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

Table of figures

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s id="s.000854">
                <pb pagenum="169" xlink:href="010/01/177.jpg"/>
                <arrow.to.target n="marg216"/>
              </s>
            </p>
            <p type="margin">
              <s id="s.000855">
                <margin.target id="marg215"/>
              Cap. 4. poſi­
                <lb/>
              tiuam leui­
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              tatem noņ
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              dari.</s>
            </p>
            <p type="margin">
              <s id="s.000856">
                <margin.target id="marg216"/>
              Cap. 4. poſi­
                <lb/>
              tiuam leui­
                <lb/>
              tatem noņ
                <lb/>
              dari.</s>
            </p>
            <p type="main">
              <s id="s.000857">His declaratis accedamus iam ad difficultates ad­
                <lb/>
              uerſarij, in quibus ſupponit, quòd dum ligneus cy­
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              lindrus GE exquiſito, & immediato contactu fundo
                <lb/>
              vaſis adhæret, ipſumque veluti exoſculatur, licèt vas </s>
            </p>
            <p type="main">
              <s id="s.000858">
                <arrow.to.target n="marg217"/>
                <lb/>
              repletum aqua fuerit, lignum ſponte ſua, & vi eius
                <lb/>
              leuitatis ſursùm aſcendere deberet. </s>
              <s id="s.000859">Sed quid facies,
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              ſi experimentum huic aſſertioni refragatur? </s>
              <s id="s.000860">Et pro­
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              cùl dubio ſi experimentum ita ſe haberet, vt ab ipſo
                <lb/>
              refertur, ſcilicèt ſi cylindrus ligneus GE exquiſitè
                <lb/>
              tangens ſuperficiem fundi vaſis BG complanatam,
                <lb/>
              & lęuigatam, eſſetque vas aqua repletum, & nihilo­
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              minus lignum ſursùm aſcenderet, neceſſariò aſſerere
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              teneremur, & confiteri, lignum, non à principio ex­
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              trinſeco per extruſionem, ſed à vi naturali leuitatis
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              eius aſcendere. </s>
            </p>
            <p type="margin">
              <s id="s.000861">
                <margin.target id="marg217"/>
              Experimen­
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              tum falſum
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              aduerſarij
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              pro leuitate
                <lb/>
              poſitiua.</s>
            </p>
            <p type="main">
              <s id="s.000862">
                <emph type="center"/>
              PROP. LXXXII.
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000863">
                <emph type="center"/>
                <emph type="italics"/>
              Experimentis euincitur non ob defectum leuitatis poſitiuæ,
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              ſed quia extruſio à medio fluido grauiori fieri non po­
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              test, lignum in aquæ fundo quieſcere.
                <emph.end type="italics"/>
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000864">VErùm quia lignum EG in aqua demerſum non
                <lb/>
              aſcendit è fundo vaſis cui adhæret, imò ibidem
                <lb/>
              ſiſtitur, & quieſcit, igitur
                <expan abbr="">non</expan>
              ineſt in ligno cauſa ima­
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              ginata, quæ leuitas poſitiua vocatur. </s>
              <s id="s.000865">E contrà quo­
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              tieſcumque fieri, & exerceri poteſt extruſio medij
                <lb/>
              fluidi, ideſt quotieſcumque fluidum grauius fluerę
                <lb/>
              poteſt, & inſinuari infra cylindrum ligneum, ſemper
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              ſubſequitur effectus aſcenſus illius, at quando (vt </s>
            </p>
          </chap>
        </body>
      </text>
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