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-s1150" xml:space="preserve">
              <pb o="50" file="0064" n="64" rhead="DISSERTATIO."/>
            longiorem acum ad diſtantiam 9. </s>
            <s xml:id="echoid-s1151" xml:space="preserve">poll. </s>
            <s xml:id="echoid-s1152" xml:space="preserve">à Magnete efficere angulum
              <lb/>
            paulo majorem, quam acum breviorem ad diſtantiam 3. </s>
            <s xml:id="echoid-s1153" xml:space="preserve">pollicum.
              <lb/>
            </s>
            <s xml:id="echoid-s1154" xml:space="preserve">Acum breviorem ad diſtant. </s>
            <s xml:id="echoid-s1155" xml:space="preserve">9. </s>
            <s xml:id="echoid-s1156" xml:space="preserve">poll. </s>
            <s xml:id="echoid-s1157" xml:space="preserve">facere angulum 9. </s>
            <s xml:id="echoid-s1158" xml:space="preserve">grad. </s>
            <s xml:id="echoid-s1159" xml:space="preserve">minorem,
              <lb/>
            quam longiorem in eadem diſtantia: </s>
            <s xml:id="echoid-s1160" xml:space="preserve">ſed hæc paradoxa facile in-
              <lb/>
            telligentur, ſi conſideramus diſproportionem longitudinis acus, nam
              <lb/>
            cuſpis longioris acus ad diſt. </s>
            <s xml:id="echoid-s1161" xml:space="preserve">9. </s>
            <s xml:id="echoid-s1162" xml:space="preserve">poll. </s>
            <s xml:id="echoid-s1163" xml:space="preserve">erat propior Magneti 1. </s>
            <s xml:id="echoid-s1164" xml:space="preserve">poll. </s>
            <s xml:id="echoid-s1165" xml:space="preserve">
              <lb/>
            quam cuſpis brevioris acûs; </s>
            <s xml:id="echoid-s1166" xml:space="preserve">& </s>
            <s xml:id="echoid-s1167" xml:space="preserve">cuſpis brevioris acûs in diſtantia
              <lb/>
            9. </s>
            <s xml:id="echoid-s1168" xml:space="preserve">pollic. </s>
            <s xml:id="echoid-s1169" xml:space="preserve">a Magnete, diſtabat 5. </s>
            <s xml:id="echoid-s1170" xml:space="preserve">poll. </s>
            <s xml:id="echoid-s1171" xml:space="preserve">plus, quam acus majoris,
              <lb/>
            cum Magnes in eodem gradu Quadrantis erat: </s>
            <s xml:id="echoid-s1172" xml:space="preserve">Unde ad hanc diſpro-
              <lb/>
            portionem attendendum. </s>
            <s xml:id="echoid-s1173" xml:space="preserve">Notandum præterea, Magnetem in diſtantia
              <lb/>
            5. </s>
            <s xml:id="echoid-s1174" xml:space="preserve">ped. </s>
            <s xml:id="echoid-s1175" xml:space="preserve">ab acu, facere angulum 2. </s>
            <s xml:id="echoid-s1176" xml:space="preserve">grad. </s>
            <s xml:id="echoid-s1177" xml:space="preserve">cum una acu, & </s>
            <s xml:id="echoid-s1178" xml:space="preserve">2 {1/2} grad. </s>
            <s xml:id="echoid-s1179" xml:space="preserve">
              <lb/>
            cum altera acu: </s>
            <s xml:id="echoid-s1180" xml:space="preserve">ſed in majori diſtantiâ non fieri obſer vabilem mutatio-
              <lb/>
            nem in Acu: </s>
            <s xml:id="echoid-s1181" xml:space="preserve">Ita ut vis Magnetica extendatur eouſque ad 5. </s>
            <s xml:id="echoid-s1182" xml:space="preserve">ped. </s>
            <s xml:id="echoid-s1183" xml:space="preserve">in
              <lb/>
            quibus proportiones capi poſſunt, ſed in majoribus diſtantiis, vis
              <lb/>
            Magnetis eſt adeo debilis, ut nihil certi obſervetur.</s>
            <s xml:id="echoid-s1184" xml:space="preserve"/>
          </p>
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            <lb/>
          # # # # Experimenta cum breviori # # # # Experimenta cum Longiori Acu
            <lb/>
          Diſtantiæ \\ Acus a \\ Magn. in \\ poll. # # Anguli ad \\ quaſſibet \\ diſtantias \\ facti ab Acu # Differentiæ \\ comparatæ \\ inter ſe, in \\ Minutis # Diſtantiæ \\ Acus a \\ Magn. in \\ poll. # # Anguli ad \\ quaſlibet \\ diſtantias \\ factiab Acu # Differentiæ \\ comparatæ \\ cum priori- \\ bus in Mi- \\ nutis.
            <lb/>
          # Gr. # M. # # # Gr. # M.
            <lb/>
          3 # 87 # 0 # 180 # 9 # 87 # 30 # 345
            <lb/>
          6 # 84 # 0 # 330 # 12 # 81 # 45 # 570
            <lb/>
          9 # 78 # 30 # 570 # 15 # 72 # 15 # 1137
            <lb/>
          12 # 69 # 0 # 735 # 18 # 53 # 20 # 1100
            <lb/>
          15 # 56 # 45 # 795 # 21 # 35 # 0 # 660
            <lb/>
          18 # 43 # 30 # 630 # 24 # 24 # 10 # 380
            <lb/>
          21 # 33 # 0 # 540 # 27 # 17 # 50 # 280
            <lb/>
          24 # 24 # 0 # 360 # 30 # 13 # 10 # 180
            <lb/>
          27 # 18 # 0 # 270 # 33 # 10 # 10 # 130
            <lb/>
          30 # 13 # 30 # 150 # 36 # 8 # 0 # 90
            <lb/>
          33 # 11 # 0 # 135 # 39 # 6 # 30 # 75
            <lb/>
          36 # 8 # 45 # 105 # 42 # 5 # 15 # 65
            <lb/>
          39 # 7 # 0 # 90 # 45 # 4 # 10 # 40
            <lb/>
          42 # 5 # 30 # 60 # 48 # 3 # 30 # 30
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