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-s2417" xml:space="preserve">
              <pb o="100" file="0114" n="114" rhead="DISSERTATIO"/>
            hilominus vim recepit geſtandi pondus 4 granorum.</s>
            <s xml:id="echoid-s2418" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2419" xml:space="preserve">Omnia hæc Experimenta clare probaverunt Magnetis vim non in-
              <lb/>
            tremore partium conſiſtere, quum communicetur cum Ferro ipſum
              <lb/>
            non attingente, aut ducto ſupra pannum tremores ſuſfocaturum; </s>
            <s xml:id="echoid-s2420" xml:space="preserve">ſed
              <lb/>
            ad intervallum a Magnete inſigne fieri virtutis attrahentis commu-
              <lb/>
            nicationem; </s>
            <s xml:id="echoid-s2421" xml:space="preserve">hæc indicant Magnetem medium in Atmoſphæra ſuarum
              <lb/>
            virium, quæ ad notabilem diſtantiam diffunduntur, hærere.</s>
            <s xml:id="echoid-s2422" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2423" xml:space="preserve">4. </s>
            <s xml:id="echoid-s2424" xml:space="preserve">Quoniam Experimenta cum prioribus cylindris aut parallelo-
              <lb/>
            pipedis ferreis mihi non ſatisfecerant, confectæ fuerunt 6 laminæ
              <lb/>
            rectangulæ, accurate æque craſſæ, quam proxime {1/100} pollic.
              <lb/>
            </s>
            <s xml:id="echoid-s2425" xml:space="preserve">erant quoque æque longæ, nempe 4 pollicum, latitudi-
              <lb/>
            ne erant 1, 2, 3, 4, 5, 6 linearum: </s>
            <s xml:id="echoid-s2426" xml:space="preserve">hæ omnes ter ſuper eo-
              <lb/>
            dem polo Magnetis cum eadem vi applicatæ, æque celeriter ductæ
              <lb/>
            fuerunt, ut æquabiliter vi Magneticâ imprægnarentur: </s>
            <s xml:id="echoid-s2427" xml:space="preserve">tenuiſſima
              <lb/>
            erat prima, quæ modo pondus 1 {1/4} grani ab una ſui extremitate ſu-
              <lb/>
            ſpendit.</s>
            <s xml:id="echoid-s2428" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2429" xml:space="preserve">Altera latitudinis duarum linearum geſtavit 10 {3/8} gran.</s>
            <s xml:id="echoid-s2430" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2431" xml:space="preserve">Tertia latitudinis 3 linearum geſtavit 7 {5/8} gran.</s>
            <s xml:id="echoid-s2432" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2433" xml:space="preserve">Quarta latitudinis 4 linearum tulit 2 grana.</s>
            <s xml:id="echoid-s2434" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2435" xml:space="preserve">Quinta latitudinis 5 linearum tulit 1 {1/2} gran.</s>
            <s xml:id="echoid-s2436" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2437" xml:space="preserve">Sexta latitudinis 6 linearum tulit 1 {1/10} gran.</s>
            <s xml:id="echoid-s2438" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2439" xml:space="preserve">Quæ Experimenta etiam modo probant id, quod ſuperius innui-
              <lb/>
            mus, Ferrum determinatæ latitudinis viribus attrahentibus maximis
              <lb/>
            a Magnete imprægnari, alia autem magis minuſve lata ferramenta
              <lb/>
            minori vi donari; </s>
            <s xml:id="echoid-s2440" xml:space="preserve">præterea nulla proportio inter latitudines & </s>
            <s xml:id="echoid-s2441" xml:space="preserve">vires
              <lb/>
            obſervatas datur conſtans.</s>
            <s xml:id="echoid-s2442" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2443" xml:space="preserve">5. </s>
            <s xml:id="echoid-s2444" xml:space="preserve">Tandem explorandum erat, an Ferrum altero longius majo-
              <lb/>
            ribus viribus a Magnete imbueretur. </s>
            <s xml:id="echoid-s2445" xml:space="preserve">Quamobrem lamina ferrea,
              <lb/>
            ejuſdem craſſitiei cum 6 prioribus, 5 lineas lata, pollices 13 {1/4} lon-
              <lb/>
            ga ſuper eodem Magnetis polo ter ducta fuit, uti ſuperiores; </s>
            <s xml:id="echoid-s2446" xml:space="preserve">hæc ab
              <lb/>
            extremo geſtavit pondus ferreum 25 granorum: </s>
            <s xml:id="echoid-s2447" xml:space="preserve">abbreviata ut mo-
              <lb/>
            do eſſet 10 pollices longa, iterumque ter ducta ſuper eodem Ma-
              <lb/>
            gnetis polo geſtavit 33 grana; </s>
            <s xml:id="echoid-s2448" xml:space="preserve">cum erat 9 pollicum ſuſtinuit modo
              <lb/>
            19 gran. </s>
            <s xml:id="echoid-s2449" xml:space="preserve">cum erat 8 pollicum geſtavit 17 grana. </s>
            <s xml:id="echoid-s2450" xml:space="preserve">& </s>
            <s xml:id="echoid-s2451" xml:space="preserve">4 longa polli-
              <lb/>
            ces geſtavit modo 1 {1/2} gran.</s>
            <s xml:id="echoid-s2452" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2453" xml:space="preserve">Ex hoc Experimento etiam conſtat poſito ejuſdem latitudinis & </s>
            <s xml:id="echoid-s2454" xml:space="preserve"/>
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