Musschenbroek, Petrus van, Physicae experimentales, et geometricae de magnete, tuborum capillarium vitreorumque speculorum attractione, magnitudine terrae, cohaerentia corporum firmorum dissertationes: ut et ephemerides meteorologicae ultraiectinae

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        <div xml:id="echoid-div66" type="section" level="1" n="66">
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            <s xml:id="echoid-s2684" xml:space="preserve">
              <pb o="110" file="0124" n="124" rhead="DISSERTATIO"/>
            lo B, ſeparabitur a reliquis. </s>
            <s xml:id="echoid-s2685" xml:space="preserve">Loco globulorum ferreorum idem Ex-
              <lb/>
            perimentum etiam optime inſtituitur cum acubus, quæ ex ſuis ſu-
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            ſpenſæ extremis, ſibi adhæreſcendo longam conſtituunt ſeriem, ſi
              <lb/>
            circa infimam Magnes B S circumagatur, eam fugabit, atque in
              <lb/>
            circulum deducet, uti etiam eleganter adnotavit Cl. </s>
            <s xml:id="echoid-s2686" xml:space="preserve">Wolfius in
              <lb/>
            Meditat, Ingen. </s>
            <s xml:id="echoid-s2687" xml:space="preserve">Tom. </s>
            <s xml:id="echoid-s2688" xml:space="preserve">3. </s>
            <s xml:id="echoid-s2689" xml:space="preserve">Si vero polus S, Magnetis B S Acui infi-
              <lb/>
            mæ obferatur, hæc illi advolabit extemplo.</s>
            <s xml:id="echoid-s2690" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div67" type="section" level="1" n="67">
          <head xml:id="echoid-head75" xml:space="preserve">EXPERIMENTUM XLVII.</head>
          <p>
            <s xml:id="echoid-s2691" xml:space="preserve">Si polo Magnetis majorum virium apponatur aliquod oblongum
              <lb/>
            Ferrum, jacens in plano horizontali lævigato, alterique extremo
              <lb/>
            Ferri polus alterius nominis, ſed Magnetis debilioris virtutis appli-
              <lb/>
            cetur, huic Magneti lente retro tracto, ut Ferrum in plano ma-
              <lb/>
            neat, ſæpe adhærebit Ferrum, avulſum a fortiori Magnete.</s>
            <s xml:id="echoid-s2692" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2693" xml:space="preserve">Plurimi hunc obſervaverunt effectum, uti Kircherus in Lib. </s>
            <s xml:id="echoid-s2694" xml:space="preserve">de
              <lb/>
            Magn. </s>
            <s xml:id="echoid-s2695" xml:space="preserve">Gaſſendus ad Diog. </s>
            <s xml:id="echoid-s2696" xml:space="preserve">Laërt. </s>
            <s xml:id="echoid-s2697" xml:space="preserve">p. </s>
            <s xml:id="echoid-s2698" xml:space="preserve">205. </s>
            <s xml:id="echoid-s2699" xml:space="preserve">Rohaultus in Phyſic.
              <lb/>
            </s>
            <s xml:id="echoid-s2700" xml:space="preserve">part. </s>
            <s xml:id="echoid-s2701" xml:space="preserve">3. </s>
            <s xml:id="echoid-s2702" xml:space="preserve">Cap. </s>
            <s xml:id="echoid-s2703" xml:space="preserve">8. </s>
            <s xml:id="echoid-s2704" xml:space="preserve">§. </s>
            <s xml:id="echoid-s2705" xml:space="preserve">54. </s>
            <s xml:id="echoid-s2706" xml:space="preserve">de la Hire in L’Hiſt. </s>
            <s xml:id="echoid-s2707" xml:space="preserve">de L’Acad. </s>
            <s xml:id="echoid-s2708" xml:space="preserve">Roy. </s>
            <s xml:id="echoid-s2709" xml:space="preserve">
              <lb/>
            A°. </s>
            <s xml:id="echoid-s2710" xml:space="preserve">1717.</s>
            <s xml:id="echoid-s2711" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div68" type="section" level="1" n="68">
          <head xml:id="echoid-head76" xml:space="preserve">EXPERIMENTUM XLVIII.</head>
          <p>
            <s xml:id="echoid-s2712" xml:space="preserve">Acus Magnetica ponatur in æquatore Magnetis Sphærici, pa-
              <lb/>
            rallele ad axin Magnetis, acus extremo apponatur regula ferrea, quæ
              <lb/>
            ei adhærebit tam firmiter, ut regula eam circum ducere circa totum
              <lb/>
            Magnetem queat, & </s>
            <s xml:id="echoid-s2713" xml:space="preserve">in ſitum quemcunque protrahere.</s>
            <s xml:id="echoid-s2714" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div69" type="section" level="1" n="69">
          <head xml:id="echoid-head77" xml:space="preserve">EXPERIMENTUM XLIX.</head>
          <p>
            <s xml:id="echoid-s2715" xml:space="preserve">Tab. </s>
            <s xml:id="echoid-s2716" xml:space="preserve">6. </s>
            <s xml:id="echoid-s2717" xml:space="preserve">fig. </s>
            <s xml:id="echoid-s2718" xml:space="preserve">1. </s>
            <s xml:id="echoid-s2719" xml:space="preserve">Si Magneti præſtantis virtutis A adhæſeritſphæ-
              <lb/>
            rula ferrea B, attracta, atque regula ferrea C D tetigerit punctum
              <lb/>
            Sphæræ oppoſitum puncto contactus cum Magnete; </s>
            <s xml:id="echoid-s2720" xml:space="preserve">poterit regula
              <lb/>
            C D adimere Sphæram a Magnete, ſed ſi Magnes debilium fuerit
              <lb/>
            virium, tum regula non poterit Sphæram B a Magnete avellere: </s>
            <s xml:id="echoid-s2721" xml:space="preserve">Cl.
              <lb/>
            </s>
            <s xml:id="echoid-s2722" xml:space="preserve">de la Hirius inſtituens hoc Experimentum cum duabus regulis fer-
              <lb/>
            reis, quarum ea minima erat, quæ adhærebat Magneti, notat, </s>
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