partibus minùs com
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preſſionis competat. </
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Auguſtin.
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<
s
id
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"> Iam multa lux ex iis, quæ hactenus à te dicta ſunt, aſſequendi
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veritatem, mihi affulſit: jam enim clariſſimè conſtat, ſegmentum CD va
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cuum non eſſe, in quo, ni fallor, omnes ferè conveniunt. </
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Antim.
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<
s
id
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s.002386
"> Omiſeram pulcherrimum argumentum cuilibet obvium, in quo
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vel ipſis oculis, ſpatium illud non eſſe vacuum comprobatur, poſtquam
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enim ſubſidit Mercurius in CI, ſi feneſtras conclavis in quo degis claudi
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jubeas, excepto modico foramine per quod radius ſolaris traiciatur, &
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ſegmentum CD intra radium trajectum immergas, videbis illico intra ca
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vitatem CD radio & luce perfuſam atomos fluitantes: vnde neceſſe dictu
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ſit, fluitare in materia noſtro aëri non abſimili, vt jam ſupra indica
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veram. </
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Auguſtin.
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<
s
id
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"> Iucundum ſanè, juxta atque facilè experimentum, quod
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vacuum omnino profligat: conſtat etiam non ſuſtineri extantem Mercu
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rium CI ab exterioris aëris cylindro, ſaltem ſolo, vt jam obiter monuiſti: </
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