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

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            beret? </s>
            <s xml:id="echoid-s8271" xml:space="preserve">Sed nullam deprehendere potui, adſcendente Aqua juxta vi-
              <lb/>
            trum parvum æque alte, ut videbatur, quam juxta magnum.</s>
            <s xml:id="echoid-s8272" xml:space="preserve"/>
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        <div xml:id="echoid-div236" type="section" level="1" n="236">
          <head xml:id="echoid-head259" xml:space="preserve">EXPERIMENTUM II.</head>
          <p>
            <s xml:id="echoid-s8273" xml:space="preserve">Tab. </s>
            <s xml:id="echoid-s8274" xml:space="preserve">13: </s>
            <s xml:id="echoid-s8275" xml:space="preserve">fig. </s>
            <s xml:id="echoid-s8276" xml:space="preserve">17. </s>
            <s xml:id="echoid-s8277" xml:space="preserve">& </s>
            <s xml:id="echoid-s8278" xml:space="preserve">18. </s>
            <s xml:id="echoid-s8279" xml:space="preserve">Si idem vitrum A B, immittatur Aquæ
              <lb/>
            oblique, cujus ſuperficies ſit C H, hæc ab eâ parte, quâ angulus
              <lb/>
            obtuſus formatur a vitro & </s>
            <s xml:id="echoid-s8280" xml:space="preserve">Aqua ipſa, parum adſcendit, atque eo
              <lb/>
            minus, quo angulus fuerit obtuſior, curvam deſcribendo, quam
              <lb/>
            repræſentat D E: </s>
            <s xml:id="echoid-s8281" xml:space="preserve">adſcendit autem Aqua alte, quâ parte angulus
              <lb/>
            acutus formatur, atque eo altius, quo angulus eſt acutior, forman-
              <lb/>
            do curvam F G.</s>
            <s xml:id="echoid-s8282" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8283" xml:space="preserve">Primâ fronte videretur Aqua altius adſcenſura ſupra planum in-
              <lb/>
            clinatum, quam ſupra perpendiculare ad horizontem quod etiam fieret
              <lb/>
            vi attrahente puncti O in libella poſiti, ſed quia ſuperficies vitri BO
              <lb/>
            propius accedit ad ſuperficiem Aquæ C D O, quo vitrum A B plus
              <lb/>
            inclinatum eſt, hinc eo fortius trahit Aquam C D O ad ſe, quare
              <lb/>
            attractio ſupremæ partis O E A ſuperatur ab attractione partis O B,
              <lb/>
            unde eo minus adſcendit D E, quo O B propius acceſſit ad ſuper-
              <lb/>
            ficiem Aquæ C D, donec tandem vis D E fere penitus ſit ſublata,
              <lb/>
            & </s>
            <s xml:id="echoid-s8284" xml:space="preserve">C D E vix differat â rectâ horizontali: </s>
            <s xml:id="echoid-s8285" xml:space="preserve">hinc patet quare F C ſit
              <lb/>
            eo altius, quo vitrum magis inclinatum eſt ad ſuperficiem Aquæ
              <lb/>
            G H, nam eo propius Aquæ G H poſitum, majoribus viribus
              <lb/>
            ipſam attrahendo, altius quoque elevat: </s>
            <s xml:id="echoid-s8286" xml:space="preserve">curva autem eſt F G ſu-
              <lb/>
            perficies attractæ Aquæ, ob cauſam in Exper. </s>
            <s xml:id="echoid-s8287" xml:space="preserve">1. </s>
            <s xml:id="echoid-s8288" xml:space="preserve">allatam; </s>
            <s xml:id="echoid-s8289" xml:space="preserve">mu-
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            tatur autem curva perpetuo, mutata vitri inclinatione ad
              <lb/>
            Aquam.</s>
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          </p>
        </div>
        <div xml:id="echoid-div237" type="section" level="1" n="237">
          <head xml:id="echoid-head260" xml:space="preserve">EXPERIMENTUM III.</head>
          <p>
            <s xml:id="echoid-s8291" xml:space="preserve">Tab. </s>
            <s xml:id="echoid-s8292" xml:space="preserve">13. </s>
            <s xml:id="echoid-s8293" xml:space="preserve">fig. </s>
            <s xml:id="echoid-s8294" xml:space="preserve">19. </s>
            <s xml:id="echoid-s8295" xml:space="preserve">Si ſpeculum A B, Aquæ immiſſum, perpen-
              <lb/>
            diculariter attollatur, atque lente & </s>
            <s xml:id="echoid-s8296" xml:space="preserve">pedetentim extrahatur ex A-
              <lb/>
            quâ; </s>
            <s xml:id="echoid-s8297" xml:space="preserve">hæc ſuperficiei inferioris marginis vitri B adhærebit, atque
              <lb/>
            perget utrimque formare curvam E D, F G, extremis D, G eo
              <lb/>
            propius ad ſe accedentibus, quo vitrum B altius ex Aquâ ſublatum
              <lb/>
            eſt: </s>
            <s xml:id="echoid-s8298" xml:space="preserve">quod ſi admodum craſſum fuerit, accedunt puncta E F </s>
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