Gassendi, Pierre, De proportione qua gravia decidentia accelerantur, 1646
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              qua aqua ſuperſtans continenter incumbit, ac premit;
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              An-non planum eſt intelligere impetum, ac velocita­
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              tem duplò maiorem fieri non ex altitudine dupla,
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              ſed penitùs ex quadrupla; triplo non ex tripla, ſed ex
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              nonupla, & ita deinceps? </s>
              <s id="s.000521">Secundò, ſi alligatus vno
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              ſui extremo ad parietem funis prælongus, altero ex­
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              tremo dependeat ex fulcro, ac appenſo pondere certo,
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              v. c. vnius libræ, tenſione ſit leni inter ipſa extrema:
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              verò digitis verò, ita abducatur, vt vltro citróque horizon­
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              taliter vibretur, ſeu eat, ac redeat certo tempore (erunt
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              autem itus, redituſque omnes æqui-temporanei, ſeu
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              tam primi, quam vltimi, tam longi, quàm breues
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              eiuſdem prorsù, durationis) ſitque tempus tantum,
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              quantum interſtitium ab vna artenæ pulſatione ad
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              aliam Vt fiat funis duplò intenſior, & itus, redituſ­
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              que ipſius euadant duplò velociores, hoc eſt æquali
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              tempore duo; quantum, putas, erit ponderis adden­
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              dum? </s>
              <s id="s.000522">An duplum? </s>
              <s id="s.000523">Non; ſed quadruplum. </s>
              <s id="s.000524">Et vt
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              fiat triplo, ſintque adeo itus redituſque eodem tem­
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              pore triplò velociores, ſeu plures: an triplum dum­
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              taxat' Nequaquam, verum nonuplum. </s>
              <s id="s.000525">Et vt qua­
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              druplò, an quadruplum? </s>
              <s id="s.000526">Haud certè, ſed ſexdecu­
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              plum. </s>
              <s id="s.000527">Cùm pondera porro æqualia primo ſuperad­
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              dita ſe perinde habeant ad creandum hanc velocita­
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              tem, ac partes æquales altitudinis, per quas pondus
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              demittitur: An non intelligi rursùs licet, quemadmo­
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              dum velocitas non acquiritur duplò maior ex dupli­
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              cato pondere, ſed planè ex quadruplicato; ita duplam
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              quoque non ex duplicata altitudine, ſed ex quadru­
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              plicata acquiri? </s>
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