Gassendi, Pierre
,
De proportione qua gravia decidentia accelerantur
,
1646
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Atque ex hoc quidem ratio obiter petitur, cur in
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exemplo repetito de penſilibus, nihil referat, quod
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cumque pondus filo appendas, vt celeritate eadem
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vibrationes fiant; ideò enim penſile centum libra
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rum non vibratur velociùs, quàm penſile vnius vn
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ciæ, quoniam altitudo, ex qua vtrumque cadit, ea
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dem eſt, menſurata nempe, eadem portione perpen
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di uli, quemadmodum eſt ante declaratum: cùm
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celeritas aliunde ſtatim augeatur vel minuatur, ac fi
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lum breuius fit, vel prolixius. </
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<
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de tua Experientia. </
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De Tempore, quo R. P. colligit parteis spatij ſimgulas
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decurſum non iri.
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ſterioris capitis, quod tibi fuit præcipus ſcopus.
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<
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Atque ex his iam manifeſtè, at
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que euidenter conſtat, celeritatem motus in naturali grauium
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deſcenſu per aërem, ſecluſis externis impedimentis, vniformi
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ſemper incremento augeri, & in spatijs æqualibus creſcere
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æqualiter: ita ſcilicet, vt ex dupla diſtantia, celeritas dupla,
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& ex tripla diſtantia, celeritas tripla, atque ita deinceps,
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eadem ratione, maior ſemper celeritas habeatur: niſi fortè
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eò vſque iam progreſſa eſſet celeritas, vt nec celeriùs
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di
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uidi, nec citiùs rarefieri, & accurrere ad replendum va
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cuum naturaliter poſſet.
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<
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Ex quo vlteriùs il
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lud etiam conſtat, quàm non rectè
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G
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alileus, vulgò receptam
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motus æquabiliter accelerati definitionem eam reiecerit, qua
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motus eiuſmodi is dicitur; qui spatijs æqualibus, æqualia cele
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ritatis augmenta acquirit; & quàm oſcitanter idem halluci-
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