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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[521.] PROPOSITIO XLIII.
Page: 585 (568)
[522.] PROPOSITIO XLIV.
Page: 586 (569)
[523.] PROPOSITIO XLV.
Page: 587 (570)
[524.] PROPOSITIO XLVI.
Page: 588 (571)
[525.] PROPOSITIO XLVII.
Page: 589 (572)
[526.] PROPOSITIO XLVIII.
Page: 589 (572)
[527.] PROPOSITIO XLIX.
Page: 590 (573)
[528.] PROPOSITIO L.
Page: 590 (573)
[529.] PROPOSITIO LI.
Page: 591 (574)
[530.] PROPOSITIO LII.
Page: 592 (575)
[531.] EXPERIMENTUM CLXXXV.
Page: 593 (576)
[532.] PROPOSITIO LIII.
Page: 596 (579)
[533.] PROPOSITIO LIV.
Page: 598 (581)
[534.] PROPOSITIO LV.
Page: 599 (582)
[535.] PROPOSITIO LVI.
Page: 600 (583)
[536.] PROPOSITIO LVII.
Page: 601 (584)
[537.] De Conis & Pyramidibus. PROPOSITIO LVIII.
Page: 602 (585)
[538.] PROPOSITIO LIX.
Page: 602 (585)
[539.] PROPOSITIO LX.
Page: 603 (586)
[540.] PROPOSITIO LXI.
Page: 604 (587)
[541.] PROPOSITIO LXII.
Page: 605 (588)
[542.] PROPOSITIO LXIII.
Page: 605 (588)
[543.] De Conidibus Parabolicis. PROPOSITIO LXIV.
Page: 606 (589)
[544.] PROPOSITIO LXV.
Page: 607 (590)
[545.] PROPOSITIO LXVI.
Page: 608 (591)
[546.] PROPOSITIO LXVII.
Page: 609 (592)
[547.] PROPOSITIO LXVIII.
Page: 610 (593)
[548.] PROPOSITIO LXIX.
Page: 611 (594)
[549.] PROPOSITIO LXX.
Page: 611 (594)
[550.] PROPOSITIO LXXI.
Page: 612 (595)
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              <pb o="515" file="0529" n="529" rhead="CORPORUM FIRMORUM."/>
            tamen reſoluta contorſione, quemlibet funem vires librar. </s>
            <s xml:id="echoid-s12120" xml:space="preserve">92 poſſi-
              <lb/>
            dere; </s>
            <s xml:id="echoid-s12121" xml:space="preserve">Quamobrem confirmamur iterum funes compoſitos ex aliis,
              <lb/>
            per contorſionem debilitari; </s>
            <s xml:id="echoid-s12122" xml:space="preserve">atque vires determinari poſſe ope
              <lb/>
            Trianguli formati ex perpendicularibus in directionem ſpiræ, reſi-
              <lb/>
            ſtentiæ, & </s>
            <s xml:id="echoid-s12123" xml:space="preserve">appenſi ponderis. </s>
            <s xml:id="echoid-s12124" xml:space="preserve">Sed Reaumuriana obſervata anne-
              <lb/>
            ctere libet, ut multitudine Experimentorum â variis captorum Phi-
              <lb/>
            loſophis magis convincamur, & </s>
            <s xml:id="echoid-s12125" xml:space="preserve">eo citius præjudicatam opinionem
              <lb/>
            exuamus: </s>
            <s xml:id="echoid-s12126" xml:space="preserve">Funem adhibuit Vir inclytus, qui geſtare poterat libras
              <lb/>
            72, hic erat compoſitus ex tribus funiculis, evolvit funem, ut ho-
              <lb/>
            rum trium robur ſeorſim examinaret; </s>
            <s xml:id="echoid-s12127" xml:space="preserve">unus deprehenſus fuit libras
              <lb/>
            27 ferre, alter libras 33. </s>
            <s xml:id="echoid-s12128" xml:space="preserve">tertius libras 35; </s>
            <s xml:id="echoid-s12129" xml:space="preserve">ſumma trium ponderum
              <lb/>
            eſt librar. </s>
            <s xml:id="echoid-s12130" xml:space="preserve">95. </s>
            <s xml:id="echoid-s12131" xml:space="preserve">quum tamen convoluti funes in unum modo libras 72
              <lb/>
            geſtaverunt: </s>
            <s xml:id="echoid-s12132" xml:space="preserve">Præterea! alio uſus eſt fune, ex quo circiter ſuſpendebat
              <lb/>
            libras 70, nam a libris 72 frangebatur; </s>
            <s xml:id="echoid-s12133" xml:space="preserve">ex eo evolvit tres funicu-
              <lb/>
            los ipſum componentes, quorum unus ferebat libras 24, alter 28,
              <lb/>
            tertius 30; </s>
            <s xml:id="echoid-s12134" xml:space="preserve">ſumma horum ponderum eſt æqualis libris 82, quæ ma-
              <lb/>
            jor eſt, quam a fune compoſito lata fuit: </s>
            <s xml:id="echoid-s12135" xml:space="preserve">Si hæc Reaumuriana no-
              <lb/>
            ſtraque Experimenta non plane evicerint quemcunque funem com-
              <lb/>
            poſitum ex aliis debilitari convolutione in ſe mutuo, dubito an
              <lb/>
            quidem unquam aliquid demonſtratum fuerit: </s>
            <s xml:id="echoid-s12136" xml:space="preserve">prolixior evaſi quam
              <lb/>
            par erat, ſed ad errorem receptum eliminandum, ſemper quamplu-
              <lb/>
            rimum laboris impendi debet. </s>
            <s xml:id="echoid-s12137" xml:space="preserve">Reſtat ut determinemus robur non-
              <lb/>
            nullorum funium datæ craſſitiei, ut a priori cognoſcamus, quoties-
              <lb/>
            cunque aliquod pondus elevandum, vel grave onus movendum ſit,
              <lb/>
            cujus craſſitiei funis deſideretur, qui pondus geſtare valeat.</s>
            <s xml:id="echoid-s12138" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s12139" xml:space="preserve">Componuntur a reſtiariis funes tum albi, tum cinerei coloris,
              <lb/>
            quorum unum genus ex Cannabe inſolatione albefacta, alterum ex
              <lb/>
            Cannabe vulgari conficitur, utrumque genus examinavi, atque even-
              <lb/>
            tus tentaminum hi fuerunt.</s>
            <s xml:id="echoid-s12140" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div447" type="section" level="1" n="447">
          <head xml:id="echoid-head559" xml:space="preserve">EXPERIMENTUM LXXXIV.</head>
          <p>
            <s xml:id="echoid-s12141" xml:space="preserve">Funis inſolatione candeſactus, cujus circumferentia erat 0, 15
              <lb/>
            pollicis, compoſitus ex tribus funiculis in unum contortis, qui
              <lb/>
            ſinguli ex pluribus filamentis etiam contortis conſtabant, fuſtinuit
              <lb/>
            libras 31, ſed a libris 32 fractus fuit.</s>
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