Gassendi, Pierre
,
De proportione qua gravia decidentia accelerantur
,
1646
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deſcenſus procliuior, faciliorque, & aſcenſus difficilior vi
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deatur:
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id repugnaret tum compenſationi, aduerſus
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quam nihil obiicis, inter breuitatem, & decliuita
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tem ſpatij; tum familiari experientiæ de rebus deor
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sùm impactis, quæ impetu pari deiectæ tantò emer
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gunt altiùs, quantò incidentia eſt magis perpendi
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cularis. </
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<
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id
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">Attingo ergo potiùs id, quod ſupereſt,
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dum id ſugillas, quod Galileus ſe eſſe ſæpiùs exper
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tum ait,
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tum globum ferreum per aërem cadentem, tum
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globum æneum per excauatum in longiore tigillo alueolum,
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in quacumque tigilli ſupra horizontem eleuatione deſcenden
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tem, perpetuò tantum præcisè temporis in deſcenſu per pri
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mum totius percurrendi spatij quadrantem, quantum in
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trium reliquorum decurſu inſumpſiſſe: ex quo ſine dubio con
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ſequens eſſet, ſpatia æqualibus temporibus decurſa in ea
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eſſe ratione, quæ reperitur inter numeros impareis ab vnita
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te procedenteis.
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<
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"> Nimirùm, vt oſtendas ea, quæ ex iſtis
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quaſi principiis conſequuntur, aut inferuntur, eſſe ip
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ſis certiora, aut cuidentiora non poſſe:
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Id,
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inquis,
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tot
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erroribus obnoxium eſt, & exploratu adcò difficile, vt nihil
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inde certi concludi poſſe videatur.
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<
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"> Enimverò, vtcum
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que experiundi modus difficilis ſit, obnoxiuſque er
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roribus; non idcircò tamen experimentum conuin
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citur falſum. </
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<
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">Tuum certè illud de Libra, cui totus
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poſteà inniteris, quot quæſo, vel te deducente, er
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roribus obnoxium eſt? </
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<
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">quàm exploratu difficile? </
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ipſum tamen falſum non habes? </
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<
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">Cùm profectò illo
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teſtetur ſe ſaltem centies rem exploraſſe, & experi
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mentum ſemper ita ſucceſſiſſe, vt vix vlla vnquam
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differentiola interceſſerit; videri poteſt non eſſe tua </
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