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

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              <pb o="60" file="0074" n="74" rhead="HYDRODYNAMICÆ."/>
            D F B parvula erat, minorque etiam pars G B, quam in experimento ab aqua
              <lb/>
            relinquebam vacuam: </s>
            <s xml:id="echoid-s1636" xml:space="preserve">ac denique operculum foramine non admodum parvo
              <lb/>
            erat pertuſum. </s>
            <s xml:id="echoid-s1637" xml:space="preserve">Et tunc vidi ſaltum non multum admodum defeciſſe ab altitu-
              <lb/>
            dine {mmδ/nnß} a, quam §. </s>
            <s xml:id="echoid-s1638" xml:space="preserve">28. </s>
            <s xml:id="echoid-s1639" xml:space="preserve">pro hoc negotio dedi, imo memini me præſenti
              <lb/>
            Amico altitudinem ſaltus recte prædixiſſe, poſtquam perpendiſſem, quantum
              <lb/>
            in calculo præter propter impedimentis eſſet dandum.</s>
            <s xml:id="echoid-s1640" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1641" xml:space="preserve">Similem aquæ exploſionem momentaneam eamque à ſimili cauſa oriun-
              <lb/>
            dam facillime obtinebis cum fontibus, qui aquas per fiſtulam pleno orificio eji-
              <lb/>
            ciunt. </s>
            <s xml:id="echoid-s1642" xml:space="preserve">Si enim digitum orificio fiſtulæ ſubito ita apponas, ut pars orificii aper-
              <lb/>
            ta maneat, protinus aquas magno impetu expelli videbis, moxque tenue aquæ
              <lb/>
            filum intra priſtinos velocitatis limites reduci. </s>
            <s xml:id="echoid-s1643" xml:space="preserve">Obſervabis etiam aquas eò ma-
              <lb/>
            jori impetu atque longius projici quo minus digito relinquas foramen, atque
              <lb/>
            pro eodem relicto foramine, jactum inſolitum eò magis protrahi (utut ſemper
              <lb/>
            breviſſimum) fierique oculis ſenſibiliorem, quo longior eſt fiſtula, ita ut in
              <lb/>
            fontibus ſalientibus, ad quos aquæ ex caſtello per longiſſimos canales ferun-
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            tur, ſi canales non eſſent admodum ampli & </s>
            <s xml:id="echoid-s1644" xml:space="preserve">aquæ pleno effluerent orificio,
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            non dubito quin ſic per notabile temporis ſpatium vehemens aquæ jactus pro-
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            trahi poſſet, gradatim ad ſolitam velocitatem rediturus: </s>
            <s xml:id="echoid-s1645" xml:space="preserve">Hæc omnia confor-
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            mia ſunt cum iis, quæ §. </s>
            <s xml:id="echoid-s1646" xml:space="preserve">§. </s>
            <s xml:id="echoid-s1647" xml:space="preserve">28. </s>
            <s xml:id="echoid-s1648" xml:space="preserve">& </s>
            <s xml:id="echoid-s1649" xml:space="preserve">18. </s>
            <s xml:id="echoid-s1650" xml:space="preserve">monita fuerunt.</s>
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            <s xml:id="echoid-s1652" xml:space="preserve">Experimentum hoc me aliquando & </s>
            <s xml:id="echoid-s1653" xml:space="preserve">prima quidem vice feciſſe memi-
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            ni coram V. </s>
            <s xml:id="echoid-s1654" xml:space="preserve">V. </s>
            <s xml:id="echoid-s1655" xml:space="preserve">Cel. </s>
            <s xml:id="echoid-s1656" xml:space="preserve">D. </s>
            <s xml:id="echoid-s1657" xml:space="preserve">D. </s>
            <s xml:id="echoid-s1658" xml:space="preserve">De Maupertuis & </s>
            <s xml:id="echoid-s1659" xml:space="preserve">Clairaut, cum quibus antea in ſer-
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            monem de rebus iſtis aquariis forte delapſus eram. </s>
            <s xml:id="echoid-s1660" xml:space="preserve">Quamvis autem hic nullus
              <lb/>
            ſit aër, qui accuſari poſſit, revera tamen phænomenon iſtud ab eo, quod D.
              <lb/>
            </s>
            <s xml:id="echoid-s1661" xml:space="preserve">de la Hire obſervatum fuit, non differt, & </s>
            <s xml:id="echoid-s1662" xml:space="preserve">utrumque ab eo provenit, quod
              <lb/>
            motus aquæ in canali contentæ, vel ſaltem motus iſtius pars perire non poſſit,
              <lb/>
            fine ullo inde proveniente effectu, quem ipſe enormis aquarum jactus con-
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            ſtituit.</s>
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