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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[131.] EXPERIMENTUM CVI.
Page: 239 (225)
[132.] EXPERIMENTUM CVII.
Page: 240 (226)
[133.] EXPERIMENTUM CVIII.
Page: 243 (229)
[134.] EXPERIMENTUM CIX. DE FABRICA VERSORIORUM.
Page: 243 (229)
[135.] CAPUT QUARTUM.
Page: 249 (235)
[136.] EXPERIMENTUM CX.
Page: 249 (235)
[137.] EXPERIMENTUM CXI.
Page: 250 (236)
[138.] EXPERIMENTUM CXII.
Page: 251 (237)
[139.] EXPERIMENTUM CXIII.
Page: 252 (238)
[140.] EXPERIMENTUM CXIV.
Page: 253 (239)
[141.] EXPERIMENTUM CXV.
Page: 254 (240)
[142.] EXPERIMENTUM CXVI.
Page: 255 (241)
[143.] EXPERIMENTUM CXVII.
Page: 256 (242)
[144.] EXPERIMENTUM CXVIII.
Page: 256 (242)
[145.] EXPERIMENTUM CXIX.
Page: 257 (243)
[146.] EXPERIMENTUM CXX.
Page: 257 (243)
[147.] EXPERIMENTUM CXXI.
Page: 258 (244)
[148.] EXPERIMENTUM CXXII.
Page: 259 (245)
[149.] EXPERIMENTUM CXXIII.
Page: 260 (246)
[150.] EXPERIMENTUM CXXIV.
Page: 260 (246)
[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)
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              <pb o="240" file="0254" n="254" rhead="DISSERTATIO"/>
            polus ſe contigerit, vis directione oppoſita exiens & </s>
            <s xml:id="echoid-s5668" xml:space="preserve">ſibi æquilibra-
              <lb/>
            ta, ſe neceſſario deſtruit, ita ut Ferrum aliud attrahi nequeat,
              <lb/>
            quantum enim attraheretur ab uno fili polo, tantum repelleretur
              <lb/>
            ab altero, hinc actione nulla ab utroque ſimul movetur: </s>
            <s xml:id="echoid-s5669" xml:space="preserve">quia au-
              <lb/>
            tem uterque polus ſe attrahit, vim retinere deberet; </s>
            <s xml:id="echoid-s5670" xml:space="preserve">imo eam reti-
              <lb/>
            net & </s>
            <s xml:id="echoid-s5671" xml:space="preserve">immutatam, ſi filum ita tantummodo inflexum fuerit, ut
              <lb/>
            ſponte ſe reſtituat in priorem rectum ſitum; </s>
            <s xml:id="echoid-s5672" xml:space="preserve">ſed amittit partem vir-
              <lb/>
            tutis cum ita inflectatur, ut ſitus partium mutetur, aſperaque red-
              <lb/>
            datur ſuperſicies, quemadmodum ſupra in Exper. </s>
            <s xml:id="echoid-s5673" xml:space="preserve">CXIII. </s>
            <s xml:id="echoid-s5674" xml:space="preserve">demon-
              <lb/>
            ſtratum fuit: </s>
            <s xml:id="echoid-s5675" xml:space="preserve">aſt ſubtilem Derhami obſervationem nondum intelli-
              <lb/>
            gimus, quid enim dies aut veſpera afferre poteſt viribus magneti-
              <lb/>
            cis, ita ut hoc tempore maneant ſuperſtites, altero evaneſcant? </s>
            <s xml:id="echoid-s5676" xml:space="preserve">non
              <lb/>
            Lux aliquid hic contribuit, tum enim potius diurnis horis maneret
              <lb/>
            vis in filis inflexis, quam veſpertinis: </s>
            <s xml:id="echoid-s5677" xml:space="preserve">non calor aut frigus rarefa-
              <lb/>
            ctione aut condenſatione eſt cauſa, quippe dies hyemales ſunt fri-
              <lb/>
            gidiores noctibus æſtivis, quare hyeme ſemper ſuperſtes vis obſer-
              <lb/>
            varetur, ſi a frigore penderet: </s>
            <s xml:id="echoid-s5678" xml:space="preserve">nunc modo admirandam proprieta-
              <lb/>
            tem virtutis Magneticæ adnotare licet.</s>
            <s xml:id="echoid-s5679" xml:space="preserve"/>
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          <head xml:id="echoid-head150" xml:space="preserve">EXPERIMENTUM CXV.</head>
          <p>
            <s xml:id="echoid-s5680" xml:space="preserve">Fili ferrei, Magneticâ vi imprægnati, altera extremitas in for-
              <lb/>
            cipe teneatur firme, prehenſa altera extremitate intorqueatur totum
              <lb/>
            filum, ita ut axis ſemper maneat idem, ſive immobilis & </s>
            <s xml:id="echoid-s5681" xml:space="preserve">proinde
              <lb/>
            omnium partium internus ſitus mutetur, variis abſolutis intorſioni-
              <lb/>
            bus obſervatur vis directrix fili multum debilitata, & </s>
            <s xml:id="echoid-s5682" xml:space="preserve">aliquando in-
              <lb/>
            verſa, ita ut extremitas, quæ attrahebatur antea â polo Magnetis
              <lb/>
            Boreo, nunc ab eo repellatur: </s>
            <s xml:id="echoid-s5683" xml:space="preserve">Cum variis filis hoc Experimentum
              <lb/>
            inſtitutum diverſa phænomena exhibet, cum enim filum nulla con-
              <lb/>
            ſequentia puncta habuerit ante intorſionem, eâ peractâ viſum
              <lb/>
            fuit accepiſſe Puncta Conſequentia varia, nunc ab axis cuſpide
              <lb/>
            Borea attracta, nunc repulſa, motâ nimirum Acu ſecundum to-
              <lb/>
            tam fili longitudinem, quemadmodum Doctiſſimus Derhamus etiam
              <lb/>
            obſervavit.</s>
            <s xml:id="echoid-s5684" xml:space="preserve"/>
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