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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          <p>
            <s xml:id="echoid-s5947" xml:space="preserve">
              <pb o="251" file="0265" n="265" rhead="DE MAGNETE."/>
            verſa fuit verſus Occaſum, & </s>
            <s xml:id="echoid-s5948" xml:space="preserve">poſt aliquot vibrationes manſit im-
              <lb/>
            mobilis ad 42 gradus verſus Occaſum.</s>
            <s xml:id="echoid-s5949" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5950" xml:space="preserve">2°. </s>
            <s xml:id="echoid-s5951" xml:space="preserve">Acu vero in capſula primo paulum vergente verſus Ortum re-
              <lb/>
            ſpectu Acus ſuperius impoſitæ, cuſpis Septentrionalis Acûs in ca-
              <lb/>
            pſula dirigebatur verſus Ortum, ſtabatque immobilis poſt aliquot
              <lb/>
            vibrationes ad 41 gradus verſus Ortum: </s>
            <s xml:id="echoid-s5952" xml:space="preserve">adeoque tantopere a pri-
              <lb/>
            mo ſitu declinabat verſus Ortum, quam in præcedenti experimento
              <lb/>
            verſus Occaſum.</s>
            <s xml:id="echoid-s5953" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5954" xml:space="preserve">3°. </s>
            <s xml:id="echoid-s5955" xml:space="preserve">Dein ſuperiori Acu remotâ, Acus in capſula redibat ad gra-
              <lb/>
            dum 360. </s>
            <s xml:id="echoid-s5956" xml:space="preserve">tum vero iterum imponebatur vitro altera Acus, ut cuſ-
              <lb/>
            pis Septentrionalis reſpiceret Occaſum, adeoque ut ambæ Acus
              <lb/>
            ſe ad rectos angulos ſecarent. </s>
            <s xml:id="echoid-s5957" xml:space="preserve">Tum cuſpis Septentrionalis A-
              <lb/>
            cus in capſula convertebatur verſus Ortum quantitate 13 gra-
              <lb/>
            duum.</s>
            <s xml:id="echoid-s5958" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5959" xml:space="preserve">4. </s>
            <s xml:id="echoid-s5960" xml:space="preserve">Iterum ſuperiori Acu remotâ, aliaque in capſulâ quieſcente,
              <lb/>
            Acus vitro impoſita fuit cuſpide Septentrionali ſpectante Ortum,
              <lb/>
            tum cuſpis Septentrionalis Acus in capſula mota fuit verſus Occa-
              <lb/>
            ſum quantitate 13 gràduum.</s>
            <s xml:id="echoid-s5961" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5962" xml:space="preserve">5°. </s>
            <s xml:id="echoid-s5963" xml:space="preserve">Cum igitur cuſpis Septentrionalis Acûs in capſula diſtabat in
              <lb/>
            Experimento 4° a cuſpide Auſtrali Acus ſuſperioris gradibus 77. </s>
            <s xml:id="echoid-s5964" xml:space="preserve">hu-
              <lb/>
            jus cuſpis Auſtralis adducta fuit verſus Septentrionalem alterius A-
              <lb/>
            cûs quantitate 10 graduum, tum cuſpis Septentrionalis acceſſit ad
              <lb/>
            hanc 5 gradibus.</s>
            <s xml:id="echoid-s5965" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5966" xml:space="preserve">6°. </s>
            <s xml:id="echoid-s5967" xml:space="preserve">Quando Acus ſupra vitrum poſita adhuc ſua cuſpide Auſtrali
              <lb/>
            admovebatur 5 gradibus verſus Septentrionalem cuſpidem Acus in
              <lb/>
            capſula, tum ſubito cuſpis Septentrionalis accedebat ad Auſtralem
              <lb/>
            alterius, ita ut ambæ Acus immediate ſibi ſupra poſitæ quaſi eſſent,
              <lb/>
            imo elevabatur cuſpis Acus in capſula ſurſum tangendo vitrum, qua
              <lb/>
            parte Acus ſuperior jacebat.</s>
            <s xml:id="echoid-s5968" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5969" xml:space="preserve">7°. </s>
            <s xml:id="echoid-s5970" xml:space="preserve">Experimenta autem adhuc erant inſtituenda cum duabus A-
              <lb/>
            cubus, quæ ambæ ſupra cuſpidem erant mobiles; </s>
            <s xml:id="echoid-s5971" xml:space="preserve">ſed hæ poneban-
              <lb/>
            tur ita, ut cuſpides jacerent in linea recta continuata, hoc eſt di-
              <lb/>
            recte ſupra ſe mutuo, & </s>
            <s xml:id="echoid-s5972" xml:space="preserve">in diſtantia 10 linearum. </s>
            <s xml:id="echoid-s5973" xml:space="preserve">tum ambæ cuſpi-
              <lb/>
            des Acuum directæ fuerunt verſus plagam quandam Septentriona-
              <lb/>
            lem, ita tamen ut non ſibi parallelæ fuerint Acus, ſed una </s>
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