Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s id="s.002680">
                <pb pagenum="505" xlink:href="010/01/513.jpg"/>
                <arrow.to.target n="marg708"/>
                <lb/>
              ſed etiam nullius roboris, quia licet in motu circu­
                <lb/>
              lari Rotæ ſolidæ
                <expan abbr="nõ">non</expan>
              appareat neceſſitas vacui, nihilo­
                <lb/>
              minus præcipua difficultas eſt non de motu circula­
                <lb/>
              ri, ſed de motu directo, vel per lineas curuas irregu­
                <lb/>
              lares in fluido, in quo ſenſu non conſtat, neque de­
                <lb/>
              monſtratur partes fluidi excurrere intra alias poſſe,
                <lb/>
              abſque eo quod mutuò ſe ſe confricent, inuertantur,
                <lb/>
              & inter ſe innumeras exiguas vacuitates admittant.
                <lb/>
              </s>
              <s id="s.002681">imò in poſtrema parte huius capitis oſtendemus ne­
                <lb/>
              ceſſariam eſſe vacui admiſſionem, ad hoc, vt fluidum,
                <lb/>
              vel
                <expan abbr="dẽſum">denſum</expan>
              corpus per fluidum moueri queat; ſed mo­
                <lb/>
              dò ſatis eſt oſtendiſſe non eſſe euidens, nec demon­
                <lb/>
              ſtratum fuiſſe, quod in motu facto in fluidis vacuum
                <lb/>
              neceſſario non exigatur. </s>
            </p>
            <p type="margin">
              <s id="s.002682">
                <margin.target id="marg708"/>
              Cap. 12. dę
                <lb/>
              vacui neceſ­
                <lb/>
              ſitate.</s>
            </p>
            <p type="main">
              <s id="s.002683">Secundò,
                <emph type="italics"/>
              Vacuum non eſt cauſa motus, ſed Natura, ergo
                <lb/>
              vacuum non datur.
                <emph.end type="italics"/>
              </s>
              <s id="s.002684"> Cui reſponderi poteſt, neminem,
                <lb/>
              niſi planè delirum, ac ſtolidum, ſomniaſſe
                <expan abbr="vacuũ">vacuum</expan>
              , ſci­
                <lb/>
              licèt nihilum, cauſam poſitiuam
                <expan abbr="efficiẽtem">efficientem</expan>
              motus eſ­
                <lb/>
              ſe. </s>
              <s id="s.002685">Dixerunt certè Antiqui motum produci à natura,
                <lb/>
              ſiue à qualibet cauſa externa impulſiua, ſed requiri
                <lb/>
              vacuum veluti locus in quo motus fieri poſſit, igitur
                <lb/>
              Ariſtotelis
                <expan abbr="argumẽtum">argumentum</expan>
              nil officit vacui aſſertoribus. </s>
            </p>
            <p type="main">
              <s id="s.002686">Tertiò ait: quod
                <emph type="italics"/>
              accidit dicentibus vacuum eſſe neceſ-
                <emph.end type="italics"/>
                <lb/>
                <arrow.to.target n="marg709"/>
                <lb/>
                <emph type="italics"/>
              ſarium, vt motus ſit contrarium potiùs, nam dato vacuo nil
                <lb/>
              in eo moueri poſſet, quia non eſt quo magis, aut minus mouea­
                <lb/>
              tur, quod namque vacuum eſt, caret omni differentia
                <emph.end type="italics"/>
              , ſcili­
                <lb/>
              cèt non habet ſursùm, neque deorsùm, nec ante, nec
                <lb/>
              retro, &c. </s>
              <s id="s.002687">Cui reſponderi poteſt, quod motus, quate­
                <lb/>
              nus talis eſt, dicit ſolummodò migrationem, & tran-</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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