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-div21" type="section" level="1" n="21">
          <pb o="33" file="0047" n="47" rhead="DE MAGNETE."/>
          <note position="right" xml:space="preserve">
            <lb/>
          # Lin. # gran.
            <lb/>
          # 6 # 131
            <lb/>
          # 4 # 172
            <lb/>
          # 0 # 340
            <lb/>
          </note>
          <note position="right" xml:space="preserve">
            <lb/>
          # Lin. # gran. # repulſion.
            <lb/>
          # 6 # 25 {1/2} # 156 {1/2}
            <lb/>
          # 4 # 29 # 201
            <lb/>
          # 0 # 44 # 384
            <lb/>
          </note>
          <p>
            <s xml:id="echoid-s728" xml:space="preserve">Attendens autem ad numeros, ſummam repulſionis exprimentes,
              <lb/>
            inter eos & </s>
            <s xml:id="echoid-s729" xml:space="preserve">diſtantias conſtantem proportionem non animadvertere
              <lb/>
            potui, ſed ſi quædam obtineat, non erit alta, & </s>
            <s xml:id="echoid-s730" xml:space="preserve">minor quam ſim-
              <lb/>
            plex inverſa diſtantiarum, incipiendo ſupputationem a contactu ipſo:
              <lb/>
            </s>
            <s xml:id="echoid-s731" xml:space="preserve">nam 6. </s>
            <s xml:id="echoid-s732" xml:space="preserve">4:</s>
            <s xml:id="echoid-s733" xml:space="preserve">: 201. </s>
            <s xml:id="echoid-s734" xml:space="preserve">134. </s>
            <s xml:id="echoid-s735" xml:space="preserve">loco 156 {1/2}. </s>
            <s xml:id="echoid-s736" xml:space="preserve">tum 7. </s>
            <s xml:id="echoid-s737" xml:space="preserve">6:</s>
            <s xml:id="echoid-s738" xml:space="preserve">: 156 {1/2}. </s>
            <s xml:id="echoid-s739" xml:space="preserve">134 {1/7}. </s>
            <s xml:id="echoid-s740" xml:space="preserve">loco 139. </s>
            <s xml:id="echoid-s741" xml:space="preserve">
              <lb/>
            tum 10. </s>
            <s xml:id="echoid-s742" xml:space="preserve">7:</s>
            <s xml:id="echoid-s743" xml:space="preserve">: 139. </s>
            <s xml:id="echoid-s744" xml:space="preserve">97 {3/10} loco 111. </s>
            <s xml:id="echoid-s745" xml:space="preserve">tum 12. </s>
            <s xml:id="echoid-s746" xml:space="preserve">10:</s>
            <s xml:id="echoid-s747" xml:space="preserve">: 111. </s>
            <s xml:id="echoid-s748" xml:space="preserve">92 {3/4}. </s>
            <s xml:id="echoid-s749" xml:space="preserve">loco 94 {1/2}. </s>
            <s xml:id="echoid-s750" xml:space="preserve">
              <lb/>
            Attamen non dubito, quin conſtans proportio obtineat inter diſtan-
              <lb/>
            tias & </s>
            <s xml:id="echoid-s751" xml:space="preserve">repulſiones, modo hæ ſolæ, ſeparatæque ab omni alia cauſa
              <lb/>
            haberentur, imo attractiones ſolæ etiam in conſtanti ratione eſſe poſ-
              <lb/>
            ſunt, ſed turbantur forſitan a repulſionibus: </s>
            <s xml:id="echoid-s752" xml:space="preserve">nam uterque polus Mag-
              <lb/>
            netis vim repellentem æque oſtendit, ac attrahentem: </s>
            <s xml:id="echoid-s753" xml:space="preserve">& </s>
            <s xml:id="echoid-s754" xml:space="preserve">idcir-
              <lb/>
            co ex eodem polo vis attrahens & </s>
            <s xml:id="echoid-s755" xml:space="preserve">repellens exibit: </s>
            <s xml:id="echoid-s756" xml:space="preserve">quando poli Mag-
              <lb/>
            netum duorum ſibi amici obvertuntur, attractio præpollet repulſio-
              <lb/>
            ni; </s>
            <s xml:id="echoid-s757" xml:space="preserve">quando inimici ſe reſpiciunt poli, repulſio ſuperat attractionem; </s>
            <s xml:id="echoid-s758" xml:space="preserve">
              <lb/>
            quare ſemper actio datur compoſita ex attractione & </s>
            <s xml:id="echoid-s759" xml:space="preserve">repulſione: </s>
            <s xml:id="echoid-s760" xml:space="preserve">un-
              <lb/>
            de proportiones duæ componentes actionem in Experimentis obſerva-
              <lb/>
            tam, forent ex quantitatibus notatis extricandæ a ſe invicem, ut
              <lb/>
            ſolæ haberentur, quod difficillimum erit; </s>
            <s xml:id="echoid-s761" xml:space="preserve">nec prius veram propor-
              <lb/>
            tionem attractionis & </s>
            <s xml:id="echoid-s762" xml:space="preserve">repulſionis determinare poterimus. </s>
            <s xml:id="echoid-s763" xml:space="preserve">In hac
              <lb/>
            itaque rerum caligine, præſtabit ſuspendiſſe adhuc judicium, & </s>
            <s xml:id="echoid-s764" xml:space="preserve">can-
              <lb/>
            dide memoraſſe obſervationes, ex quibus ſerior ſapientiorque ætas
              <lb/>
            multa forte eruet, poſtquam plura data hoc in negotio acceperit: </s>
            <s xml:id="echoid-s765" xml:space="preserve">
              <lb/>
            Neque noſtrum ſilentium dedecori erit, cum ſapientiſſimi Philoſophi
              <lb/>
            Florentini de Magnete agentes, etiam Experimenta tantummodo at-
              <lb/>
            tulerint, nihil ratiocinii addentes, neque ullas ex iis elicientes ſeque-
              <lb/>
            las, ne ficta pro veris, ſive hypotheſin loco demonſtrationis darent,
              <lb/>
            carbonemque pro theſauro relinquerent.</s>
            <s xml:id="echoid-s766" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s767" xml:space="preserve">Quum his Experimentis inſtitutis nullam virium proportio-
              <lb/>
            nem inveneram, cæpi ſuspicari, an quidem unquam iis modis,
              <lb/>
            quibus tentamina feci, poſſet virium proportio detegi in variis di-
              <lb/>
            ſtantiis, etiamſi quædam daretur, quoniam Magnetes ambo in </s>
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