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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          <pb o="383" file="0397" n="397" rhead="DE MAGNITUDINE TERRÆ."/>
        </div>
        <div xml:id="echoid-div272" type="section" level="1" n="272">
          <head xml:id="echoid-head311" xml:space="preserve">XIV.
            <emph style="sc">Proelema</emph>
          </head>
          <head xml:id="echoid-head312" style="it" xml:space="preserve">Triangulum E I V, Leida, Harlemum, Trajectum.</head>
          <note position="right" xml:space="preserve">
            <lb/>
          Per Problema VII. datur E V diſtantia inter Lei- \\ dam & Trajectum # 11584. # 0.
            <lb/>
          Ex oblervatis autem angulus V E I # 77 gr. # 50 ſcr.
            <lb/>
          Et angulus V I E # 67 gr. # 51 ſcr.
            <lb/>
          Unde angulus E V I dabitur # 34 gr. # 19 ſcr.
            <lb/>
          Atque inde latus I V diſtantia inter Trajectum & \\ Harlemum # 12226. # 1.
            <lb/>
          Et E I diſtantia inter Leidam & Harlemum # 7051. # 1.
            <lb/>
          </note>
          <p>
            <s xml:id="echoid-s9161" xml:space="preserve">Vides itaque diſtantiam Lcidæ & </s>
            <s xml:id="echoid-s9162" xml:space="preserve">Harlemi in utroque triangulo
              <lb/>
            quam proxime conſentire, quam vis alterum tot ambagibus ſit à no-
              <lb/>
            bis circumductum. </s>
            <s xml:id="echoid-s9163" xml:space="preserve">Nam initio diſtantiam Leidæ & </s>
            <s xml:id="echoid-s9164" xml:space="preserve">Noortwici non
              <lb/>
            eramus ex ipſo fundamento dimenſi, quod tamen poſtmodum ad
              <lb/>
            certiorem operis rationem oblatâ opportunitate hyberno tempore
              <lb/>
            per glaciem commodiſſime abſolvimus, argumenti eſt ſatis omnia
              <lb/>
            obſervandi munia à nobis legitime & </s>
            <s xml:id="echoid-s9165" xml:space="preserve">quam accuratiſſime obita, ut
              <lb/>
            in utram obſervationem inclinandum ſit vix conſtaret niſi in XIII.
              <lb/>
            </s>
            <s xml:id="echoid-s9166" xml:space="preserve">Problemate angulus Harlemenſis exilis eſſet, ſed ſtatio Leidæ & </s>
            <s xml:id="echoid-s9167" xml:space="preserve">
              <lb/>
            Noortwici baſis per ſe prima. </s>
            <s xml:id="echoid-s9168" xml:space="preserve">Contra in Trajecto, Leida, Harle-
              <lb/>
            mo angulus Trajectenſis juſtæ quantitatis, utpote 34 gr. </s>
            <s xml:id="echoid-s9169" xml:space="preserve">19 ſcr. </s>
            <s xml:id="echoid-s9170" xml:space="preserve">di-
              <lb/>
            ſtantia inter Leidam & </s>
            <s xml:id="echoid-s9171" xml:space="preserve">Trajectum derivata quidem, ſed omnibus
              <lb/>
            modis ſatis accurata. </s>
            <s xml:id="echoid-s9172" xml:space="preserve">Itaque quamvis nihil admodum interſit inter
              <lb/>
            utrumque calculum diſſerentiæ maxime circa ſinem hunc verſantibus,
              <lb/>
            iſto tamen noviſſimo potius utemur.</s>
            <s xml:id="echoid-s9173" xml:space="preserve"/>
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