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-s638" xml:space="preserve">
              <pb o="26" file="0040" n="40" rhead="DISSERTATIO"/>
            que Magnetem rotundum majorem ON, quo uſus fueram in Expe-
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            rimentis I, II, V. </s>
            <s xml:id="echoid-s639" xml:space="preserve">impoſui tabulæ immobilem, aliumque Magnetem,
              <lb/>
            quam quo hactenus uſus fueram, ſuspendi ex bilance, die 17 Februarii
              <lb/>
            Anni 1726. </s>
            <s xml:id="echoid-s640" xml:space="preserve">& </s>
            <s xml:id="echoid-s641" xml:space="preserve">polos ambos utriusque Magnetis ſe attrahentes, ſibi
              <lb/>
            obverti, ut notare attractionum æqualitatem vel inæqualitatem pos-
              <lb/>
            ſem, ecce igitur Experimenta in utroque caſu adnotata, quæ juxta
              <lb/>
            ſe poſui, ut melius uno oculi ictu conſpiceretur in eadem diſtantia
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            virium diverſitas.</s>
            <s xml:id="echoid-s642" xml:space="preserve"/>
          </p>
          <note position="right" xml:space="preserve">
            <lb/>
          # Exp. VII.
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          Poli duo amici \\ ad diſtantiam
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          Linear. # grana trahunt.
            <lb/>
          12 # 57
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          11 # 63
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          8 # 79
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          6 # 90
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          4 # 113
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          3 # 124
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          2 # 148
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          1 # 168
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          0 # 228
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          </note>
          <note position="right" xml:space="preserve">
            <lb/>
          # Exp. VIII.
            <lb/>
          Poli duo amici alteri \\ ad diſtantiam
            <lb/>
          Linear. # grana trahunt.
            <lb/>
          12 # 72
            <lb/>
          11 # 78
            <lb/>
          10 # 87
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          9 # 94
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          8 # 106
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          7 # 114
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          6 # 131
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          5 # 146
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          4 # 172
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          3 # 190
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          2 # 215
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          1 # 205
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          0 # 340
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          </note>
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          <head xml:id="echoid-head25" xml:space="preserve">EXPERIMENTUM IX, X, XI, XII.</head>
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            <s xml:id="echoid-s643" xml:space="preserve">Non acquieſcebam hifce Experimentis cum Magnetibus factis in
              <lb/>
            iis conditionibus, ut ambo poli eſſent directe ſibi obverſi in eadem
              <lb/>
            linea, itaque volui etiam videre quales quantæque forent attractio-
              <lb/>
            nes, quando Magnetes ſibi alio opponerentur modo, poſitis axibus
              <lb/>
            ſibi parallelis, vel ad rectos angulos: </s>
            <s xml:id="echoid-s644" xml:space="preserve">non quidem inde ſperabam me
              <lb/>
            multa detecturum, vel plurimum lucis in doctrina Magnetica fœ-
              <lb/>
            neraturum; </s>
            <s xml:id="echoid-s645" xml:space="preserve">ſed quia in Phyſicis aliquando caſu plus detegimus, quam
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            prævidemus; </s>
            <s xml:id="echoid-s646" xml:space="preserve">tum ne quædam omitterem ſpectantia hanc examinandi
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            methodum, denuo ſequentibus me accinxi tentaminibus: </s>
            <s xml:id="echoid-s647" xml:space="preserve"/>
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