Gassendi, Pierre
,
De proportione qua gravia decidentia accelerantur
,
1646
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quovſque, ſi ad KB aptentur nouem, ſint defutura
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octo; vt proinde intelligamus totidem dceſſe ad acce
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lerationis æquabilitatem velocitatis gradus, quot nu
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merare licet triangulos ad læuam è regione cuiuſque
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partis, complendo ſummam triangulorum APB.
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<
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">Conſtare ergo videtur Motum æquabiliter accelera
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tum definiti non poſſe illum,
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Qui æquabilibus ſpatiis
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æqualia celeritatis augmenta acquirat;
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ſed potiùs illum,
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Qui acquirat æqualia æqualibus temporibus:
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atque idcircò
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definitionem à Galileo traditam eſſe meritò præfe
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rendam. </
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De Paralogiſmo, qui Galileo Definitionem ſpuriam
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impugnanti obiicitur.
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<
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Mirari to
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ſatis non poſſe, quomodo
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G
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alileus vir alioquin perspicacis
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ingenij receptam communi conſenſu motus accelerati defini
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tionem non modò falſam, atque impoßibilem exiſtimauerit;
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ſed patenti quoque, ipſiſque tyronibus obuio paralogiſmo
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eiuſdem falſitatem palam, atque euidenter demonſtraſſe adeò
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prafidenter aſſeruerit; & quod ampliùs eſt, etiam viru non
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ineruditis perſuaſerit.
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</
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<
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"> Tum autem pergis,
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Audi igitur;
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mi
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G
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aſſende, & mecum mirare tanti viri demonſtrationem.
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<
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">Si acceleratio motus,
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inquit,
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in deſcenſu grauium æquali
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bus ſpatiis æqualia ſumeret velocitatu ineremema, eſſent
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ſine dubio velocitates inter ſe, vt emenſa spatia: At quoiteſ.
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<
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">cúmque velocitates inter ſe ſunt vt emenſa ſpatia, debent
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neceſſariò ea spatia aut eodem, aut æquali tempore percur
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ri. </
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<
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">Si igitur velocitas acquiſita per totam AC eam
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rationem habeat ad velocitatem acquiſitam per AB, quam
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