Casati, Paolo, Terra machinis mota : dissertationes geometricae, mechanicae physicae hydrostaticae

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        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="018/01/118.jpg" pagenum="104"/>
              ex B intelligatur educta perpendiculatis BE,
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              & in triangulo rectangulo ABE, datis angu­
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              lo A & latere AB, inueniatur latus BE. </s>
              <s>De­
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              mum quia triangula ABE, ADC rectangula
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              habentia communem angulum ad A ſunt ſi
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              milia, fiat vt AB data ad BE inuentam, ita
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              AD lineæ opticæ longitudo inuenta ad DC
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              quæſitam terræ ſemidiametrum. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="note48"/>
                <emph type="italics"/>
              XLVIII
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              Inuenirę
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                <expan abbr="longitudinẽ">longitudinem</expan>
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              viſus: & ex
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              ea Quintą
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              methodus
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              vestigandi
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              terræ ſemi­
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              diametrum,
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              </s>
            </p>
            <p type="main">
              <s>
                <emph type="italics"/>
              Merſ.
                <emph.end type="italics"/>
              </s>
              <s> In ijs, quæ hactenus attuliſti ad
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              terræ ſemidiametrum inueniendam, illud
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              accidit incommodum, quod totam altitu­
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              dinem ſupra maris ſuperficiem innoteſcere
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              oportet: id quod haberi non poteſt, niſi aut
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              prærupta rupes mari immineat, aut turris in
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              litore ſit conſtituta. </s>
              <s>Quin methodum ali­
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              quam excogitas, qua etiam ex turri procul ab
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              æquore in colle poſitâ explorare poſſimus,
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              quanta ſit terræ magnitudo? </s>
            </p>
            <p type="main">
              <s>
                <emph type="italics"/>
              Guld.
                <emph.end type="italics"/>
              </s>
              <s> Tentemus pariter, quid poſſimus:
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              tertius adeſt Galilæus; niſi aliquid inueneri­
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                <arrow.to.target n="note49"/>
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              mus, dicam nos iratis Muſis conueniſſe. </s>
              <s>Sit
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              igitur in perpendiculari AC, nota inſignis
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              aliqua altitudo BA, at non talis, vt eius hu­
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              millimum punctum B ſphæricæ ſuperficiei
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              adhæreat, cum potiùs ex illâ emineat iņ
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              colle DB, cuius altitudo ignota eſt: fieri au­
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              tem poſſit, vt liber proſpectus in Horizon­
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              tem pateat, ſiue in ſummo A, ſiue in imo B </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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