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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[461.] EXPERIMENTUM XCVIII.
Page: 536 (522)
[462.] EXPERIMENTUM XCIX.
Page: 536 (522)
[463.] EXPERIMENTUM C.
Page: 537 (523)
[464.] EXPERIMENTUM CI.
Page: 538 (524)
[465.] EXPERIMENTUM CII.
Page: 538 (524)
[466.] CAPUT QUINTUM. De Cohærentia Corporum Reſpectiva.
Page: 539 (525)
[467.] EXPERIMENTUM CLVI.
Page: 555 (538)
[468.] EXPERIMENTUM CLVII.
Page: 555 (538)
[469.] EXPERIMENTUM CLVIII.
Page: 555 (538)
[470.] EXPERIMENTUM CLIX.
Page: 555 (538)
[471.] EXPERIMENTUM CLX.
Page: 555 (538)
[472.] EXPERIMENTUM CLXI.
Page: 556 (539)
[473.] EXPERIMENTUM CLXII.
Page: 558 (541)
[474.] EXPERIMENTUM CLXIII.
Page: 559 (542)
[475.] EXPERIMENTUM CLXIV.
Page: 559 (542)
[476.] EXPERIMENTUM CLXV.
Page: 559 (542)
[477.] EXPERIMENTUM CLXVI.
Page: 559 (542)
[478.] EXPERIMENTUM CLXVII.
Page: 559 (542)
[479.] EXPERIMENTUM CLXVIII.
Page: 560 (543)
[480.] EXPERIMENTUM CLXIX.
Page: 560 (543)
[481.] EXPERIMENTUM CLXX.
Page: 560 (543)
[482.] EXPERIMENTUM CLXXI.
Page: 561 (544)
[483.] EXPERIMENTUM CLXXII.
Page: 561 (544)
[484.] EXPERIMENTUM CLXXIII.
Page: 561 (544)
[485.] EXPERIMENTUM CLXXIV.
Page: 562 (545)
[486.] EXPERIMENTUM CLXXV.
Page: 562 (545)
[487.] EXPERIMENTUM CLXXVI.
Page: 562 (545)
[488.] EXPERIMENTUM CLXXVII.
Page: 562 (545)
[489.] EXPERIMENTUM CLXXVIII.
Page: 564 (547)
[490.] EXPERIMENTUM CLXXIX.
Page: 564 (547)
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            <s xml:id="echoid-s10227" xml:space="preserve">
              <pb o="450" file="0464" n="464" rhead="INTRODUCTIO AD COHÆRENTIAM"/>
            fodina 250. </s>
            <s xml:id="echoid-s10228" xml:space="preserve">pedes alta, ex quâ carbones hærentes in terra molli ef-
              <lb/>
            fodiebantur; </s>
            <s xml:id="echoid-s10229" xml:space="preserve">cur hæc terra æquali pondere ac carbones compreſſa,
              <lb/>
            non in firmam maſſam concreverat? </s>
            <s xml:id="echoid-s10230" xml:space="preserve">Sæpe Ferrum deprehenditur
              <lb/>
            in gleba ad terræ ſuperficiem: </s>
            <s xml:id="echoid-s10231" xml:space="preserve">ecce igitur ex profunda fodina e-
              <lb/>
            rutam terram mollem, ex ſuperficie Terræ metallum cohærentiſſi-
              <lb/>
            mum: </s>
            <s xml:id="echoid-s10232" xml:space="preserve">Sed an Ferrum aliudve metallum ex profundiori fodinæ parte
              <lb/>
            effoſſum eſt durius, eo quod ex parte ſuperiori elicitur? </s>
            <s xml:id="echoid-s10233" xml:space="preserve">nec hoc
              <lb/>
            comprobat experientia: </s>
            <s xml:id="echoid-s10234" xml:space="preserve">præterea Mercurius ex profundis fodinis
              <lb/>
            colligitur fluidus, in his tamen valde compreſſus fuit ab ingentibus
              <lb/>
            impoſitis montibus.</s>
            <s xml:id="echoid-s10235" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10236" xml:space="preserve">4°. </s>
            <s xml:id="echoid-s10237" xml:space="preserve">Cohærentia partium eſt vis manens inter corporum partes,
              <lb/>
            quæ non niſi per vim oppoſitæ directionis ſuperari poteſt, uti liquet
              <lb/>
            in corporum diſſolutione: </s>
            <s xml:id="echoid-s10238" xml:space="preserve">ſed ex hac Hypotheſi non ſequitur ul-
              <lb/>
            la vis inter partes corporum, ſive interna, ſive externa, neque
              <lb/>
            etiam ullarum virium in ea fit mentio.</s>
            <s xml:id="echoid-s10239" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10240" xml:space="preserve">Sed an non veroſimilior evadet, ſi addamus corpora cohærere
              <lb/>
            ob implexam partium texturam, accedentem prioribus? </s>
            <s xml:id="echoid-s10241" xml:space="preserve">conceda-
              <lb/>
            mus corpora majora ita aliquando cohærere, quæſo quomodo cor-
              <lb/>
            puſcula minima cohærebant, an minima etiam uncis ramiſve ſunt
              <lb/>
            donata? </s>
            <s xml:id="echoid-s10242" xml:space="preserve">ſi hoc, quomodo tum ſunt minima? </s>
            <s xml:id="echoid-s10243" xml:space="preserve">cum ipſi unci par-
              <lb/>
            tes diſtinctæ ſunt, ſed ſupra de his egimus,</s>
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          <p>
            <s xml:id="echoid-s10244" xml:space="preserve">Quas difficultates cum ſenſerint maturioris judicii Viri, arbitrati
              <lb/>
            ſunt mutuum ſuperficierum contactum additum hiſce tanquam
              <lb/>
            cauſam remotam, Cohærentiæ cauſas eſſe: </s>
            <s xml:id="echoid-s10245" xml:space="preserve">verum ſupra probavi-
              <lb/>
            mus ex ejuſmodi contactu non oriri ullam vim, qua corpora co-
              <lb/>
            hæreant, ſive enim ſe contingant, quæ ſibi imponuntur, ſive ſe-
              <lb/>
            orſum exſtent, ad unum ab alio ſeparandum valet eadem potentia,
              <lb/>
            quæ ad corpus æque magnum & </s>
            <s xml:id="echoid-s10246" xml:space="preserve">ſeorſim poſitum dimovendum po-
              <lb/>
            ſtulatur: </s>
            <s xml:id="echoid-s10247" xml:space="preserve">unde nec hoc modo opinioni pondus accedit.</s>
            <s xml:id="echoid-s10248" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10249" xml:space="preserve">Examinatis Philoſophorum opinionibus, reſtat ut probemus Co-
              <lb/>
            hærentiam ſolidorum pendere â vi internâ: </s>
            <s xml:id="echoid-s10250" xml:space="preserve">Demonſtravimus ſolida
              <lb/>
            tantum cohærere virium ope, vires autem ſunt externæ, vel in-
              <lb/>
            ternæ; </s>
            <s xml:id="echoid-s10251" xml:space="preserve">quæcunque vires externæ aſſignatæ fuerunt, aut non dan-
              <lb/>
            tur, aut quæ dantur non ſufficiunt exponendis phænomenis Cohæ-
              <lb/>
            rentiæ ut fuſe ſupra evictum eſt, reſtantigitur tantum vires internæ.</s>
            <s xml:id="echoid-s10252" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10253" xml:space="preserve">Quomodo autem vires internas dari cognovimus; </s>
            <s xml:id="echoid-s10254" xml:space="preserve">non </s>
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