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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[31.] EXPERIMENTUM XXIII.
Page: 69 (55)
[32.] EXPERIMENTUM XXIV.
Page: 71 (57)
[33.] EXPERIMENTUM XXV.
Page: 74 (60)
[34.] EXPERIMENTUM. XXVI.
Page: 80 (66)
[35.] EXPERIMENTUM XXVII.
Page: 83 (69)
[36.] EXPERIMENTUM. XXVIII.
Page: 83 (69)
[37.] EXPERIMENTUM XXIX.
Page: 85 (71)
[38.] EXPERIMENTUM XXX.
Page: 90 (76)
[39.] PROCESSUS PRIMUS.
Page: 91 (77)
[40.] PROCESSUS SECUNDUS.
Page: 92 (78)
[41.] PROCESSUS TERTIUS.
Page: 93 (79)
[42.] PROCESSUS QUARTUS.
Page: 94 (80)
[43.] PROCESSUS QUINTUS.
Page: 97 (83)
[44.] PROCESSUS SEXTUS.
Page: 99 (85)
[45.] PROCESSUS SEPTIMUS.
Page: 100 (86)
[46.] PROCESSUS OCTAVUS.
Page: 101 (87)
[47.] PROCESSUS NONUS.
Page: 102 (88)
[48.] PROCESSUS DECIMUS.
Page: 103 (89)
[49.] PROCESSUS UNDECIMUS.
Page: 104 (90)
[50.] PROCESSUS DUODECIMUS.
Page: 106 (92)
[51.] EXPERIMENTUM XXXI.
Page: 110 (96)
[52.] EXPERIMENTUM XXXII.
Page: 115 (101)
[53.] EXPERIMENTUM XXXIII.
Page: 115 (101)
[54.] EXPERIMENTUM XXXIV.
Page: 116 (102)
[55.] EXPERIMENTUM. XXXV.
Page: 117 (103)
[56.] EXPERIMENTUM. XXXVI.
Page: 117 (103)
[57.] EXPERIMENTUM XXXVII.
Page: 118 (104)
[58.] EXPERIMENTUM XXXVIII.
Page: 118 (104)
[59.] EXPERIMENTUM XXXIX.
Page: 119 (105)
[60.] EXPERIMENTUM XL.
Page: 120 (106)
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              <pb o="101" file="0115" n="115" rhead="DE MAGNETE."/>
            ſitiei Ferro, id quod eſt longius majoribus viribus imprægnari breviori,
              <lb/>
            attamen modo uſque ad aliquam cum perventum ſit longitudinem, tum
              <lb/>
            maximis donari viribus, a qua ſi receſſerit longitudine majori, aut bre-
              <lb/>
            vitate, minores a Magnete vires aufert: </s>
            <s xml:id="echoid-s2455" xml:space="preserve">Sed maxima virium obſerva-
              <lb/>
            tur differentia inter longitudinem 10 poll. </s>
            <s xml:id="echoid-s2456" xml:space="preserve">& </s>
            <s xml:id="echoid-s2457" xml:space="preserve">4 pollic. </s>
            <s xml:id="echoid-s2458" xml:space="preserve">hæc enim
              <lb/>
            tantum pondus 1 {1/2} grani tulit, altera geſtante 33 grana: </s>
            <s xml:id="echoid-s2459" xml:space="preserve">non quo-
              <lb/>
            que videtur proportio dari inter ferri longitudinem & </s>
            <s xml:id="echoid-s2460" xml:space="preserve">virium quan-
              <lb/>
            titatem.</s>
            <s xml:id="echoid-s2461" xml:space="preserve"/>
          </p>
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        <div xml:id="echoid-div52" type="section" level="1" n="52">
          <head xml:id="echoid-head60" xml:space="preserve">EXPERIMENTUM XXXII.</head>
          <p>
            <s xml:id="echoid-s2462" xml:space="preserve">Lamella Chalybea temperata, 4 pollices longa, {4/10} pollic. </s>
            <s xml:id="echoid-s2463" xml:space="preserve">lata,
              <lb/>
            {1/10} pollic. </s>
            <s xml:id="echoid-s2464" xml:space="preserve">alta, ſuper polo Magnetis ducta ter, lente & </s>
            <s xml:id="echoid-s2465" xml:space="preserve">cum de-
              <lb/>
            terminata appreſſione, ab extremo ſuo geſtavit pondus ferreum 72
              <lb/>
            granorum: </s>
            <s xml:id="echoid-s2466" xml:space="preserve">lamella ferrea mollis, accurate ſimilis & </s>
            <s xml:id="echoid-s2467" xml:space="preserve">æqualis priori
              <lb/>
            ſuper eodem polo Magnetis ter ducta quoque, cum eadem appreſ-
              <lb/>
            ſione, ab extremo ſuo geſtare tantum potuit ferrum 10 granorum;
              <lb/>
            </s>
            <s xml:id="echoid-s2468" xml:space="preserve">repetiti affrictus ad eundem Magnetem non communicaverunt ma-
              <lb/>
            jores ferro vires; </s>
            <s xml:id="echoid-s2469" xml:space="preserve">adeo ut Magnes multo majores vires cum Chaly-
              <lb/>
            be communicet quam cum Ferro, & </s>
            <s xml:id="echoid-s2470" xml:space="preserve">ſecundum hoc Experimentum,
              <lb/>
            quidem ſepties Majores; </s>
            <s xml:id="echoid-s2471" xml:space="preserve">an eadem proportio in aliis corporibus æ-
              <lb/>
            qualibus ex Chalybe & </s>
            <s xml:id="echoid-s2472" xml:space="preserve">Ferro confectis obtineat, non determino. </s>
            <s xml:id="echoid-s2473" xml:space="preserve">
              <lb/>
            Notaverunt plurimi Autores cum Chalybe Magnetem plus virtutis-
              <lb/>
            quam cum ferro communicare, ſed eorum nemo proportionem ac-
              <lb/>
            curate obſervavit; </s>
            <s xml:id="echoid-s2474" xml:space="preserve">multum differentiæ procul dubio dabitur, prout
              <lb/>
            Chalybs eſt purior impuriorve, & </s>
            <s xml:id="echoid-s2475" xml:space="preserve">Ferrum hujus alteriuſve indolis,
              <lb/>
            ex Sueciæ vel Germaniæ fodinis effoſſum.</s>
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          </p>
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          <head xml:id="echoid-head61" xml:space="preserve">EXPERIMENTUM XXXIII.</head>
          <p>
            <s xml:id="echoid-s2477" xml:space="preserve">Magnes fortius trahit Ferrum quam Chalybem, & </s>
            <s xml:id="echoid-s2478" xml:space="preserve">fortius Cha-
              <lb/>
            lybem mollem quam temperatum, fortius temperatum, quam qui
              <lb/>
            ſummopere induratus eſt.</s>
            <s xml:id="echoid-s2479" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2480" xml:space="preserve">Memini hoc olim Hartſoekerum quoque obſervaſſe, adnotantem,
              <lb/>
            ſi Magnes poſſit elevare regulam Chaly beam gravitatis 3 unciarum,
              <lb/>
            ipſum tum ad minimum regulam Ferri molliſſimi unciarum </s>
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