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-div410" type="section" level="1" n="410">
          <p>
            <s xml:id="echoid-s11611" xml:space="preserve">
              <pb o="496" file="0510" n="510" rhead="INTRODUCTIO AD COHÆRENTIAM"/>
            quod eſt maxime neceſſarium, cæteroquin enim filum circumvol-
              <lb/>
            tur, licet aliquoties circumductum, circum ſuperficiem rotun-
              <lb/>
            dam cum ipſi pondus appenditur: </s>
            <s xml:id="echoid-s11612" xml:space="preserve">in E & </s>
            <s xml:id="echoid-s11613" xml:space="preserve">D ſunt partes quadrangu-
              <lb/>
            lares, quæ congruunt foraminibus quadratis inſculptis uncis,
              <lb/>
            hoc factum fuit ne pinna circumvolveretur in unco: </s>
            <s xml:id="echoid-s11614" xml:space="preserve">Caput C qua-
              <lb/>
            drangulum eſt, ut ope clavis circumverti poſſit pinna in un-
              <lb/>
            co, filumque circumduci metallicum: </s>
            <s xml:id="echoid-s11615" xml:space="preserve">quando autem circum-
              <lb/>
            vertitur pars D, paulum trahitur extra foramen unci B, tum enim
              <lb/>
            in foraminibus quadratis unci A & </s>
            <s xml:id="echoid-s11616" xml:space="preserve">B partes cylindricæ K & </s>
            <s xml:id="echoid-s11617" xml:space="preserve">F hu-
              <lb/>
            jus pinnæ jacent, quo modo commode filum metallicum ſupra fu-
              <lb/>
            ſum hoc quaſi ducitur. </s>
            <s xml:id="echoid-s11618" xml:space="preserve">Altera pinnæ extremitas F oblongo fora-
              <lb/>
            mine donata eſt, ut ope clavi P poſſit in uncis firmari. </s>
            <s xml:id="echoid-s11619" xml:space="preserve">Totus appara-
              <lb/>
            tus cum filo, aliquoties circum utramque pinnam circumducto, repræ-
              <lb/>
            ſentatur in Tab. </s>
            <s xml:id="echoid-s11620" xml:space="preserve">XX. </s>
            <s xml:id="echoid-s11621" xml:space="preserve">fig. </s>
            <s xml:id="echoid-s11622" xml:space="preserve">3. </s>
            <s xml:id="echoid-s11623" xml:space="preserve">atque eo modo Machinæ divulſoriæ fuit
              <lb/>
            applicatus, quemadmodum antea Ligna examinata: </s>
            <s xml:id="echoid-s11624" xml:space="preserve">pondus unius
              <lb/>
            cujusque unci fuit {3/4} libræ, quod cum uni extremitati ſtateræ appen-
              <lb/>
            debatur a reliquo pondere in ſtatera notato ſubducendum erat, ut
              <lb/>
            verum pondus, Cohærentiæ filorum æquale, haberetur: </s>
            <s xml:id="echoid-s11625" xml:space="preserve">Quibus
              <lb/>
            præmiſſis ad Experimentorum eventus accedam.</s>
            <s xml:id="echoid-s11626" xml:space="preserve"/>
          </p>
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        <div xml:id="echoid-div411" type="section" level="1" n="411">
          <head xml:id="echoid-head522" xml:space="preserve">EXPERIMENTUM XLVIII.</head>
          <p>
            <s xml:id="echoid-s11627" xml:space="preserve">Filum cylindricum craſſitiei A, Cupri rubri Suecici, per totam
              <lb/>
            ſuam longitudinem bene ſolidum & </s>
            <s xml:id="echoid-s11628" xml:space="preserve">abſque fiſſuris, rimis, aut inæquali-
              <lb/>
            tatibus, in igne adeo molle, ac fieri poteſt, redditum, ſuſtinuit tractum
              <lb/>
            perpendiculariter libr. </s>
            <s xml:id="echoid-s11629" xml:space="preserve">299 {1/4}, a quibus tamen rumpebatur, filum inter
              <lb/>
            medios uncos tenſum ab appenſo pondere attenuabatur interim eo
              <lb/>
            plus, quo plus ponderis applicabatur, unde diameter ejus, poſtquam
              <lb/>
            ruptum fuit, deprehendebatur {9/10} lineæ, quæ antea fuerat {18/10} li-
              <lb/>
            neæ: </s>
            <s xml:id="echoid-s11630" xml:space="preserve">præterea ſuperficies fracturæ fuit admodum aſpera & </s>
            <s xml:id="echoid-s11631" xml:space="preserve">trans-
              <lb/>
            verſa, ſed prope fracturam cylindrus abierat in ſpeciem coni trunca-
              <lb/>
            ti, longitudinis unius lineæ, diameter fracturæ fuit {7/10} lineæ.</s>
            <s xml:id="echoid-s11632" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div412" type="section" level="1" n="412">
          <head xml:id="echoid-head523" xml:space="preserve">EXPERIMENTUM XLIX.</head>
          <p>
            <s xml:id="echoid-s11633" xml:space="preserve">Filum Cylindricum craſſitiei B, Cupri ejuſdem, ſuſtinuit </s>
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