Archimedes, Archimedis De iis qvae vehvntvr in aqva libri dvo

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DE IIS QVAE VEH. IN AQVA.
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        <div type="section" level="1" n="21">
          <p>
            <s xml:space="preserve">
              <pb o="10" file="0031" n="31" rhead="DE IIS QVAE VEH. IN AQVA."/>
            æqualis magnitudini f a; </s>
            <s xml:space="preserve">ſitq, ipſi f æqualis n: </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">ipſi a æ-
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            qualis i. </s>
            <s xml:space="preserve">magnitudinis autem f a grauitas ſit b: </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">magni-
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            tudinis n i grauitas o r; </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">ipſius i ſit r. </s>
            <s xml:space="preserve">magnitudo igi-
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            tur f a ad n i eam proportionem habet, quam grauitas b
              <lb/>
            ad grauitatem or. </s>
            <s xml:space="preserve">Sed quoniam magnitudo f a in humi-
              <lb/>
            dum demiſſa leuior eſt humido; </s>
            <s xml:space="preserve">patet tantam humidi mo-
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            lem, quanta eſt pars magnitudin_i_s demerſa, eandem quam
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            magnitudo f a habere grauitatem. </s>
            <s xml:space="preserve">hoc enim ſuperius de-
              <lb/>
              <anchor type="note" xlink:label="note-0031-01a" xlink:href="note-0031-01"/>
            monſtratum eſt. </s>
            <s xml:space="preserve">Atipſi a reſpondet humidum i, cuius qui
              <lb/>
            dem grauitas eſt r; </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">ipſius f a grauitas b. </s>
            <s xml:space="preserve">ergo b graui-
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            tas eius, quod habet molem æqualem toti magnitudini
              <lb/>
            f a, æqualis erit grauitati humidi i, uidelicetipſi r. </s>
            <s xml:space="preserve">Et quo
              <lb/>
            niam ut magnitudo f a ad humidum n i ſibi reſpondens,
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            ita eſt b ad o r: </s>
            <s xml:space="preserve">eſt autem b æqualis ipſi r: </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">utr ad o r, ita
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            i ad n i; </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">a ad f a. </s>
            <s xml:space="preserve">Sequitur ut f a ad humidum æqualis
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              <anchor type="note" xlink:label="note-0031-02a" xlink:href="note-0031-02"/>
            molis eam in grauitate proportionem habeat, quam ma-
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            gnitudo a habet ad f a. </s>
            <s xml:space="preserve">quod demonſtrare oportebat.</s>
            <s xml:space="preserve"/>
          </p>
          <div type="float" level="2" n="1">
            <figure xlink:label="fig-0030-01" xlink:href="fig-0030-01a">
              <image file="0030-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/4E7V2WGH/figures/0030-01"/>
            </figure>
            <note position="right" xlink:label="note-0031-01" xlink:href="note-0031-01a" xml:space="preserve">5. priml
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            huius.</note>
            <note position="right" xlink:label="note-0031-02" xlink:href="note-0031-02a" xml:space="preserve">11. quinta
              <unsure/>
            </note>
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        <div type="section" level="1" n="22">
          <head xml:space="preserve">PROPOSITIO II.</head>
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              <emph style="sc">Recta</emph>
            portio conoidis rectanguli, quando
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              <anchor type="note" xlink:label="note-0031-03a" xlink:href="note-0031-03"/>
            axem habuerit minorem, quam ſeſquialterum
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            eius, quæ uſque ad axem, quamcunque propor-
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            tionem habens ad humidum in grauitate; </s>
            <s xml:space="preserve">demiſ
              <lb/>
            ſa in humidum, ita ut baſis ipſius humidum non
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            contingat; </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">poſita inelinata, non manebit incli
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            nata; </s>
            <s xml:space="preserve">ſed recta reſtituetur. </s>
            <s xml:space="preserve">Rectam dico conſi-
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            ſtere talem portionem, quando planum quod ip
              <lb/>
            ſam ſecuit, ſuperficiei humidi fuerit æquidiſtans.</s>
            <s xml:space="preserve"/>
          </p>
          <div type="float" level="2" n="1">
            <note position="right" xlink:label="note-0031-03" xlink:href="note-0031-03a" xml:space="preserve">A</note>
          </div>
          <p>
            <s xml:space="preserve">SIT portio rectanguli conoidis, qualis dicta eſt; </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">ia-</s>
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