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

Table of contents

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[91.] EXPERIMENTUM LXXI.
Page: 137 (123)
[92.] EXPERIMENTUM LXXII.
Page: 137 (123)
[93.] EXPERIMENTUM LXXIII.
Page: 141 (127)
[94.] DE METHODO ARMANDI MAGNETES.
Page: 144 (130)
[95.] EXPERIMENTUM LXXIV.
Page: 146 (132)
[96.] EXPERIMENTUM. LXXV.
Page: 147 (133)
[97.] EXPERIMENTUM LXXVI.
Page: 147 (133)
[98.] EXPERIMENTUM LXXVII.
Page: 148 (134)
[99.] EXPERIMENTUM LXXVIII.
Page: 148 (134)
[100.] EXPERIMENTUM. LXXIX.
Page: 148 (134)
[101.] EXPERIMENTUM LXXX.
Page: 149 (135)
[102.] CAPUT TERTIUM. De Directione Magnetis & Ferri ſuper ipſo ducti.
Page: 150 (136)
[103.] EXPERIMENTUM LXXXI.
Page: 151 (137)
[104.] EXPERIMENTUM LXXXII.
Page: 152 (138)
[105.] EXPERIMENTUM LXXXIII.
Page: 153 (139)
[106.] EXPERIMENTUM LXXXIV.
Page: 154 (140)
[107.] EXPERIMENTUM LXXXV.
Page: 154 (140)
[108.] EXPERIMENTUM LXXXVI.
Page: 155 (141)
[109.] EXPERIMENTUM LXXXVII.
Page: 155 (141)
[110.] EXPERIMENTUM LXXXVIII.
Page: 155 (141)
[111.] EXPERIMENTUM LXXXIX.
Page: 155 (141)
[112.] EXPERIMENTUM XC.
Page: 157 (143)
[113.] EXPERIMENTUM XCI.
Page: 158 (144)
[114.] EXPERIMENTUM XCII.
Page: 159 (145)
[115.] EXPERIMENTUM XCIII.
Page: 160 (146)
[116.] EXPERIMENTUM XCIV.
Page: 162 (148)
[117.] EXPERIMENTUM XCV.
Page: 163 (149)
[118.] EXPERIMENTUM XCVI.
Page: 163 (149)
[119.] EXPERIMENTUM XCVII.
Page: 164 (150)
[120.] Tabula Declinationis Acus Magneticæ Pariſiis obſervatæ.
Page: 166 (152)
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              <pb o="121" file="0135" n="135" rhead="DE MAGNETE."/>
            conſpici poſſunt poſito Magnete ſupra ſpeculum vitreum, infra quod
              <lb/>
            alba jacet charta; </s>
            <s xml:id="echoid-s2935" xml:space="preserve">nulla enim ſuperficies datur lævigatior, ſupra quam
              <lb/>
            ferrea Scobs, vel pulvis Indicus, in ſeries magis ordinatas diſponi
              <lb/>
            poteſt.</s>
            <s xml:id="echoid-s2936" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2937" xml:space="preserve">Quicunque has ſeries circa Magnetem primo intuetur, extemplo
              <lb/>
            judicaret eas a circumfluente circa lapidem Fluido pendere, quod
              <lb/>
            delatum inter Ferri partes, eas tam juſto diſponeret ordine, cum
              <lb/>
            viam ſibi quærit, atque Scobis partes, ut totidem obſtacula, removet:
              <lb/>
            </s>
            <s xml:id="echoid-s2938" xml:space="preserve">attendenti autem nihil minus verum eſſe apparet; </s>
            <s xml:id="echoid-s2939" xml:space="preserve">cum enim Scobs
              <lb/>
            ferrea ſit admodum gravis & </s>
            <s xml:id="echoid-s2940" xml:space="preserve">craſſa, debebit id fluidum, quod eam
              <lb/>
            e loco moveret, ordinaretque, eſſe copioſum, veloci actem motu, & </s>
            <s xml:id="echoid-s2941" xml:space="preserve">
              <lb/>
            magnarum virium; </s>
            <s xml:id="echoid-s2942" xml:space="preserve">id igitur facilius movebit, propellet, disjiciet aut
              <lb/>
            ordinabit Scobem parteſve corporum leviſſimas, uti farinam frumenti,
              <lb/>
            Scobem Ligni, Eboris, Stanni, Cupri; </s>
            <s xml:id="echoid-s2943" xml:space="preserve">quam graviſſimas Ferri: </s>
            <s xml:id="echoid-s2944" xml:space="preserve">verum
              <lb/>
            hæc omnia circa Magnetem ſparſa non in ſeries diſponuntur, non mo-
              <lb/>
            ventur, ſed jacent quieta, uti ceciderunt, ac ſi nullus afforet Magnes, an
              <lb/>
            igitur fingipoteſt fluidum, quod corpora moveret craſſiora & </s>
            <s xml:id="echoid-s2945" xml:space="preserve">gravia, in
              <lb/>
            leviſſima autem operari non poſſet? </s>
            <s xml:id="echoid-s2946" xml:space="preserve">ſed non fluere in intervallis
              <lb/>
            ſerierum dicatur fluidum, verum per ipſam Scobis ſubſtantiam, & </s>
            <s xml:id="echoid-s2947" xml:space="preserve">
              <lb/>
            ea ideo ita ordinari; </s>
            <s xml:id="echoid-s2948" xml:space="preserve">hoc conceſſo, quæram quomodo id fluidum
              <lb/>
            non moveat partes leviſſimas farinæ, quibus occurrit, & </s>
            <s xml:id="echoid-s2949" xml:space="preserve">quas penetrat,
              <lb/>
            cum moveat Ferri partes graviſſimas? </s>
            <s xml:id="echoid-s2950" xml:space="preserve">& </s>
            <s xml:id="echoid-s2951" xml:space="preserve">2°. </s>
            <s xml:id="echoid-s2952" xml:space="preserve">quomodo Scobs ferrea
              <lb/>
            in ſeries intervalla relinquentes ordinetur, & </s>
            <s xml:id="echoid-s2953" xml:space="preserve">non partes juxta ſe
              <lb/>
            poſitas tantum habeat? </s>
            <s xml:id="echoid-s2954" xml:space="preserve">Quas difficultates nemo ſolvet facile, prius-
              <lb/>
            quam indolem virium Magneticarum melius intellexerimus.</s>
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          </p>
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          <head xml:id="echoid-head95" xml:space="preserve">EXPERIMENTUM LXVII.</head>
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            <s xml:id="echoid-s2956" xml:space="preserve">Sternebatur limatura Ferri ſupra parallelopipedum ferreum 6
              <lb/>
            pollices craſſum, cujus inferiori extremo applicatus fuit Magnes,
              <lb/>
            illico Limatura recta ſurſum erigebatur: </s>
            <s xml:id="echoid-s2957" xml:space="preserve">indicio vim Magnetis tranſire
              <lb/>
            quoque per Ferrum, etiamſi craſſiſſimum.</s>
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            <s xml:id="echoid-s2959" xml:space="preserve">Deinde ſupra aliud parallelopipedum ferreum, unum pollicem craſ-
              <lb/>
            ſum, limatura Ferri ſatis denſe ſpargebatur, huic iterum præcedens
              <lb/>
            parallelopipedum 6 pollicum impoſitum, ejuſque parti ſuperiori in-
              <lb/>
            jecta quoque fuit Ferri Limatura, tum Magnes infimo </s>
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