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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            <s xml:id="echoid-s1197" xml:space="preserve">
              <pb o="52" file="0066" n="66" rhead="DISSERTATIO"/>
            tiſſimi hujus Philoſophi Experimenta adjungere, quia facta ſunt
              <lb/>
            cum Magnete & </s>
            <s xml:id="echoid-s1198" xml:space="preserve">Ferro, prius imprægnato vi Magnetica, quamobrem
              <lb/>
            diverſum hoc eſt penitus examen a noſtro, cum uſus ego tantum
              <lb/>
            fuerim vel duobus Magnetibus, vel Magnete & </s>
            <s xml:id="echoid-s1199" xml:space="preserve">Ferro puro, non poſ-
              <lb/>
            ſidente vim a Magnete ſibi communicatam: </s>
            <s xml:id="echoid-s1200" xml:space="preserve">Sumſit duas acus ver-
              <lb/>
            ſorias impoſitas cuſpidibus, quarum una erat 4 {1/2} pollices, altera 4 pedes
              <lb/>
            longa, atque Magnetem ſphæricum diametri 2 {8/10} pollicum; </s>
            <s xml:id="echoid-s1201" xml:space="preserve">hujus po-
              <lb/>
            lum Auſtralem ſemper oppoſuit acuum cuſpidibus Borealibus, admo-
              <lb/>
            vendo Magnetem verſus acum ita, ut hæc ſemper cum linea directrice
              <lb/>
            Magnetis conſtitueret angulum rectum: </s>
            <s xml:id="echoid-s1202" xml:space="preserve">tum chordas arcuum men-
              <lb/>
            ſuravit, quibus acus declinabat â naturali directione, quarum lon-
              <lb/>
            gitudines ſumebat pro iis quantitatibus, quæ exprimerent vires attra-
              <lb/>
            ctrices, loco Chordarum Sinus poſuit, quia hi ſunt dimidia Chorda-
              <lb/>
            rum, Tabulamque obſervationum dedit ſequentem.</s>
            <s xml:id="echoid-s1203" xml:space="preserve"/>
          </p>
          <note position="right" xml:space="preserve">
            <lb/>
          Diſtantia \\ in pollic. # Gradus \\ declinat. # Sinus dimidiorum \\ arcuum.
            <lb/>
          3 # 0 # 0
            <lb/>
          6 # 0 # 0
            <lb/>
          6 {1/2} # 90 # 7071
            <lb/>
          9 # 27 # 2334
            <lb/>
          12 # 13 # 1132
            <lb/>
          15 # 9 {1/4} # 848
            <lb/>
          18 # 6 {3/4} # 588
            <lb/>
          21 # 4 {1/2} # 392
            <lb/>
          24 # 3 # 262
            <lb/>
          27 # 2 # 174
            <lb/>
          30 # 1 {5/6} # 160
            <lb/>
          33 # 1 {1/2} # 131
            <lb/>
          36 # 1 {1/4} # 109
            <lb/>
          39 # 0 {5/6} # 73
            <lb/>
          42 # 0 {3/4} # 65
            <lb/>
          45 # {2/3} # 58
            <lb/>
          48 # {1/2} # 44
            <lb/>
          </note>
          <p>
            <s xml:id="echoid-s1204" xml:space="preserve">Quærantur nunc numeri diſtantiarum, & </s>
            <s xml:id="echoid-s1205" xml:space="preserve">Sinuum iis </s>
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