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

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s id="s.000246">
                <pb pagenum="54" xlink:href="010/01/062.jpg"/>
                <arrow.to.target n="marg57"/>
                <lb/>
              ſagitta exploſa minimè percutiet ſignum æquali ve­
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              locitate ictum fugiens; igitur manifeſtum eſt, aquam
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              minimè grauitatem exercere ſupra ei ſubiectam a­
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              quam, quando à proprio loco naturali exulat, & per
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              aerem mouetur. </s>
            </p>
            <p type="margin">
              <s id="s.000247">
                <margin.target id="marg57"/>
              Cap. 3. flui­
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              dum in ſuo
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              toto quie­
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              ſcens pon­
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              derat.</s>
            </p>
            <p type="main">
              <s id="s.000248">Secùs autem contingit in aqua quieſcente, iņ
                <lb/>
              puteo aliquo, vellacu, ſi enim diuidatur pariter in
                <lb/>
              laminas æque altas, patet quòd ſupremane dum
                <expan abbr="tã-git">tan­
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                git</expan>
              ſimpliciter ſubiectam aquæ laminam, ſed è con­
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              tra eam impellit tanta vi
                <expan abbr="quãta">quanta</expan>
              eſt energia eius gra­
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              uitatis, & patet quòd infima aqua pati cogitur com­
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              preſſionem, cùm ſuſtinere debeat pondus ſupremæ
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              aquæ incumbentis: & hoc accidit, quia ſua quiete
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              impedit progreſſum, & conatum compreſſiuum
                <expan abbr="de-orsũ">de­
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                orsum</expan>
              ſuperpoſitæ aquę; hac de cauſa ſi habueit poro­
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              ſitates hæ neceſſario conſtringentur à vi ponderis
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              incumbentis aquæ. </s>
              <s id="s.000249">Modò quia impulſus compreſſi­
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              uus factus à ſuperiore aqua ſupra inferiorem nullo
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              alio vocabulo deſignatur, quàm grauitatis, vel
                <expan abbr="põ-deris">pon­
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                deris</expan>
              , igitur verum erit, quòd aqua ſuper aquam
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                <arrow.to.target n="marg58"/>
                <lb/>
              quieſcentem grauitatem exercet non quando in mo­
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              tu conſtituitur, & extra ſuum naturalem locum, ſed,
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              tantummodò, quando ſiſtitur, & quieſcit in loco ſuo
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              naturali. </s>
            </p>
            <p type="margin">
              <s id="s.000250">
                <margin.target id="marg58"/>
              Contra do­
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              ctrinam ſu­
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              periùs addu­
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              ctam afferri
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              ſolet difficul
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              tas valdè
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              plauſibilis,
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              quod nimi­
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              rum vrina­
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              tores ingens
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              pondus aque
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              incumbentis
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              nec patian­
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              tur, nec ſen­
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              tiant.</s>
            </p>
            <p type="main">
              <s id="s.000251">Hiſce omnibus rationibus opponi ſolet
                <expan abbr="experiẽ-tia">experien­
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                tia</expan>
              ſatis vulgata, eſtque huiuſmodi: vrinatores iņ
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              profundo maris demerſi non ſentiunt, neque
                <expan abbr="patiũ-tur">patiun­
                  <lb/>
                tur</expan>
              compreſſionem ſuperincumbentis aquæ, quæ
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              multoties plures congios excedit; hinc inferunt, ſi </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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