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-div317" type="section" level="1" n="317">
          <pb o="409" file="0423" n="423" rhead="DE MAGNITUDINE TERRÆ."/>
          <note position="right" xml:space="preserve">
            <lb/>
          Ex obſervatis angulus I A E # 121 gr. 7`.
            <lb/>
          Angulus A E I # 42 gr. 24`.
            <lb/>
          Unde angulus A I E # 16 gr. 29`.
            <lb/>
          Atque eruitur latus I E ſive diſtantia inter Harlemum \\ & Leidam # 7053, 4, 8.
            <lb/>
          Adeoque differentia inter ambas diſtantias in hoc \\ & in Problemate XXIV inventa admodum parva eſt, \\ tutoque aſſumere licebit diſtantiam inter Harlemum \\ & Leidam eſſe # 7053, 4, 8.
            <lb/>
          Snellius aliam adhuc inſtituens Gæodæſiam, deter- \\ minat eam diſtantiam eſſe # 7049, 2.
            <lb/>
          Atque poſtea adhuc ex alio calculo # 7051, 1.
            <lb/>
          </note>
          <p>
            <s xml:id="echoid-s9356" xml:space="preserve">Quamobrem mediam ponam inter Snellianam & </s>
            <s xml:id="echoid-s9357" xml:space="preserve">inventam in
              <lb/>
            Problemate XXIV. </s>
            <s xml:id="echoid-s9358" xml:space="preserve">quæ eſt hujus Problematis XXV.</s>
            <s xml:id="echoid-s9359" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div318" type="section" level="1" n="318">
          <head xml:id="echoid-head404" xml:space="preserve">
            <emph style="sc">Problema</emph>
          XXVI.</head>
          <head xml:id="echoid-head405" style="it" xml:space="preserve">Tab. XVI. Triangulum O E V, Amſtelodamum, Leida,
            <lb/>
          Vltrajectum.</head>
          <note position="right" xml:space="preserve">
            <lb/>
          Datur per Problema XX diſtantia E V inter Leidam \\ & Ultrajectum # 11589, 8.
            <lb/>
          Et ex obſervatis angulus O E V # 50 gr. 40`.
            <lb/>
          Angulus O V E # 54 gr. 10`.
            <lb/>
          Unde reliquus E O V datur # 75 gr. 10`.
            <lb/>
          Quare diſtantia O E inter Amſtelodamum & Lei- \\ dam erit # 9750, 0, 4.
            <lb/>
          Et O V diſtantia inter Amſtelodamum & Ultraje- \\ ctum. # 9280, 6, 5.
            <lb/>
          </note>
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