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-s2744" xml:space="preserve">
              <pb o="112" file="0126" n="126" rhead="DISSERTATIO"/>
            nomena, & </s>
            <s xml:id="echoid-s2745" xml:space="preserve">pauciſſima quæ ab animo intelligi poſſunt noſtro, hæc
              <lb/>
            ab Exp. </s>
            <s xml:id="echoid-s2746" xml:space="preserve">XLVII. </s>
            <s xml:id="echoid-s2747" xml:space="preserve">ad L, ſunt quidem inter ea, quæ omnium minime
              <lb/>
            comprehenduntur.</s>
            <s xml:id="echoid-s2748" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div71" type="section" level="1" n="71">
          <head xml:id="echoid-head79" xml:space="preserve">EXPERIMENTUM LI.</head>
          <p>
            <s xml:id="echoid-s2749" xml:space="preserve">Si aliquot Acus vulgares, vel laminæ parvæ ferreæ ponantur in
              <lb/>
            ſerie quadam juxta ſe invicem, Magnete attingente unam Acum vel
              <lb/>
            laminam, cohærebunt omnes inter ſe & </s>
            <s xml:id="echoid-s2750" xml:space="preserve">cum Magnete, cohærebit
              <lb/>
            tamen fortius ſecunda cum prima, quam tertia cum ſecunda, vel
              <lb/>
            quarta cum tertia, erit enim eo minor cohærentia, quo Acus vel
              <lb/>
            virgæ magis â Magnete diſtiterint: </s>
            <s xml:id="echoid-s2751" xml:space="preserve">tranſit igitur vis Magnetis ex Fer-
              <lb/>
            ro in Ferrum; </s>
            <s xml:id="echoid-s2752" xml:space="preserve">aut ſuſcitata vi Magnetica in hoc Ferro, ſuſcitatur quo-
              <lb/>
            que in vicino, & </s>
            <s xml:id="echoid-s2753" xml:space="preserve">ſic porro uſque ad ultimum: </s>
            <s xml:id="echoid-s2754" xml:space="preserve">Effectus hiſce ana-
              <lb/>
            logi conſpiciuntur in duobus turbinibus ferreis, quorum hic attin-
              <lb/>
            git Magnetem, alter ex priori ſuſpenditur, ambobusſe contingen-
              <lb/>
            tibus in puncto, cohærent tamen attracti vi Magnetica, poteſtque
              <lb/>
            in gyrum velocem & </s>
            <s xml:id="echoid-s2755" xml:space="preserve">oppoſitæ directionis uterque moveri, gyratio
              <lb/>
            enim attractionem non tollit.</s>
            <s xml:id="echoid-s2756" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div72" type="section" level="1" n="72">
          <head xml:id="echoid-head80" xml:space="preserve">EXPERIMENTUM LII.</head>
          <p>
            <s xml:id="echoid-s2757" xml:space="preserve">Si lamina ferrea Magneti affricetur ſecundum longitudinem ſuam,
              <lb/>
            pars, quæ ultimo Magnetem tetigit, plus virium habet, quam quæ
              <lb/>
            primo applicabatur Lapidi, ut igitur extremitas Ferri imbecillior
              <lb/>
            eaſdem vires ac altera recipiat, affricanda eſt polo oppoſito Ma-
              <lb/>
            gnetis.</s>
            <s xml:id="echoid-s2758" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div73" type="section" level="1" n="73">
          <head xml:id="echoid-head81" xml:space="preserve">EXPERIMENTUM. LIII.</head>
          <p>
            <s xml:id="echoid-s2759" xml:space="preserve">Regula Chalybea temperata ſecetur in aliquot partesrectangulas,
              <lb/>
            quæ omnes ſuper lamina poſitæ cuprea diverſo ſitu juxta ſe invicem
              <lb/>
            quam antea cohæſerant, bene apprimantur, ut quaſi corpus unitum
              <lb/>
            forment: </s>
            <s xml:id="echoid-s2760" xml:space="preserve">Supra hunc apparatum tranſeat Magnes fortiter appreſſus,
              <lb/>
            tum regula viribus imprægnabitur, eo majoribus, quo partes ſe ar-
              <lb/>
            ctius contigerint, ſi autem vix ſe contigerint, non niſi paucæ cum
              <lb/>
            iis communicatæ erunt vires,</s>
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