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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          <p>
            <s xml:id="echoid-s983" xml:space="preserve">
              <pb o="45" file="0059" n="59" rhead="DE MAGNETE."/>
            tactu attrahebatur vi = 574 granis. </s>
            <s xml:id="echoid-s984" xml:space="preserve">Ut hanc ſequelam magis confir-
              <lb/>
            mare poſſem, ſuſpendi ex bilance ferrum adhuc multo minus, nempe
              <lb/>
            pedem chaly beum pyramidalem circini vulgaris, cujus cuſpis acuta in
              <lb/>
            immediato contactu ad Magnetis ejuſdem rotundi polum attrahebatur
              <lb/>
            vi = 20. </s>
            <s xml:id="echoid-s985" xml:space="preserve">granis. </s>
            <s xml:id="echoid-s986" xml:space="preserve">tum con vertebam hunc pedem chalybeum, ut parte
              <lb/>
            obtuſiori eundem Magnetis polum contingeret, nuncattrahebatur viri-
              <lb/>
            bus 224 granorum, adcoque multo minus quam ullum ferrum in Expe-
              <lb/>
            rimentis XVII, XVIII, XIX. </s>
            <s xml:id="echoid-s987" xml:space="preserve">XX. </s>
            <s xml:id="echoid-s988" xml:space="preserve">Sed hanc ſequelam ulterius confir-
              <lb/>
            mant Experimenta duo cum limatura ferri inſtituta, uti Experimenta.
              <lb/>
            </s>
            <s xml:id="echoid-s989" xml:space="preserve">XXI & </s>
            <s xml:id="echoid-s990" xml:space="preserve">XXII. </s>
            <s xml:id="echoid-s991" xml:space="preserve">nam limaturæ quantitas major attrahebatur in contactu
              <lb/>
            vi 650. </s>
            <s xml:id="echoid-s992" xml:space="preserve">granor. </s>
            <s xml:id="echoid-s993" xml:space="preserve">& </s>
            <s xml:id="echoid-s994" xml:space="preserve">quantitas minor vi 710. </s>
            <s xml:id="echoid-s995" xml:space="preserve">granor. </s>
            <s xml:id="echoid-s996" xml:space="preserve">verum quantitas li-
              <lb/>
            maturæ relicta in eadem capſula multo minor, attrahebatur 315. </s>
            <s xml:id="echoid-s997" xml:space="preserve">gra-
              <lb/>
            nis, adcoque manifeſtum eſt, dari determinatam magnitudinem ferri,
              <lb/>
            in quam Magnes fortiſſime agit, & </s>
            <s xml:id="echoid-s998" xml:space="preserve">ipſum in majorem vel minorem
              <lb/>
            ferri molem minoribus viribus tantum operari.</s>
            <s xml:id="echoid-s999" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1000" xml:space="preserve">Ex hiſce Experimentis opinor poſſe elici methodum optimam ar-
              <lb/>
            mandi Magnetem, ut ferri maximum elevet onus, ſi ponderando
              <lb/>
            inquireremus, in quam craſſam ferri molem viribus ageret ſummis;
              <lb/>
            </s>
            <s xml:id="echoid-s1001" xml:space="preserve">ſique tum armatura fabrefieret ex inventa craſſitie. </s>
            <s xml:id="echoid-s1002" xml:space="preserve">Ex hoc Co-
              <lb/>
            rollario etiam fluit Magnetem non attrahere Ferrum vi Legis gene-
              <lb/>
            ralis Attractionis, qua omnia corpora ſeſe trahunt; </s>
            <s xml:id="echoid-s1003" xml:space="preserve">nam ponamus
              <lb/>
            particulis ferri æqualibus innatam eſſe eandem vim attrahendi Ma-
              <lb/>
            gnetem, tum erit magnitudo attractionis in maſſa ferrea, uti eſt
              <lb/>
            magnitudo maſſæ, & </s>
            <s xml:id="echoid-s1004" xml:space="preserve">idcirco maſſa major â Magnete fortius de-
              <lb/>
            beret attrahi, quam minor; </s>
            <s xml:id="echoid-s1005" xml:space="preserve">verum longe quid aliud experientia e-
              <lb/>
            vincit, & </s>
            <s xml:id="echoid-s1006" xml:space="preserve">maſſa major debilius attrahitur minori, quamobrem Ma-
              <lb/>
            gnetis actio ab alia cauſa, quam â Lege Univerſali attractionis pen-
              <lb/>
            debit, quod infra prolixius evincere conabor aliis adhuc argumentis.</s>
            <s xml:id="echoid-s1007" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1008" xml:space="preserve">Corol. </s>
            <s xml:id="echoid-s1009" xml:space="preserve">3. </s>
            <s xml:id="echoid-s1010" xml:space="preserve">Non tamen ad eandem a ſe mutuo diſtantiam agit
              <lb/>
            Magnes in ferrum quam quidem agunt duo Magnetes in ſe invicem.
              <lb/>
            </s>
            <s xml:id="echoid-s1011" xml:space="preserve">Intueamur enim Experimentum 1 in quo Magnes rotundus major ope-
              <lb/>
            rabatur in minorem ad diſtantiam 5. </s>
            <s xml:id="echoid-s1012" xml:space="preserve">poll. </s>
            <s xml:id="echoid-s1013" xml:space="preserve">10. </s>
            <s xml:id="echoid-s1014" xml:space="preserve">linear. </s>
            <s xml:id="echoid-s1015" xml:space="preserve">in Experimen-
              <lb/>
            to II. </s>
            <s xml:id="echoid-s1016" xml:space="preserve">ad diſtantiam 9. </s>
            <s xml:id="echoid-s1017" xml:space="preserve">pollic. </s>
            <s xml:id="echoid-s1018" xml:space="preserve">in Experimento III. </s>
            <s xml:id="echoid-s1019" xml:space="preserve">ad diſtantiam 12. </s>
            <s xml:id="echoid-s1020" xml:space="preserve">
              <lb/>
            pollic in Experimento V. </s>
            <s xml:id="echoid-s1021" xml:space="preserve">ad diſtantiam 18 pollic. </s>
            <s xml:id="echoid-s1022" xml:space="preserve">ſed in Experimen-
              <lb/>
            to XVIII. </s>
            <s xml:id="echoid-s1023" xml:space="preserve">idem Magnes modo agebat in ferrum ad diſtantiam 3. </s>
            <s xml:id="echoid-s1024" xml:space="preserve">
              <lb/>
            pollic 10. </s>
            <s xml:id="echoid-s1025" xml:space="preserve">linear. </s>
            <s xml:id="echoid-s1026" xml:space="preserve">uti & </s>
            <s xml:id="echoid-s1027" xml:space="preserve">in Experimento XIX. </s>
            <s xml:id="echoid-s1028" xml:space="preserve">& </s>
            <s xml:id="echoid-s1029" xml:space="preserve">XX. </s>
            <s xml:id="echoid-s1030" xml:space="preserve">ad 4. </s>
            <s xml:id="echoid-s1031" xml:space="preserve"/>
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