Gassendi, Pierre
,
De proportione qua gravia decidentia accelerantur
,
1646
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heic ſermo eſt, pars ſecunda DE tribus minutis percurri
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deberet, hoc eſt dimidia parte primi temporis; & pars ter
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tia EF duobus minutis, nempe tertia parte eiuſaem primi
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temporis, & ita de cæteris.
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<
s
id
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"> Quamobrem verò id non
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fieret; cùm ſuppoſito tuo illo principio de velocita
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tibus ſeſe habentibus vt ſpatijs, & nullus ſit paralo
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giſmus, & res ſponte ſua ſe prodat, neque videatur
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euerti poſſe, abs te, vt mox tentas euertere, niſi tua
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ipſius euertas principia, & falſitatem prodens conſe
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quentis, quod tamen ex tuis principiis tam neceſſa
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riò deducitur, videaris etiam prodere falſitatem ante
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cedentis? </
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<
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id
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">Pergis itaque,
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At rem non ita accidere facilè
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intelligimus, diuiſa bifariam parte AD in S, & parte
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item DE ſimiliter in X. </
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id
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">Tunc enim ob eandem ratio
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nem neceſſe fuerit, vt pars SD percurratur in dimidio
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eius temporis, quo pars AS decurritur; & DX in ter
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tia parte, itemque XE in quarta parte eiuſdem temporis,
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vt manifeſtum eſt.
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<
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id
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"> Quorſum verò id neceſſe non fue
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rit; cùm eadem ſit ratio dimidij ad dimidium, quæ
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totius ad totum, & nulla ſit obſeruatio, aut ratio, ex
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qua aliud inferatur potiùs de partibus AD, DE, EF,
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&c. </
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<
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id
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">quàm de partibus AS, SD, DX, &c. </
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<
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">aut de
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quibuſlibet minoribus, dummodò ſint omnes inter
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ſe æquales? </
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<
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id
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">Pergis iterum, C
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ùm igitur ſupponamus
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totam AD minutis ſex pertranſiri, neceſſe erit, vt decur
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ſus per AS quatuor minuta, & deſcenſus per SD duo
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tantum minuta inſumat: vt ſcilicet ea ratione tempus deſ
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cenſus per SD ſit dimidia pars temporis in deſcenſu per AS
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inſumpti; ideoque etiam pars DX minuti.
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(1 1/5)
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nempe tertia
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parte temporis AS; & pars XE minuto vno, ſiue
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