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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            <s xml:id="echoid-s5864" xml:space="preserve">
              <pb o="247" file="0261" n="261" rhead="DE MAGNETE."/>
            corpus filorum repulit Boreum, tenuit immobilem ſuſpenſumque
              <lb/>
            polum Auſtralem. </s>
            <s xml:id="echoid-s5865" xml:space="preserve">2°. </s>
            <s xml:id="echoid-s5866" xml:space="preserve">Duo alia ejuſdem longitudinis fila contorſi
              <lb/>
            circa ſe mutuo, quæ ambo attraxerant uno extremo polum Boreum,
              <lb/>
            altero Auſtralem, & </s>
            <s xml:id="echoid-s5867" xml:space="preserve">reciproce repulerant, quemadmodum bona
              <lb/>
            Verſoria faciunt: </s>
            <s xml:id="echoid-s5868" xml:space="preserve">hæc in unum contorta & </s>
            <s xml:id="echoid-s5869" xml:space="preserve">bifido deſinentia capi-
              <lb/>
            te, uno extremo polum Verſorii Boreum attraxerunt, altero ex-
              <lb/>
            tremo repulerunt, utroque tamen ſui extremo repulerunt polum
              <lb/>
            Verſorii Auſtralem: </s>
            <s xml:id="echoid-s5870" xml:space="preserve">media parte ſuæ longitudinis obverſa cuſpidi
              <lb/>
            Boreæ Verſorii, eam tenuerunt immobilem, nec attrahentia nec re-
              <lb/>
            pellentia; </s>
            <s xml:id="echoid-s5871" xml:space="preserve">attrahebant nihilominus cuſpidem Auſtralem: </s>
            <s xml:id="echoid-s5872" xml:space="preserve">Eſt hoc
              <lb/>
            Experimentum illius indolis, ut non facile intelligatur, quamvis
              <lb/>
            clare deſcriptum, niſi quis ipſe repetierit, variiſque exploraverit
              <lb/>
            tentaminibus.</s>
            <s xml:id="echoid-s5873" xml:space="preserve"/>
          </p>
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        <div xml:id="echoid-div151" type="section" level="1" n="151">
          <head xml:id="echoid-head160" xml:space="preserve">EXPERIMENTUM CXXV.</head>
          <p>
            <s xml:id="echoid-s5874" xml:space="preserve">Filum ferreum, ſuper Magnete ductum, 4 longum pollices, al-
              <lb/>
            tera ſui extremitate repellebat utrumque Verſorii polum, alterâ at-
              <lb/>
            trahebat Boreum, fugabat Auſtralem: </s>
            <s xml:id="echoid-s5875" xml:space="preserve">extremum, quod utrumque
              <lb/>
            polum repulerat, ſupra lapidem malleo percuſſum & </s>
            <s xml:id="echoid-s5876" xml:space="preserve">applanatum fu-
              <lb/>
            gabat, ſed vi imbecilli, polum Boreum Verſorii, attrahebat Au-
              <lb/>
            ſtralem: </s>
            <s xml:id="echoid-s5877" xml:space="preserve">alterum fili extremum etiam applanatum malleo attrahebat
              <lb/>
            polum Boreum, repellebat exigua vi Auſtralem, intermedia fili
              <lb/>
            portio donabatur duobus punctis conſequentibus, quorum unum
              <lb/>
            repellebat, alterum attrahebat cuſpidem Verſorii Boream. </s>
            <s xml:id="echoid-s5878" xml:space="preserve">2°.
              <lb/>
            </s>
            <s xml:id="echoid-s5879" xml:space="preserve">Ducto hoc filo ſuper Magnetis polo Auſtrali, alterutra extremitas
              <lb/>
            obſervabatur allicere polum Verſorii Boreum, altera Auſtralem; </s>
            <s xml:id="echoid-s5880" xml:space="preserve">
              <lb/>
            tum percuſſo medio vi mallei, & </s>
            <s xml:id="echoid-s5881" xml:space="preserve">applanato ad longitudinem unius
              <lb/>
            pollicis, permanſit eadem in utraque extremitate vis directrix, ſed
              <lb/>
            multum debilitata, neque intermedia longitudo punctis conſequen-
              <lb/>
            ribus donata videbatur.</s>
            <s xml:id="echoid-s5882" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div152" type="section" level="1" n="152">
          <head xml:id="echoid-head161" xml:space="preserve">EXPERIMENTUM CXXVI.</head>
          <p>
            <s xml:id="echoid-s5883" xml:space="preserve">Duo exploravi fila ferrea 4 pollicum, quæ Magneti affricta, uno
              <lb/>
            extremo attrahebant polum Verſorii Boreum, altero Auſtralem, </s>
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