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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        <div xml:id="echoid-div132" type="section" level="1" n="132">
          <p>
            <s xml:id="echoid-s5376" xml:space="preserve">
              <pb o="229" file="0243" n="243" rhead="de MAGNETE."/>
            1232100 ad 1117. </s>
            <s xml:id="echoid-s5377" xml:space="preserve">hoc eſt uti 1103 ad 1. </s>
            <s xml:id="echoid-s5378" xml:space="preserve">Vis gravitatis autem re-
              <lb/>
            ſpectu virtutis directricis inventa ſuperius fuit Exp. </s>
            <s xml:id="echoid-s5379" xml:space="preserve">CII. </s>
            <s xml:id="echoid-s5380" xml:space="preserve">uti 295
              <lb/>
            ad 1. </s>
            <s xml:id="echoid-s5381" xml:space="preserve">nunc vero majorem rationem habet ad vim Magneticam, quod
              <lb/>
            oritur, quia Acus Inclinatoria â tota vi directrice agi poteſt, & </s>
            <s xml:id="echoid-s5382" xml:space="preserve">
              <lb/>
            verſus Magnetis polum, cum Acus horizontalis modo â parte vir-
              <lb/>
            tutis Magneticæ dirigi poſſit, nempe ab ea, quæ in latera Verſorii
              <lb/>
            horizonti perpendicularia agit, Acus vero Inclinatoria agatur a vi
              <lb/>
            deprimente, ſive â tota vi Magnetica.</s>
            <s xml:id="echoid-s5383" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div133" type="section" level="1" n="133">
          <head xml:id="echoid-head142" xml:space="preserve">EXPERIMENTUM CVIII.</head>
          <p>
            <s xml:id="echoid-s5384" xml:space="preserve">Eadem Magnetis pars, quæ Verſorio communicat directionem
              <lb/>
            verſus Auſtrum, diviſo Magnete communicat Verſorio directionem
              <lb/>
            verſus Septentrionem.</s>
            <s xml:id="echoid-s5385" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5386" xml:space="preserve">Hoc, quod prima fronte paradoxon videretur apprime a Doctif-
              <lb/>
            ſimo Dechales fuit intellectum & </s>
            <s xml:id="echoid-s5387" xml:space="preserve">ſolutum. </s>
            <s xml:id="echoid-s5388" xml:space="preserve">Sit enim in Tab. </s>
            <s xml:id="echoid-s5389" xml:space="preserve">7 fig.
              <lb/>
            </s>
            <s xml:id="echoid-s5390" xml:space="preserve">6. </s>
            <s xml:id="echoid-s5391" xml:space="preserve">Magnes rotundus ABEF, cujus hemiſphærium Boreale ſit
              <lb/>
            CXEFZD, in quo punctum, I diſſitum ab Æquatore, ſed parum: </s>
            <s xml:id="echoid-s5392" xml:space="preserve">
              <lb/>
            puncto I applicetur cuſpis Verſorii, quod ſuper eo ducatur, diri-
              <lb/>
            getur cuſpis verſus Septentrionem; </s>
            <s xml:id="echoid-s5393" xml:space="preserve">dividatur tum Magnes ſectione
              <lb/>
            tranſeunte per Æquatorem C D, tum E F manebit polus Borealis,
              <lb/>
            ſed C D evadit Auſtralis, eritque hujus ſegmenti Æquator in X Z,
              <lb/>
            adeoque punctum I evadit pars ſegmenti Auſtralis, huic nunc ite-
              <lb/>
            rum apponatur cuſpis Verſorii, & </s>
            <s xml:id="echoid-s5394" xml:space="preserve">affricetur, dirigetur verſus Au-
              <lb/>
            ſtrum, priori contraria directione.</s>
            <s xml:id="echoid-s5395" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div134" type="section" level="1" n="134">
          <head xml:id="echoid-head143" xml:space="preserve">EXPERIMENTUM CIX.
            <lb/>
          DE FABRICA VERSORIORUM.</head>
          <p>
            <s xml:id="echoid-s5396" xml:space="preserve">Quoniam ab aliquot retro temporibus nonnulli Eruditi haud exi-
              <lb/>
            guam collocarunt operam, ut ſimplicem commodamque invenirent
              <lb/>
            & </s>
            <s xml:id="echoid-s5397" xml:space="preserve">conſtruerent machinam, cujus auxilio Declinatio Verſoriorum
              <lb/>
            accurate detegeretur, operæ pretium eſſe judicavimus hic adjungere
              <lb/>
            obſervationes, quas inter conſtruendam ejuſmodi machinam, </s>
          </p>
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