Borro, Girolamo, De motu gravium et levium, 1575

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    <archimedes>
      <text>
        <body>
          <chap>
            <subchap1>
              <p type="main">
                <s id="s.000562">
                  <pb pagenum="78" xlink:href="011/01/098.jpg"/>
                  <emph type="italics"/>
                ſcere, aut in cælo moueri aſſeuerarunt, nunc ad illos confu­
                  <lb/>
                tandos aggrediemur, qui terram circum medium moueri
                  <lb/>
                credunt.
                  <emph.end type="italics"/>
                </s>
              </p>
            </subchap1>
            <subchap1>
              <p type="head">
                <s id="s.000563">Illorum falſa ſententia refellitur, qui
                  <expan abbr="terrã">terram</expan>
                circum
                  <lb/>
                medium moueri rebantur, & Heraclytea opi­
                  <lb/>
                nio euertitur, qui bonum, & malum cauſas
                  <lb/>
                eſſe cenſuit, à quibus ignis rerum om­
                  <lb/>
                nium materiale principium, vt
                  <lb/>
                & alia omnia moueantur.
                  <lb/>
                </s>
                <s id="s.000564">Caput VIII.</s>
              </p>
              <p type="main">
                <s id="s.000565">ILLI,
                  <emph type="italics"/>
                qui terram circum medium moueri crediderunt,
                  <lb/>
                hac potissimum ratione exploduntur: idem eſt naturalis
                  <lb/>
                motus totius, & partium, modo conſimiles ſint partes to­
                  <lb/>
                tius, & quælibet eædemque conſimiles terræ partes non in or­
                  <lb/>
                bem feruntur, ſed ad centrum natura deſcendunt: ergo tota
                  <lb/>
                terra in orbem non fertur, ſed ad centrum natura deſcendit.
                  <lb/>
                </s>
                <s id="s.000566">Aut duo motus naturales eiuſdem naturalis corporis erunt,
                  <lb/>
                alter ad medium, alter circum medium, ſedita comparatum
                  <lb/>
                eſt à natura, vt vnius corporis ſimplicis vnicus ſit motus ſim­
                  <lb/>
                plex, & vnius motus ſimplicis ſit vnicum corpus ſimplex, vt di
                  <lb/>
                ctum eſt libro primo de cælo, & mundo; terræ autem partes
                  <lb/>
                ſimplices deorſum natura feruntur; ergo & tota terra deor­
                  <lb/>
                ſum natura feretur, quo ſingulas totius terræ partes natura
                  <lb/>
                ferri diximus: ergo non in orbem vniuerſitas totius terræ na­
                  <lb/>
                tura conuertitur, quæ ſi in orbem conuerteretur, non natura,
                  <lb/>
                ſed violentia circumuolueretur. </s>
                <s id="s.000567">At nullum violentum poteſt
                  <lb/>
                eſſe diuturnum, ac
                  <expan abbr="ſempiternũ">ſempiternum</expan>
                , ergo motus terræ circum cen­
                  <lb/>
                trum diuturnus, ac ſempiternus non erit: verum certè vni-
                  <emph.end type="italics"/>
                </s>
              </p>
            </subchap1>
          </chap>
        </body>
      </text>
    </archimedes>
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