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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          <note position="right" xml:space="preserve">
            <lb/>
          Unde per doctrinam triangulorum invenietur \\ V M diſtantia inter Oude Wateram & Trajectum # 4980. # 6.
            <lb/>
          Et E M diſtantia inter Oude-Wateram & Lei- \\ dam # 7949. # 0.
            <lb/>
          </note>
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        <div xml:id="echoid-div266" type="section" level="1" n="266">
          <head xml:id="echoid-head300" xml:space="preserve">IX.
            <emph style="sc">Problema.</emph>
            <lb/>
          Triangulum E M S. Leida, Oude Watera, Gouda.</head>
          <note position="right" xml:space="preserve">
            <lb/>
          Iterum diſtantiam inter Leidam & Oude-Wateram libet tentare, \\ ad operis veritatem explorandam, idque aſſumpta tertia Gouda. \\ Datur itaque hic per Problema II, E S diſtantia inter Leidam & \\ Goudam # 5897. # 8.
            <lb/>
          Ex obſervatis autem angulus S E M # 17 gr. # 23 ſcr.
            <lb/>
          Et angulus E S M # 125 gr. # 42 ſcr.
            <lb/>
          Et angulus E M S # 36 gr. # 53 ſcr.
            <lb/>
          In qua ſumma duo ſcrupula deſiderantur, quæ ita \\ ſupplebo, ut angulus S E M ſit # 17 gr. # 23 ſcr.
            <lb/>
          Et angulus E S M # 125 gr. # 43 ſcr.
            <lb/>
          Et angulus E M S # 36 gr. # 53 ſcr.
            <lb/>
          Quamobrem inde jam per planorum triangulorum doctrinam da- \\ bitur quoque diſtantia inter Oude-Wateram & Goudam, ſive latus \\ S M # 2921. # 3.
            <lb/>
          Et E M diſtantia inter Leidam & Oude-Wateram # 7962. # 0.
            <lb/>
          Atqui ea fuit Problemate VII. # 7949. # 0.
            <lb/>
          Differentia igitur inter has obſervationes intercedit undecim de- \\ cempedarum & ſemis, quæ paulo eſt major ſimul utriuſque turris \\ craſſitudine duplicata. Et ſi quamvis ſecundum octavi proble- \\ matis abacos potius pronuntiaverim, quod illic minimus angulus \\ ſit # 20 gr. # 26 ſcr.
            <lb/>
          Certe utraque eſt ſatis accurata. Si cui medium aſſumere libeat, \\ per me id quidem ei liceat, ut M E ſit # 7955. # 5.
            <lb/>
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            <s xml:id="echoid-s9015" xml:space="preserve">Verum enim vero ut noſtram induſtriam cunctis probem, at-
              <lb/>
            que ſumma cum ſedulitate ac diligentia in hoc opere nos verſatos
              <lb/>
            evidentiſſime oſtendam, novam hic Gæodæſiam exhibeo, qua </s>
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