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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            quam Magnes Hoc autem multo magis probat Experimentum XVII,
              <lb/>
            nam idem Magnes in puncto contactus cum ferro minoris formæ,
              <lb/>
            quam in Experimento XVI, habuit vim attrahendi = 720. </s>
            <s xml:id="echoid-s941" xml:space="preserve">granis,
              <lb/>
            quæ vis plus quam quinquies ſuperat 180. </s>
            <s xml:id="echoid-s942" xml:space="preserve">grana in Experimento
              <lb/>
            quarto: </s>
            <s xml:id="echoid-s943" xml:space="preserve">Imo hoc ulterius confirmat Experimentum V. </s>
            <s xml:id="echoid-s944" xml:space="preserve">nam in hoc
              <lb/>
            Magnes NO. </s>
            <s xml:id="echoid-s945" xml:space="preserve">rotundus attrahebat alium vi 340. </s>
            <s xml:id="echoid-s946" xml:space="preserve">granor. </s>
            <s xml:id="echoid-s947" xml:space="preserve">in puncto
              <lb/>
            contactus, ſed in Experimento XVIII, idem Magnes rotundus at-
              <lb/>
            traxit ferrum vi = 1312. </s>
            <s xml:id="echoid-s948" xml:space="preserve">granis. </s>
            <s xml:id="echoid-s949" xml:space="preserve">vel inExperimento XIX. </s>
            <s xml:id="echoid-s950" xml:space="preserve">attraxit fer-
              <lb/>
            rum vi = 1024. </s>
            <s xml:id="echoid-s951" xml:space="preserve">gran. </s>
            <s xml:id="echoid-s952" xml:space="preserve">& </s>
            <s xml:id="echoid-s953" xml:space="preserve">in Experimento XX. </s>
            <s xml:id="echoid-s954" xml:space="preserve">attraxit ferrum vi =
              <lb/>
            574 gran. </s>
            <s xml:id="echoid-s955" xml:space="preserve">Ex pluribus igitur Experimentis conſtat manifeſto, Magne-
              <lb/>
            tem fortius attrahere ferrum, quam alterum Magnetem. </s>
            <s xml:id="echoid-s956" xml:space="preserve">Ex hac ob-
              <lb/>
            ſervatione confirmor in ſententia, quam in Cap 1. </s>
            <s xml:id="echoid-s957" xml:space="preserve">attuli, Magnetes,
              <lb/>
            qui polis amicis ſe attrahunt, ſimul ſe repellere, ſed repulſionem
              <lb/>
            ſuperari ab attractione; </s>
            <s xml:id="echoid-s958" xml:space="preserve">quemadmodum Magnetes, quo tempore
              <lb/>
            polis ſe fugantibus ſibi obverſi recedunt, ſimul tamen attrahuntur,
              <lb/>
            ſed attractio a repulſione ſuperatur: </s>
            <s xml:id="echoid-s959" xml:space="preserve">Quomodo enim ferrum modo
              <lb/>
            ante ex Igne extractum, & </s>
            <s xml:id="echoid-s960" xml:space="preserve">nulla ferè vi, ſaltem perquam exigua
              <lb/>
            imprægnatum, poſſet fortius attrahi â Magnete, quam Magnes exi-
              <lb/>
            miâ donatus vi attrahente? </s>
            <s xml:id="echoid-s961" xml:space="preserve">niſi quod Ferrum attrahatur tantum,
              <lb/>
            nequaquam ſimul repellat: </s>
            <s xml:id="echoid-s962" xml:space="preserve">aut ſi repellat, parum agat.</s>
            <s xml:id="echoid-s963" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s964" xml:space="preserve">Corol. </s>
            <s xml:id="echoid-s965" xml:space="preserve">2. </s>
            <s xml:id="echoid-s966" xml:space="preserve">Datur in his attractionibus ferri ad Magnetem, maxi-
              <lb/>
            mum aliquod & </s>
            <s xml:id="echoid-s967" xml:space="preserve">minimum: </s>
            <s xml:id="echoid-s968" xml:space="preserve">Ferri enim maſſa determinatæ magni-
              <lb/>
            tudinis & </s>
            <s xml:id="echoid-s969" xml:space="preserve">formæ maxime attrahetur â Magnete magnitudinis de-
              <lb/>
            terminatæ Ferri maſſa alia major vel minor, minus attrahetur ab eo-
              <lb/>
            dem, & </s>
            <s xml:id="echoid-s970" xml:space="preserve">quo maſſæ, tam quoad exceſſum vel defectum, plus diffe-
              <lb/>
            runt â maſſâ, quæ maxime attrahitur, eo etiam minus attrahentur.
              <lb/>
            </s>
            <s xml:id="echoid-s971" xml:space="preserve">Hoc probo ex Experimentis XVII, XVIII, XIX, XX, in qui-
              <lb/>
            bus idem Magnes rotundus NO Tab 1. </s>
            <s xml:id="echoid-s972" xml:space="preserve">fig. </s>
            <s xml:id="echoid-s973" xml:space="preserve">2 fuit in uſum vocatus: </s>
            <s xml:id="echoid-s974" xml:space="preserve">
              <lb/>
            Nam in Experimento XVIII ferri maſſa quædam mediæ magnitudinis,
              <lb/>
            attrahebatur in puncto contactus vi = 1312. </s>
            <s xml:id="echoid-s975" xml:space="preserve">granis. </s>
            <s xml:id="echoid-s976" xml:space="preserve">Verum paralle-
              <lb/>
            lopipedum ferreum multo gravius, in Experimento XVII, attrahebatur
              <lb/>
            tantum vi = 720. </s>
            <s xml:id="echoid-s977" xml:space="preserve">gran adeoque minus quam ferrum Experimenti
              <lb/>
            XVIII. </s>
            <s xml:id="echoid-s978" xml:space="preserve">ſed ferri moles minor in Experimento XIX. </s>
            <s xml:id="echoid-s979" xml:space="preserve">attrahebatur vi =
              <lb/>
            1024. </s>
            <s xml:id="echoid-s980" xml:space="preserve">gran. </s>
            <s xml:id="echoid-s981" xml:space="preserve">ergo minus quam moles in Experimento XVIII. </s>
            <s xml:id="echoid-s982" xml:space="preserve">qua par-
              <lb/>
            te autem in contactu attrahebatur hoc ferrum in Experimento XIX,
              <lb/>
            erat craſſius, quam ferrum in Experimento XX. </s>
            <s xml:id="echoid-s983" xml:space="preserve">quod hinc modo in </s>
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