Biancani, Giuseppe, Aristotelis loca mathematica, 1615

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    <archimedes>
      <text>
        <body>
          <chap>
            <pb pagenum="128" xlink:href="009/01/128.jpg"/>
            <p type="head">
              <s id="s.002189">
                <emph type="italics"/>
              Problema Primum.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="head">
              <s id="s.002190">Cur oriente, aut occumbente Sole, Iris ſemicirculus eſt?</s>
            </p>
            <p type="main">
              <s id="s.002191">Cauſa huius hæc eſt; ſupra enim dictum eſt, in omni Iridis appari­
                <lb/>
              tione tria hæc, Solem, oculum, & Iridis centrum eſſe in eadem re­
                <lb/>
              cta linea, v. g. in linea A C D, præcedentis figuræ, cum igitur Sol
                <lb/>
              tam oriens, quam occidens ſit in horizonte, v. g. in A, horizontis
                <lb/>
              puncto, ſimiliter oculus ſit in C, horizontis centro, conſectarium eſt, cen­
                <lb/>
              trum etiam Iridis D, eſſe pariter in horizontis ſuperficie, quare ſecabitur
                <lb/>
              ab horizonte per centrum, vnde etiam ſequitur ipſius Iridis portionem
                <lb/>
              E B F, quæ ſupra horizontem extat eſſe ſemicirculum. </s>
              <s id="s.002192">Quod ſi horizon non
                <lb/>
              obſtaret,
                <expan abbr="integrũ">integrum</expan>
              Iris compleret orbem,
                <expan abbr="cernereturq́">cernereturque</expan>
              ; toto ambitu B F M E.</s>
            </p>
            <p type="head">
              <s id="s.002193">An
                <expan abbr="quandoq́">quandoque</expan>
              ; maior ſemicirculo appareat?</s>
            </p>
            <p type="head">
              <s id="s.002194">
                <emph type="italics"/>
              Problema Secundum.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s id="s.002195">Maior quidem, imò etiam integer circulus, ſed ab oculo in ſummitate
                <lb/>
              montis conſtituto,
                <expan abbr="Soleq́">Soleque</expan>
              ; iam multum eleuato videri poteſt, vt in
                <lb/>
              hac ſecunda figura cernitur, vbi euecto Sole ad locum E, ſupra horizontem
                <lb/>
                <figure id="id.009.01.128.1.jpg" place="text" xlink:href="009/01/128/1.jpg" number="66"/>
                <lb/>
              A B, poterit oculus in vertice montis C, poſitus Iridem F G H I, comple­
                <lb/>
              tam videre, quia infra lineam E C D, in qua exiſtunt Sol, oculus, & Iridis
                <lb/>
              centrum, nihil eſt ad partes D, vbi nubes irrorat, quod Iridis apparitioni
                <lb/>
              ſit impedimento.</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>