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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              <pb o="32" file="0046" n="46" rhead="DISSERTATIO"/>
            nearum, dein decreſcunt, donec in immediato contactu repulſio tan-
              <lb/>
            tum ſit æqualis 13 granis; </s>
            <s xml:id="echoid-s709" xml:space="preserve">quid igitur eſt in Magnetibus, quod hanc
              <lb/>
            Anomaliam producit? </s>
            <s xml:id="echoid-s710" xml:space="preserve">an dicam Lapidem, qui examini inſerviit,
              <lb/>
            conſtare ex partibus valde heterogeneis, quarum quædam attrahunt,
              <lb/>
            quædam repellunt, & </s>
            <s xml:id="echoid-s711" xml:space="preserve">quæ ambæ vires oppoſitæ ex eodem loco Ma-
              <lb/>
            guetis effluunt, hinc turbantes proportionem vel ſimplicis repulſio-
              <lb/>
            nis vel attractionis? </s>
            <s xml:id="echoid-s712" xml:space="preserve">veroſimile hoc apparet, quamobrem qui ſolam
              <lb/>
            repulſionem cognoſcere vellet, perſpectam habere deberet vim At-
              <lb/>
            trahentem eorundem polorum, eamque addere virtuti repellenti ob-
              <lb/>
            ſervatæ, tum ſumma indicaret totam vim repellentem: </s>
            <s xml:id="echoid-s713" xml:space="preserve">Attractionem
              <lb/>
            autem ſimul cum repulſione dari patet ex Experimento XIII. </s>
            <s xml:id="echoid-s714" xml:space="preserve">in
              <lb/>
            quo ad diſtantiam 3 pollic. </s>
            <s xml:id="echoid-s715" xml:space="preserve">6 lin. </s>
            <s xml:id="echoid-s716" xml:space="preserve">& </s>
            <s xml:id="echoid-s717" xml:space="preserve">ad minorem attractio præpolle-
              <lb/>
            bat repulſioni, hinc magnes ex Libra ſuspenſus attrahebatur, non
              <lb/>
            repellebatur, & </s>
            <s xml:id="echoid-s718" xml:space="preserve">in Experimento XV. </s>
            <s xml:id="echoid-s719" xml:space="preserve">ad diſtantiam 5 linearum
              <lb/>
            proportio repulſionis erat minor quam attractionis, unde quoque re-
              <lb/>
            pulſio imminui videbatur in minoribus diſtantiis, quæ tamen procul
              <lb/>
            dubio augebatur, quo Magnetes propius ſibi admovebantur, ſed
              <lb/>
            ab attractione tantopere turbabatur, ut inde oborta fuerit ſumma ir-
              <lb/>
            regularitas, quæ in ipſis obſervabatur Experimentis, cum ad diſtan-
              <lb/>
            tias 10, 11, & </s>
            <s xml:id="echoid-s720" xml:space="preserve">4 linearum æqualis repulſio obtinuerit, & </s>
            <s xml:id="echoid-s721" xml:space="preserve">maxima
              <lb/>
            in diſtantia 7 linearum fuerit: </s>
            <s xml:id="echoid-s722" xml:space="preserve">confirmabar in hac ſententia, poſt-
              <lb/>
            quam attractiones in Experimento III. </s>
            <s xml:id="echoid-s723" xml:space="preserve">inter hos Magnetes regnan-
              <lb/>
            tes, & </s>
            <s xml:id="echoid-s724" xml:space="preserve">notatas, addideram repulſionibus, tum enim quædam regu-
              <lb/>
            laritas dabatur, maximaque repulſio foret in contactu immediato,
              <lb/>
            minor in aliquo Magnetum intervallo, & </s>
            <s xml:id="echoid-s725" xml:space="preserve">ſemper decreſcens aucto inter-
              <lb/>
            vallo, quemadmodum patebit in hac Tabula, exhibente attractiones no-
              <lb/>
            tatas in Experimento tertio, & </s>
            <s xml:id="echoid-s726" xml:space="preserve">Repulſiones in Experimento XIV, ſi-
              <lb/>
            mul cum Summa ex attractione addita repulſioni, quam hic volumus.</s>
            <s xml:id="echoid-s727" xml:space="preserve"/>
          </p>
          <note position="right" xml:space="preserve">
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          Attract. \\ poll. # Lin. # gran.
            <lb/>
          12 # 0 # {1/20}
            <lb/>
          11 # 0 # {1/8}
            <lb/>
          # 12 # 70 {1/2}
            <lb/>
          # 10 # 87
            <lb/>
          # 7 # 114
            <lb/>
          </note>
          <note position="right" xml:space="preserve">
            <lb/>
          Repulſ. \\ poll. # Lin. # gran. # Summ. tota \\ repulſion.
            <lb/>
          11 # 11 # {1/2} # {3/40}
            <lb/>
          10 # 9 # {3/4} # {7/8}
            <lb/>
          # 12 # 24 # 94 {1/2}
            <lb/>
          # 10 # 24 # 111
            <lb/>
          # 7 # 25 # 139
            <lb/>
          </note>
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