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="416" file="0430" n="430" rhead="DISSERTATIO"/>
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          dam & Bergam ad Somum # 9440, 3, 2`.
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          Obſervatur angulus Q V R # 89 gr. 31`;.
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          Unde per Triangulorum doctrinam datis cruribus & \\ angulo ab ipſis comprehenſo dabitur baſis Q R diſtan- \\ tia inter Dordracum & Bergam ad Somum # 11725, 1`.
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          Et angulus V R Q # 53 gr. 37`;, 15``;.
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          Et angulus V Q R # 36 gr. 51`;, 45``;.
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          </note>
        </div>
        <div xml:id="echoid-div333" type="section" level="1" n="333">
          <head xml:id="echoid-head434" xml:space="preserve">
            <emph style="sc">Problema</emph>
          XLI.</head>
          <head xml:id="echoid-head435" style="it" xml:space="preserve">Triangulum V L Q Breda, Bommelia, Berga ad
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          Somum.</head>
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          Per Problema XXXV datur latus V L diſtantia in- \\ ter Bredam & Bommeliam # 10945.
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          Per Problema XXXIX datur V Q diſtantia inter Bre- \\ dam & Bergam ad Somum # 9440, 3, 2.
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          Eſt angulus Q V L inter ambo crura # 159 gr. 37`;.
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          Angulus V L Q # 9 gr. 26`;.
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          Angulus V Q L # 10 gr. 57`;.
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          Unde datur diſtantia L Q inter Bommeliam & Bergam \\ ad Somum. # 20061, 3.
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          </note>
        </div>
        <div xml:id="echoid-div334" type="section" level="1" n="334">
          <head xml:id="echoid-head436" xml:space="preserve">
            <emph style="sc">Problema</emph>
          XLII.</head>
          <head xml:id="echoid-head437" style="it" xml:space="preserve">Triangulum E I ?, Leida, Harlemum, Alcmaria.</head>
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            <lb/>
          Per Problema XXV datur E I diſtantia inter Lei- \\ dam & Harlemum # 7053, 4, 8.
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          Per Problema XXIX datur I ? diſtantia inter Har- \\ lemum & Alcmariam # 7695, 4, 2.
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          Ex obſervatione ipſa angulus E I ? # 172. 27`;.
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          Quamobrem E ? diſtantia Alcmariæ & Leida dabi- \\ tur. # 14724.
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          Et angulus I E ? # 3 gr. 56`;, 15``;.
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          Et angulus E ? I # 3 gr. 36`;, 45``;.
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          </note>
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