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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[11.] EXPERIMENTUMI
[12.] EXPERIMENTUM II.
[13.] EXPERIMENTUM III.
[14.] EXPERIMENTUM IV.
[15.] EXPERIMENTUM V.
[16.] EXPERIMENTUM VI.
[17.] EXPERIMENTUM VII. & VIII.
[18.] EXPERIMENTUM IX, X, XI, XII.
[19.] EXPERIMENTUM XIII.
[20.] EXPERIMENTUM XIV.
[21.] EXPERIMENTUM XV.
[22.] CAPUT II. DE ACTIONE MAGNETIS IN FERRUM.
[23.] Flagrat anbela ſilex, & amicam ſaucia ſentit Materiam, placidosque chalybs cognoſcit amores.
[24.] EXPERIMENTUM XVI.
[25.] EXPERIMENTUM XVII.
[26.] EXPERIMENTUM XVIII.
[27.] EXPERIMENTUM XIX.
[28.] EXPERIMENTUM XX.
[29.] EXPERIMENTUM XXI.
[30.] EXPERIMENTUM XXII.
[31.] EXPERIMENTUM XXIII.
[32.] EXPERIMENTUM XXIV.
[33.] EXPERIMENTUM XXV.
[34.] EXPERIMENTUM. XXVI.
[35.] EXPERIMENTUM XXVII.
[36.] EXPERIMENTUM. XXVIII.
[37.] EXPERIMENTUM XXIX.
[38.] EXPERIMENTUM XXX.
[39.] PROCESSUS PRIMUS.
[40.] PROCESSUS SECUNDUS.
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          <pb o="28" file="0042" n="42" rhead="DISSERTATIO"/>
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          # Exp. II.
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          Lin. # grana.
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          8 # 29
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          7 # 34
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          6 # 36
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          0 # 135
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            <lb/>
          # Exp. 12.
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          Lin. # grana.
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          8 # 21
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          7 # 24
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          6 # 28
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          5 # 34
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          4 # 39
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          3 # 51
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          <p>
            <s xml:id="echoid-s657" xml:space="preserve">Quantum variat horum 4 laterum attractio? </s>
            <s xml:id="echoid-s658" xml:space="preserve">quod ſi Magnes ſit
              <lb/>
            ſubſtantia homogenea, ſi polorum axis jaceat inter ambas ſuperficies
              <lb/>
            parallelepipedi intermedius, an non 4 laterum attractiones deberent
              <lb/>
            eſſe æquales? </s>
            <s xml:id="echoid-s659" xml:space="preserve">nullam video rationem, quæ non ſtabiliret hoc ratio-
              <lb/>
            cinium, verum Magnes, quo in examine uſus fui, tamen ita vide-
              <lb/>
            batur comparatus; </s>
            <s xml:id="echoid-s660" xml:space="preserve">nam an accuratiſſime ita ſe habuerit, nullo modo
              <lb/>
            me determinare poſſe fateor: </s>
            <s xml:id="echoid-s661" xml:space="preserve">nihilominus obſervationes inter ſe plu-
              <lb/>
            rimum diſcrepant, quæ virium magnitudinem oſtendunt.</s>
            <s xml:id="echoid-s662" xml:space="preserve"/>
          </p>
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          <head xml:id="echoid-head26" xml:space="preserve">EXPERIMENTUM XIII.</head>
          <p>
            <s xml:id="echoid-s663" xml:space="preserve">Magnetes ſeſe mutuo non tantum attrahunt, ſed etiam repellunt,
              <lb/>
            & </s>
            <s xml:id="echoid-s664" xml:space="preserve">æque ambo poli unius Magnetis ambos repellunt alterius polos;
              <lb/>
            </s>
            <s xml:id="echoid-s665" xml:space="preserve">ſunt tamen alii poli, qui ſe repellunt, quam qui ſe attrahunt: </s>
            <s xml:id="echoid-s666" xml:space="preserve">Deſiderio
              <lb/>
            capiebar indagandi quomodo repulſiones Magnetum eſſent comparatæ,
              <lb/>
            an majores, an minores forent, quam attractiones, an etiam in pro-
              <lb/>
            portione quadam diſtantiarum vel in inconſtanti? </s>
            <s xml:id="echoid-s667" xml:space="preserve">ponderando
              <lb/>
            opinabar me abunde voto potiturum juxta methodum in attractioni-
              <lb/>
            bus adhibitam; </s>
            <s xml:id="echoid-s668" xml:space="preserve">ea tamen diſſerentia obſervanda erat, ut cum antea
              <lb/>
            Lanci eſſent imponenda ponduſcula, quæ attractionibus æquipolle-
              <lb/>
            bant, nunc ponduſcula Magneti eſſent imponenda, ut tanto gravior
              <lb/>
            fieret, accederetque ad inferiorem Magnetem, quo plus ab ipſo re-
              <lb/>
            pellebatur, hoc eſt, elevabatur ſurſum.</s>
            <s xml:id="echoid-s669" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s670" xml:space="preserve">Magnetem NO majorem rotundum iterum immobilem poſui in
              <lb/>
            menſa; </s>
            <s xml:id="echoid-s671" xml:space="preserve">aliumque magnetem parallelepipedum (quo uſus </s>
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