Gassendi, Pierre
,
De proportione qua gravia decidentia accelerantur
,
1646
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<
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<
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Quod vt certiùs
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fiat, primùm occurrendum est errori, qui facilè obrepere
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potest, ſi quæ de cele itatis augmento in ſpatiis æqualibus
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antè demonstrata ſunt, minùs accuratè perpendantur. </
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<
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enim ex ſuperioribus iam euidenter conſtet, in naturali gra
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uium deſcenſu, ſemper ex dupla diſtantia, celeritatem ha
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beri duplam; & ex tripla distantia, triplam; atque ita
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deinceps, eadem ratione celeritatem augeri: nihil procliuius
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eſſe potest, quàm vt quis exiſtimet, accelerationem illam
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fieri per ſubdiuiſionem primi cuiuſlibet temporis, in parteis
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ſemper minores, pro multitudine, & ratione ſpatiorum æqua
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lium, quæ motu decurruntur; ita videlicet, vt pars ſecunda
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spatij, abſoluatur dimidia parte temporis, quo prima pars
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decurſa est; & tertia pars ſpatij, tertia parte eiuſdem primi
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temporis percurratur, & ita de cæteris: maximè cùm in hac
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etiam hypotheſi, ſpatia & velocitates in eadem eſſe ratione,
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& quod conſequens eſt, ex impeta quoque decidentium corpo
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rum hac ratione inuariato, iidem omnes, quos experientia
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docet effectus haberi, primo aſpectu videantur.
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<
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"> Heic pro
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fectò rurſus mirari tuam ſagacitatem par eſt, qua
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tenus eam non fugit error qui ex poſitione à te aſ
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ſerta conſequitur; tametſi ipſe non conſequi ex iis,
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quæ ſubiicis, contendas. </
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<
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">Me quod attinet, is eſt
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ipſemet, quem deduxi aliàs aduerſus Michaelem
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Varronem, qui primus, quod ſciam, eandem poſitio
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nem ante annos plus minùs ſexaginta defendit; de
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clarando ex ea id incommodi inter cætera conſequi,
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vt, quemadmodum antè inſinuaui, ſpatia acquiſita
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in ſine æqualis cuiuſlibet temporis numeranda ſint,
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vt difformiter, ſic in pluſquàm tripla ratione. </
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<
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