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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[Item 1.]
[2.] PETRI VAN MUSSCHENBROEK A. L. M. Med. & Phil. D. Phil. & Matheſ. Profeſſ. in Acad. Ultraj. PHYSICÆ EXPERIMENTALES, ET GEOMETRICÆ, DE MAGNETE, TUBORUM CAPILLARIUM VITREORUM-QUE SPECULORUM ATTRACTIONE, MAGNITUDINE TERRÆ, COHÆRENTIA CORPORUM FIRMORUM DISSERTATIONES: UTET EPHEMERIDES METEOROLOGICÆ ULTRAJECTINÆ.
[3.] LUGDUNI BATAVORUM, Apud SAMUELEM LUCHTMANS, MDCCXXIX.
[4.] NOBILISSIMIS ET AMPLISSIMIS VIRIS LUCÆ VAN VOORST, JCTO. ET HENRICO VAN SOESTDYK, INCLYTÆ URBIS TRAJECTINÆ CONSULIBUS, HAS DISSERTATIONES EA QUA PAR EST OBSERVANTIA D. D. D. PETRUS VAN MUSSCHENBROEK.
[5.] LECTORI SALUTEM.
[6.] ERRATA TYPOGRAPHICA.
[7.] Berigt voor den Boekbinder.
[8.] DISSERTATIO PHYSICA EXPERIMENTALIS DE MAGNETE. PRÆFATIO.
[9.] Ex Ferro meruit vitam, ferrique rigore Veſcitur, has dulces epulas, hæc pabula novit.
[10.] DISSERTATIO PHYSICA EXPERIMENTALIS DE MAGNETE. CAPUT I. DE ACTIONE MAGNETUM IN SE MUTUO.
[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.
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            <s xml:id="echoid-s2829" xml:space="preserve">
              <pb o="116" file="0130" n="130" rhead="DISSERTATIO"/>
            Magnetis & </s>
            <s xml:id="echoid-s2830" xml:space="preserve">Verſorii intercedit, quam ut accurate obſervaripoſſit,
              <lb/>
            operam impendi, ut detegerem proportionem inter tempora, quibus
              <lb/>
            motus dabatur, & </s>
            <s xml:id="echoid-s2831" xml:space="preserve">diſtantias horum corporum a ſe invicem, ut per-
              <lb/>
            nicitatem virium Magneticarum invenirem, ſed nimia celeritas pro-
              <lb/>
            hibuit hucuſque, quo minus aliquid accurati determinem: </s>
            <s xml:id="echoid-s2832" xml:space="preserve">pulcrius
              <lb/>
            tamen hoc rude tentamen mihi viſum fuit, quam ut ſilentio preme-
              <lb/>
            retur.</s>
            <s xml:id="echoid-s2833" xml:space="preserve"/>
          </p>
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        <div xml:id="echoid-div79" type="section" level="1" n="79">
          <head xml:id="echoid-head87" xml:space="preserve">EXPERIMENTUM LIX.</head>
          <p>
            <s xml:id="echoid-s2834" xml:space="preserve">Si Verſorium & </s>
            <s xml:id="echoid-s2835" xml:space="preserve">Magnes in eâ ponantur diſtantia, ut in ſe agant,
              <lb/>
            Verſorium a polo Magnetis attrahitur, cuſpide alterius nominis
              <lb/>
            verſus polum directa; </s>
            <s xml:id="echoid-s2836" xml:space="preserve">tum juxta priorem ponatur alius Magnes, in
              <lb/>
            codem plano horizontali, & </s>
            <s xml:id="echoid-s2837" xml:space="preserve">in eâdem â Verſorio diſtantiâ, polis
              <lb/>
            cognominibus eandem plagam ſpectantibus, dirigetur Acus verſus me-
              <lb/>
            dium interſtitii inter ambos relicti Magnetes, in quo loco eſt cen-
              <lb/>
            trum virium Magnetum, haud aliter fere ac centrum gravitatis in-
              <lb/>
            ter duo ſejuncta corpora intermedium jacet. </s>
            <s xml:id="echoid-s2838" xml:space="preserve">Si autem Magnetis,
              <lb/>
            juxta priorem poſiti, polus ſit alterius nominis, Verſorium dirigi-
              <lb/>
            tur, ut ſit perpendiculare ad amborum Magnetum axes, tum enim
              <lb/>
            cuſpis illius æque attrahitur ab uno, quam repellitur ab altero ſe-
              <lb/>
            cundi Magnetis polo.</s>
            <s xml:id="echoid-s2839" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div80" type="section" level="1" n="80">
          <head xml:id="echoid-head88" xml:space="preserve">EXPERIMENTUM LX.</head>
          <p>
            <s xml:id="echoid-s2840" xml:space="preserve">Tab. </s>
            <s xml:id="echoid-s2841" xml:space="preserve">3. </s>
            <s xml:id="echoid-s2842" xml:space="preserve">fig. </s>
            <s xml:id="echoid-s2843" xml:space="preserve">1. </s>
            <s xml:id="echoid-s2844" xml:space="preserve">Tabulæ A B, quæ ope rotæ P velociſſime cir-
              <lb/>
            cumverti poterat, impoſitus alligatuſque fuit Magnes C, ita ut axis
              <lb/>
            perpendiculariter inſiſteret horizonti, polus autem Boreus ſurſum
              <lb/>
            ſpectaret: </s>
            <s xml:id="echoid-s2845" xml:space="preserve">tum Verſorium Magneticum alteri impoſitum fuit menſæ
              <lb/>
            immobili; </s>
            <s xml:id="echoid-s2846" xml:space="preserve">atque in eodem plano horizontali cum A B, tegebatur
              <lb/>
            campana vitrea, ne a motu aëris per circumgyrationem tabulæ A
              <lb/>
            B, turbaretur, admovebatur Verſorium tam prope Magneti C, ut
              <lb/>
            intra ejus virtutis ſphæram hæreret: </s>
            <s xml:id="echoid-s2847" xml:space="preserve">Verſorio quieſcente, tabula A B
              <lb/>
            velociter circumagebatur, in principio viſa fuit Acus oſeillari nunc
              <lb/>
            dextrorſum, nunc ſiniſtrorſum, primum ſitum relinquendo parum-
              <lb/>
            per: </s>
            <s xml:id="echoid-s2848" xml:space="preserve">ſed aucta velocitate tabulæ A B, quantum fieri potuit, Ver-
              <lb/>
            ſorium manſit fixum in ſuo meridiano, neque ullum motus minimi
              <lb/>
            dedit ſignum.</s>
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