Bernoulli, Daniel, Hydrodynamica, sive De viribus et motibus fluidorum commentarii

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        <div xml:id="echoid-div156" type="section" level="1" n="124">
          <pb o="142" file="0156" n="156" rhead="HYDRODYNAMICÆ"/>
        </div>
        <div xml:id="echoid-div157" type="section" level="1" n="125">
          <head xml:id="echoid-head163" xml:space="preserve">Experimentum 4.</head>
          <p>
            <s xml:id="echoid-s4117" xml:space="preserve">Tubum cylindricum vitreum, qui tres præterpropter lineas habebat
              <lb/>
            in diametro immerſi ad altitudinem 20. </s>
            <s xml:id="echoid-s4118" xml:space="preserve">poll. </s>
            <s xml:id="echoid-s4119" xml:space="preserve">fecique, ut aqua in illo libraretur,
              <lb/>
            elevata prius aquâ ad altitudinem unius fere pollicis. </s>
            <s xml:id="echoid-s4120" xml:space="preserve">Ultra quatuor vel
              <lb/>
            quinque itus reditusque bene notabiles non fecit, nec adeoque omni rigore
              <lb/>
            longitudinem penduli ſimplicis iſochroni examinare potui; </s>
            <s xml:id="echoid-s4121" xml:space="preserve">mihi tamen illa
              <lb/>
            viſa fuit 22. </s>
            <s xml:id="echoid-s4122" xml:space="preserve">aut 23. </s>
            <s xml:id="echoid-s4123" xml:space="preserve">pollicum; </s>
            <s xml:id="echoid-s4124" xml:space="preserve">ex quo intuli adhæſionem aquæ ad latera tu-
              <lb/>
            bi non ſolum diminuere excurſiones, ſed & </s>
            <s xml:id="echoid-s4125" xml:space="preserve">morari pauliſper tempora
              <lb/>
            oſcillationum: </s>
            <s xml:id="echoid-s4126" xml:space="preserve">debuiſſet enim ſecundum § 19. </s>
            <s xml:id="echoid-s4127" xml:space="preserve">eſſe præfata longitudo vi-
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            ginti tantummodo pollicum. </s>
            <s xml:id="echoid-s4128" xml:space="preserve">Idem expertus ſum in oſcillationibus, quas
              <lb/>
            in ſuperiori ſectione pertractavimus.</s>
            <s xml:id="echoid-s4129" xml:space="preserve"/>
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          <p>
            <s xml:id="echoid-s4130" xml:space="preserve">Cæterum obturato vel ad dimidium fere orificio inferiori, obſervare
              <lb/>
            non potui, excurſiones inde fuiſſe diminutas aut oſcillationes retardatas,
              <lb/>
            quod conforme eſt cum iis, quæ §. </s>
            <s xml:id="echoid-s4131" xml:space="preserve">§. </s>
            <s xml:id="echoid-s4132" xml:space="preserve">7. </s>
            <s xml:id="echoid-s4133" xml:space="preserve">& </s>
            <s xml:id="echoid-s4134" xml:space="preserve">18. </s>
            <s xml:id="echoid-s4135" xml:space="preserve">habentur.</s>
            <s xml:id="echoid-s4136" xml:space="preserve"/>
          </p>
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        <div xml:id="echoid-div158" type="section" level="1" n="126">
          <head xml:id="echoid-head164" xml:space="preserve">Experimentum 5.</head>
          <p>
            <s xml:id="echoid-s4137" xml:space="preserve">Tubum conicum longitudine 21. </s>
            <s xml:id="echoid-s4138" xml:space="preserve">poll. </s>
            <s xml:id="echoid-s4139" xml:space="preserve">immerſi aquæ orificio ampliore,
              <lb/>
            ita ut unicus pollex extra aquam emineret: </s>
            <s xml:id="echoid-s4140" xml:space="preserve">fuit autem alterum orificium al-
              <lb/>
            terius paululum plusquam duplum. </s>
            <s xml:id="echoid-s4141" xml:space="preserve">Longitudinem penduli iſochroni cum
              <lb/>
            vibrationibus aquæ in tubo libratæ inveni quindecim poll. </s>
            <s xml:id="echoid-s4142" xml:space="preserve">debuiſſet autem ſe-
              <lb/>
            cundum §. </s>
            <s xml:id="echoid-s4143" xml:space="preserve">23. </s>
            <s xml:id="echoid-s4144" xml:space="preserve">eſſe eadem longitudo paullo minor quatuordecim pollicibus.
              <lb/>
            </s>
            <s xml:id="echoid-s4145" xml:space="preserve">Denique ſimiliter eodem tubo uſus, ſed ſitu inverſo, deprehendi longitudi-
              <lb/>
            nem penduli iſochroni tantillo plusquam duplam ejus, quæ antea fuerat,
              <lb/>
            prouti citato paragrapho indicatur.</s>
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