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

Table of contents

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[151.] EXPERIMENTUM CXXV.
Page: 261 (247)
[152.] EXPERIMENTUM CXXVI.
Page: 261 (247)
[153.] EXPERIMENTUM CXXVII.
Page: 262 (248)
[154.] EXPERIMENTUM CXXVIII.
Page: 263 (249)
[155.] EXPERIMENTUM CXXIX.
Page: 263 (249)
[156.] EXPERIMENTUM CXXX.
Page: 264 (250)
[157.] CAPUT QUINTUM. De vi Magnetica Ferri.
Page: 267 (253)
[158.] EXPERIMENTUM CXXXI.
Page: 268 (254)
[159.] EXPERIMENTUM CXXXII.
Page: 269 (255)
[160.] EXPERIMENTUM CXXXIII.
Page: 270 (256)
[161.] EXPERIMENTUM CXXXIV.
Page: 272 (258)
[162.] EXPERIMENTUM CXXXV.
Page: 273 (259)
[163.] EXPERIMENTUM CXXXVI.
Page: 274 (260)
[164.] EXPERIMENTUM CXXXVII.
Page: 276 (262)
[165.] EXPERIMENTUM CXXXVIII.
Page: 279 (265)
[166.] EXPERIMENTUM CXXXIX.
Page: 279 (265)
[167.] EXPERIMENTUM CXL.
Page: 280 (266)
[168.] EXPERIMENTUM CXLI.
Page: 281 (267)
[169.] EXPERIMENTUM CXLII.
Page: 281 (267)
[170.] EXPERIMENTUM CXLIII.
Page: 281 (267)
[171.] EXPERIMENTUM CXLIV.
Page: 282 (268)
[172.] EXPERIMENTUM CXLV.
Page: 282 (268)
[173.] EXPERIMENTUM CXLVI.
Page: 282 (268)
[174.] FINIS.
Page: 284 (270)
[175.] PHYSICA EXPERIMENTALIS DE TUBIS CAPILLARIBUS VITREIS.
Page: 285
[176.] PHYSICA EXPERIMENTALIS DE TUBIS CAPILLARIBUS VITREIS. PRÆFATIO.
Page: 287 (273)
[177.] CAPUT PRIMUM. De Adſcenſu Fluidi in tubos diverſarum longitudinum & ejuſdem diametri. EXPERIMENTUM I.
Page: 291 (277)
[178.] EXPERIMENTUM II.
Page: 292 (278)
[179.] EXPERIMENTUM III.
Page: 292 (278)
[180.] EXPERIMENTUM IV.
Page: 292 (278)
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            Ferri attrahet, haud aliter ac ſi lamella vi debilis Magnetis impræ-
              <lb/>
            gnata fuiſſet.</s>
            <s xml:id="echoid-s6380" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6381" xml:space="preserve">Cl Reaumurius hoc Experimentum inſtituit cum ferramentis gran-
              <lb/>
            dibus, tum cum filis optimi ut & </s>
            <s xml:id="echoid-s6382" xml:space="preserve">mollis fragilisque Ferri; </s>
            <s xml:id="echoid-s6383" xml:space="preserve">cum
              <lb/>
            Chalybe temperato & </s>
            <s xml:id="echoid-s6384" xml:space="preserve">non temperato: </s>
            <s xml:id="echoid-s6385" xml:space="preserve">poſitis cæteris æqualibus,
              <lb/>
            quo Ferrum diffractum eſt mollius, eo eſt magis fibroſum, & </s>
            <s xml:id="echoid-s6386" xml:space="preserve">non
              <lb/>
            niſi pluribus flexionibus frangitur, ſed eo majorem vim attractri-
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            cem acquirit. </s>
            <s xml:id="echoid-s6387" xml:space="preserve">Ferrum fragile, citius ruptum, minori vi imprægna-
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            tur, minori adhucdum Chalybs temperatus; </s>
            <s xml:id="echoid-s6388" xml:space="preserve">qui prout mollior ri-
              <lb/>
            gidiorve fuerit, ita fortius vel imbecillius attrahit. </s>
            <s xml:id="echoid-s6389" xml:space="preserve">In genere, omne
              <lb/>
            Ferrum flexione fractum vim Magneticam habet, ſed interdum
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            modo diei ſpatio perdurantem: </s>
            <s xml:id="echoid-s6390" xml:space="preserve">Memorat inſuper Autor, non eſſe
              <lb/>
            ſenſibilem vim attractricem, ſi Ferrum tantummodo craſſitiem A-
              <lb/>
            cûs habuerit; </s>
            <s xml:id="echoid-s6391" xml:space="preserve">neque eam augeri in ratione craſſitiei laminarum,
              <lb/>
            ſed eſſe maximam in Ferro craſſitie digitum minimum æquante: </s>
            <s xml:id="echoid-s6392" xml:space="preserve">In
              <lb/>
            hiſce Experimentis iterum determinata longitudo Ferri requiritur;
              <lb/>
            </s>
            <s xml:id="echoid-s6393" xml:space="preserve">flecte enim & </s>
            <s xml:id="echoid-s6394" xml:space="preserve">rumpe in medio Ferrum, cujus longitudo unius pedis,
              <lb/>
            ambo fragmenta vim manifeſtam oſtendent: </s>
            <s xml:id="echoid-s6395" xml:space="preserve">aſt ita crebro in flexum dif-
              <lb/>
            fringe, ut alterutrum fragmentum non ſuperet ſua longitudine di-
              <lb/>
            gitum, hoc limaturam, utcunque ſubtilem, attrahet nequaquam,
              <lb/>
            altero interim longiſſimo fragmento vi validâ eam alliciente.</s>
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            <s xml:id="echoid-s6397" xml:space="preserve">In hiſce Experimentis fractura duntaxat vim Magneticam acqui-
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            rit, alia extrema permanent comparata eodem modo ac ante in-
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            ſtitutum Experimentum.</s>
            <s xml:id="echoid-s6398" xml:space="preserve"/>
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          <head xml:id="echoid-head177" xml:space="preserve">EXPERIMENTUM CXL.</head>
          <p>
            <s xml:id="echoid-s6399" xml:space="preserve">Sed plura elegantia tentamina cum Ferro debentur ſubtili Reau-
              <lb/>
            murio, inter quæ hoc etiam: </s>
            <s xml:id="echoid-s6400" xml:space="preserve">Filum ferreum craſſitiei circiter digiti
              <lb/>
            minimi, longitudinis 2 {1/2} pedum in forcipe tenuit, atque 5 digitis ab
              <lb/>
            extremo crebris flexionibus diffregit, utraque ſuperficies fracturæ
              <lb/>
            tantum virtutis Magneticæ habuit, qua clavum elevaret exi-
              <lb/>
            guum.</s>
            <s xml:id="echoid-s6401" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6402" xml:space="preserve">Deinde longiſſimum fragmentum, eidem forcipi inſertum, ad di-
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            ſtantiam 1 {1/2} pollicis a fractura aliquoties inflexit, id tamen non fran-
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            gens; </s>
            <s xml:id="echoid-s6403" xml:space="preserve">hinc prioris fracturæ ſuperficies majorem vim attrahendi </s>
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