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-div277" type="section" level="1" n="277">
          <head xml:id="echoid-head321" xml:space="preserve">XIX.
            <emph style="sc">Problema</emph>
          </head>
          <head xml:id="echoid-head322" style="it" xml:space="preserve">Triangulum ? V L. Dordracum, Trajectum,
            <lb/>
          Bommelia.</head>
          <note position="right" xml:space="preserve">
            <lb/>
          Per Problema VII. datur R L, diſtantia inter Dor- \\ dracum & Trajectum # 11646. # 1.
            <lb/>
          Ex obſervatis autem angulus R V L # 62 gr. # 13 ſcr.
            <lb/>
          Et angulus V R L # 44 gr. # 27 ſcr.
            <lb/>
          Et inde reliquus angulus V L R # 73 gr. # 20 ſcr.
            <lb/>
          Atque inde per doctrinam triangulorum invenietur \\ R L, diſtantia inter Dordracum & Bommeliam # 10755. # 3.
            <lb/>
          Et V L diſtantia inter Trajectum & Bomme- \\ liam # 8513. # 3.
            <lb/>
          </note>
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        <div xml:id="echoid-div278" type="section" level="1" n="278">
          <head xml:id="echoid-head323" xml:space="preserve">XX.
            <emph style="sc">Problema</emph>
          </head>
          <head xml:id="echoid-head324" style="it" xml:space="preserve">Triangulum E V L. Leida, Trajectum, Bommelia.</head>
          <note position="right" xml:space="preserve">
            <lb/>
          Per Problema VI. datur E V diſtantia inter Leidam \\ & Trajectum # 11584. # 0.
            <lb/>
          Per Problema XVIII & XIX aſſumam V L diſtan- \\ tiam inter Trajectum & Bommeliam # 85150. # 0.
            <lb/>
          Et ex obſervatis angulus E V L # 116 gr. # 23 ſcr.
            <lb/>
          Unde per doctrinam triangulorum dabitur E L di- \\ ſtantia inter Leidam & Bommeliam # 17156. # 9.
            <lb/>
          Et angulus V E L # 26 gr. # 24 ſcr.
            <lb/>
          Et angulus V L E # 37 gr. # 13 ſcr.
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          </note>
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