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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[181.] EXPERIMENTUM V.
Page: 293 (279)
[182.] EXPERIMENTUM VI.
Page: 293 (279)
[183.] EXPERIMENTUM VII.
Page: 294 (280)
[184.] EXPERIMENTUM VIII.
Page: 294 (280)
[185.] EXPERIMENTUM IX.
Page: 294 (280)
[186.] EXPERIMENTUM X.
Page: 295 (281)
[187.] EXPERIMENTUM XI.
Page: 296 (282)
[188.] EXPERIMENTUM XII.
Page: 297 (283)
[189.] EXPERIMENTUM XIII.
Page: 297 (283)
[190.] EXPERIMENTUM XIV.
Page: 298 (284)
[191.] EXPERIMENTUM. XV.
Page: 298 (284)
[192.] EXPERIMENTUM XVI.
Page: 302 (288)
[193.] EXPERIMENTUM XVII.
Page: 303 (289)
[194.] EXPERIMENTUM XVIII.
Page: 307 (293)
[195.] CAPUT SECUNDUM. De Tubis æque longis diver ſarum diametrorum.
Page: 309 (295)
[196.] CAPUT TERTIUM. De Adſcenſu variorum Fluidorum in eundem Tubum.
Page: 312 (298)
[197.] CAPUT QUARTUM. De Tubis rectis ſed diver ſam diametrum in ſua longitudine continentibus.
Page: 318 (304)
[198.] EXPERIMENTUM X.
Page: 319 (305)
[199.] EXPERIMENTUM XI.
Page: 319 (305)
[200.] EXPERIMENTUM. XII.
Page: 320 (306)
[201.] EXPERIMENTUM XIII.
Page: 321 (307)
[202.] EXPERIMENTUM XIV.
Page: 322 (308)
[203.] EXPERIMENTUM XV.
Page: 322 (308)
[204.] EXPERIMENTUM XVI.
Page: 322 (308)
[205.] EXPERIMENTUM XVII.
Page: 323 (309)
[206.] EXPERIMENTUM XVIII.
Page: 323 (309)
[207.] CAPUT QUINTUM. De Tubis ubivis æque latis, ſed vario modo inflexis.
Page: 324 (310)
[208.] EXPERIMENTUM II.
Page: 324 (310)
[209.] EXPERIMENTUM III.
Page: 324 (310)
[210.] EXPERIMENTUM IV.
Page: 325 (311)
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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-
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            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
              <lb/>
            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
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            hiſce Experimentis iterum determinata longitudo Ferri requiritur;
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            </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>
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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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