Gassendi, Pierre, De proportione qua gravia decidentia accelerantur, 1646

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      <text>
        <body>
          <chap>
            <p type="main">
              <s id="s.001666">
                <pb pagenum="216" xlink:href="028/01/256.jpg"/>
              videlicet
                <emph type="italics"/>
              motum, eiuſque accelerationem effectum eſſe
                <lb/>
              Phyſicum, qui per parteis maiores, aut minores pro ratione
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              ponderis, & reſiſtentia medij metiendus videatur.
                <emph.end type="italics"/>
              </s>
              <s id="s.001667"> Igitut
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              aër non tantum reſiſtit ſupernè, vt omnes admittunt,
                <lb/>
              ſed etiam infernè, vt tu quoque admittis (& certè vi­
                <lb/>
              detur tantò maior eſſe debere infernè reſiſtentia, quan­
                <lb/>
              tò aër craſſior eſt, & propter terram ſuppoſitam diffici­
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              liùs diffundi, ac dilabi poteſt; ſed hoc parùm eſt.) Aut
                <lb/>
              ergo reſiſtentia aëris infernè eſt maior, quàm impulſio
                <lb/>
              ſupernè, aut æqualis, aut minor. </s>
              <s id="s.001668">Si dicas maiorem;
                <lb/>
              igitur motus rei cadentis non accelerationem ab aëre,
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              ſed retardationem patietur. </s>
              <s id="s.001669">Si æqualem; igitur motus
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              non acecl
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              rabitur, ſed vno ſemper tenore erit. </s>
              <s id="s.001670">Si mi­
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              norem, igitur cum tota vis aëris ſupernè impellens ſit
                <lb/>
              ab ipſa vi lapidis infernè aërem vtgentis, erit effectus
                <lb/>
              potentior cauſſa; & exſiſtente aëre, quaſi flagello, quo
                <lb/>
              lapis ſeipſum quaſi verberet, fiet flagelli adactio,
                <lb/>
              quam intentatio rapidior; &, vt verbo dicam, mouebi­
                <lb/>
              tur aër velociùs à tergo, quàm refugiat à fronte; ſic­
                <lb/>
              que neceſſariò relinquet locum in medio vacuum:
                <lb/>
              quod vt repugnat, ſic clarum eſt, non poſse aerem ve­
                <lb/>
              lociùs accedere, quàm abſcedat: cùm etiam ex ſe tantò
                <lb/>
              moueatur ſegniùs, quantò longiùs ab
                <gap/>
              t à cauſſa mo­
                <lb/>
              uente. </s>
              <s id="s.001671">Ac vt præteream, ſi id dicas, idem prorsùs fo­
                <lb/>
              re dicendum de aere, dum lapis ſeu ſurſum, ſeu alior­
                <lb/>
              ſum compellitur: prætereo quoque non fore quam­
                <lb/>
              obrem cauſſemur aerem ſuâ reſiſtentiâ retardare tan­
                <lb/>
              tillum motum, cùm illum potiùs ſit promoturus; ne­
                <lb/>
              que quamobrem concludamus aerem quicquam re­
                <lb/>
              ſiſtere, cùm nullum ſit reſiſtentiæ ipſius futurum indi-</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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