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="403" file="0417" n="417" rhead="DE MAGNITUDINE TERRÆ."/>
        </div>
        <div xml:id="echoid-div303" type="section" level="1" n="303">
          <head xml:id="echoid-head374" xml:space="preserve">
            <emph style="sc">Problema</emph>
          XI.</head>
          <head xml:id="echoid-head375" style="it" xml:space="preserve">Tab. XV. fig. 10. Triangulum aie, Leida, Noortvicum,
            <lb/>
          Voorſcbooten.</head>
          <note position="right" xml:space="preserve">
            <lb/>
          Obſervatus eſt angulus a i e # 19 gr. 57?.
            <lb/>
          Angulus i a e # 38 gr. 58?.
            <lb/>
          Angulus i e a # 121 gr. 5?.
            <lb/>
          Datur latus e a in V problemate # 1268, 6, 3.
            <lb/>
          Hinc eruitur i e diſtantia inter Noortvicum & Lei- \\ dam # 2338, 2, 2.
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          </note>
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        <div xml:id="echoid-div304" type="section" level="1" n="304">
          <head xml:id="echoid-head376" xml:space="preserve">XII.
            <emph style="sc">Problema.</emph>
          </head>
          <head xml:id="echoid-head377" style="it" xml:space="preserve">Tab. XV. fig. 9. Diſtantia inter Leidam & Noortvicum alio
            <lb/>
          modo quæſita.</head>
          <note position="right" xml:space="preserve">
            <lb/>
          Aſſumta fuit baſis a e # 471, 5, 0.
            <lb/>
          Obſervatus fuit angulus o e a # 88 gr. 26?.
            <lb/>
          Angulus o a e # 68 gr. 50?.
            <lb/>
          Angulus a o e # 22 gr. 44?.
            <lb/>
          Unde eruitur latus a o # 1219, 6, 4.
            <lb/>
          Et latus o e # 1137, 7, 1.
            <lb/>
          In Triangulo a e u obſervatus eſt angulus u e a # 91 gr. 56?.
            <lb/>
          Angulus u a e # 67 gr. 4?.
            <lb/>
          Angulus a u e # 21 gr. 0.
            <lb/>
          Unde eruitur latus u e # 1210, 5, 0.
            <lb/>
          Datis vero lateribus o e, u e & angulo intercepto \\ oeu, datur recta ou # 2338, 0, 0
            <lb/>
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        <div xml:id="echoid-div305" type="section" level="1" n="305">
          <head xml:id="echoid-head378" xml:space="preserve">XIII.
            <emph style="sc">Problema</emph>
          </head>
          <head xml:id="echoid-head379" style="it" xml:space="preserve">Tab. XV. fig. 11. Triangulum A E B, Haga, Leida,
            <lb/>
          Noortvicum.</head>
          <note position="right" xml:space="preserve">
            <lb/>
          Obſervatus eſt angulus A E B # 106 gr. 3?.
            <lb/>
          </note>
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