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

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s id="s.000913">
                <pb pagenum="179" xlink:href="010/01/187.jpg"/>
                <arrow.to.target n="marg230"/>
                <lb/>
              æqualis erit differentiæ prædictarum oppoſitarum
                <lb/>
              celeritatum, & ideò aer G deſcendet duplo tardiùs
                <lb/>
              aqua ambiente; Quòd verò hoc ſit falſum, experien­
                <lb/>
              tia ipſa docet ſi nimirùm aqua DE atro colore tinga­
                <lb/>
              tur, vel diſperſo puluere terreſtri pauliſper turbida
                <lb/>
              reddatur, tunc procùl dubio particulæ illæ arenoſæ
                <lb/>
              graues, aut ob exiguitatem in ipſa aqua dum quieſcit
                <lb/>
              non deſcendunt, vel lento motu deorsùm feruntur a
                <lb/>
              vi maioris grauitatis
                <expan abbr="earũ">earum</expan>
              . </s>
              <s id="s.000914">igitur quando aqua deor­
                <lb/>
              sùm fluit, videtur impoſſibile vt grauiores particulæ
                <lb/>
              arenoſæ minori velocitate transferantur deorsùm̨,
                <lb/>
              quàm aqua ipſa in qua degunt, quare bulla aerea G
                <lb/>
              quæ vt leuis ſursùm aſcendere ſupponitur, non poſſet
                <lb/>
              pari velocitate ſimul
                <expan abbr="">cum</expan>
              particulis terreis aquæ tur­
                <lb/>
              bidæ deorsùm deſcendere, ſed hoc eſt falſum, cum
                <lb/>
              abſque vlla differentia velocitatis deorsùm feran­
                <lb/>
              tur vnà cum aqua turbida cylindri fluentis, igitur ve­
                <lb/>
              rum non eſt, quòd aer G moueatur ſursùm à vi natu­
                <lb/>
              ralis leuitatis eius translatus, cùm
                <expan abbr="aliũdè">aliundè</expan>
              quando re­
                <lb/>
              uera aer G principium motiuum leuitatis in ſe habe­
                <lb/>
              ret non poſſet vllo pacto in aqua ipſum
                <expan abbr="">non</expan>
              exercere. </s>
            </p>
            <p type="margin">
              <s id="s.000915">
                <margin.target id="marg230"/>
              Cap. 4. poſi­
                <lb/>
              tiuam leui­
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              tatem noņ
                <lb/>
              dari.</s>
            </p>
            <p type="main">
              <s id="s.000916">
                <emph type="center"/>
              PROP. LXXXVIII.
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000917">
                <emph type="center"/>
                <emph type="italics"/>
              Confirmatur aerem ab ambiente aqua per extruſionem ſur­
                <lb/>
              sùm impelli.
                <emph.end type="italics"/>
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000918">EContrà quandò globus aereus G nullam pror­
                <lb/>
              sùs leuitatem haberet, & ſolummodò per ex
                <lb/>
              truſionem factam à grauitate fluidi ambientis eleua-</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>