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-div274" type="section" level="1" n="274">
          <pb o="385" file="0399" n="399" rhead="DE MAGNITUDINE TERRÆ."/>
        </div>
        <div xml:id="echoid-div275" type="section" level="1" n="275">
          <head xml:id="echoid-head317" xml:space="preserve">XVII.
            <emph style="sc">Problema.</emph>
          </head>
          <head xml:id="echoid-head318" style="it" xml:space="preserve">Triangulum E O ?. Leida, Amſtelodamum, Alcmaria.</head>
          <note position="right" xml:space="preserve">
            <lb/>
          Per Problema X V. datur E O diſtantia inter Lei- \\ dam & Amſtelodamum # 9687. # 9.
            <lb/>
          Et per Problema XVI. O ? diſtantia inter Amſte- \\ lodamum & Alcmariam # 8137. # 5.
            <lb/>
          Ex obſervatione autem datur in Problemate XVI. an- \\ gulus I O ? # 67 gr. # 36 ſcr.
            <lb/>
          Et per Problema XV angulus E O I # 43 gr. # 18 ſcr.
            <lb/>
          Unde totus E O ? datur # 110 gr. # 54 ſcr.
            <lb/>
          Hinc jam per doctrinam triangulorum datis cru- \\ ribus & angulo ab ipſis comprehenſo datur baſis E ? \\ diſtantia inter Leidam & Alcmariam. # 14707. # 9.
            <lb/>
          Et angulus quoque O ? E # 37 gr # 59 ſcr.
            <lb/>
          Itemque angulus O E ? # 31 gr. # 7 ſcr.
            <lb/>
          </note>
          <p style="it">
            <s xml:id="echoid-s9174" xml:space="preserve">Nota. </s>
            <s xml:id="echoid-s9175" xml:space="preserve">in Problemate XIII Snellium poſuiſſe diſtantiam E O
              <lb/>
            9715, 1. </s>
            <s xml:id="echoid-s9176" xml:space="preserve">in Problemate XV autem 9687, 9. </s>
            <s xml:id="echoid-s9177" xml:space="preserve">quæ eſt differentia
              <lb/>
            27, 2. </s>
            <s xml:id="echoid-s9178" xml:space="preserve">hic præfert men ſuram Probl. </s>
            <s xml:id="echoid-s9179" xml:space="preserve">XV. </s>
            <s xml:id="echoid-s9180" xml:space="preserve">videturqne dubitaſſe de
              <lb/>
            probitate menſuræ Problematis XIII.</s>
            <s xml:id="echoid-s9181" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div276" type="section" level="1" n="276">
          <head xml:id="echoid-head319" xml:space="preserve">XVIII.
            <emph style="sc">Problema.</emph>
          </head>
          <head xml:id="echoid-head320" style="it" xml:space="preserve">Triangulum M V L, Oude-Watera, Trajectum, Bommelia.</head>
          <note position="right" xml:space="preserve">
            <lb/>
          Per Problema VIII. datur V M diſtantia inter \\ Oude Wateram & Trajectum # 4980. # 6.
            <lb/>
          Ex obſervatis autem angulus V M L # 65 gr # 23 ſcr.
            <lb/>
          Et angulus M V L # 82 gr. # 30 ſcr.
            <lb/>
          Atque inde reliquus V L M # 32 gr. # 7 ſcr.
            <lb/>
          Quare per doctrinam triangulorum dabitur L M, \\ diſtantia inter Oude-Wateram & Bommeliam # 9287. # 4.
            <lb/>
          Et V Ldiſtantia inter Trajectum & Bommeliam # 8516. # 5.
            <lb/>
          </note>
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