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

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              <pb o="10" file="0024" n="24" rhead="HYDRODYNAMICÆ"/>
            ſionem ex motu peti, prius ex circumſtantiis definiendo; </s>
            <s xml:id="echoid-s264" xml:space="preserve">nec crediderim ali-
              <lb/>
            am viam tuto iniri poſſe præter eam, quam ego ſecutus ſum: </s>
            <s xml:id="echoid-s265" xml:space="preserve">conſideravi au-
              <lb/>
            tem canalem, per quem aquæ fluunt eo in loco eoque temporis puncto, quæ
              <lb/>
            quæſtioni conveniunt, amputatum; </s>
            <s xml:id="echoid-s266" xml:space="preserve">poſteaque per regulas noſtras præmiſſas
              <lb/>
            accelerationem indagavi particulæ aquæ imminentis, proximeque effluxuræ. </s>
            <s xml:id="echoid-s267" xml:space="preserve">Ex
              <lb/>
            iſta acceleratione colligere licebat compresſionem illius particulæ aqueæ, quæ
              <lb/>
            compresſio per naturam fluidorum æqualis eſt presſioni in latera canalis. </s>
            <s xml:id="echoid-s268" xml:space="preserve">Co-
              <lb/>
            gnita hac presſione apparet, quid fieri debeat, ſi canalis eodem in loco per-
              <lb/>
            foratus fuerit, tubulusque foramini reſpondeat; </s>
            <s xml:id="echoid-s269" xml:space="preserve">fore nempe, ut aqua in eo
              <lb/>
            aſcendat ad certum uſque gradum ſtagnans in tubulo, & </s>
            <s xml:id="echoid-s270" xml:space="preserve">ab aqua inferius per
              <lb/>
            canalem præterfluente ſuſtenta, ſic, ut hic æquilibrium adſit inter aquas flu-
              <lb/>
            entes & </s>
            <s xml:id="echoid-s271" xml:space="preserve">ſtagnantes: </s>
            <s xml:id="echoid-s272" xml:space="preserve">hoc vero nomine Theoriam iſtam hydraulico-ſtaticam com-
              <lb/>
            mode vocari poſſe exiſtimavi. </s>
            <s xml:id="echoid-s273" xml:space="preserve">Notari porro meretur, ipſam hanc Theoriam
              <lb/>
            fundamentum rurſus eſſe & </s>
            <s xml:id="echoid-s274" xml:space="preserve">fontem aliorum motuum antehac incognitorum.
              <lb/>
            </s>
            <s xml:id="echoid-s275" xml:space="preserve">Theoremata, quæ exponuntur, non nova ſolum, ſed & </s>
            <s xml:id="echoid-s276" xml:space="preserve">pleraque inexpectata
              <lb/>
            ſunt, quorum omnium veritatem nec ipſe plane mihi perſuadere potui, pri-
              <lb/>
            uſquam experimenta inſtituiſſem, quæ mihi omnem ſcrupulum demebant. </s>
            <s xml:id="echoid-s277" xml:space="preserve">
              <lb/>
            Habent autem inſignem uſum, quandoquidem iis innititur vera presſionis
              <lb/>
            aquarum, per aquæductus ſeu rivos fluentium, æſtimatio, hincque deducendæ
              <lb/>
            tuborum firmitates requiſitæ. </s>
            <s xml:id="echoid-s278" xml:space="preserve">Inde quoque pendent accuratæ menſuræ aqua-
              <lb/>
            rum per modulos, rivo lateraliter inſertos, erogatarum: </s>
            <s xml:id="echoid-s279" xml:space="preserve">in Phyſiologia re-
              <lb/>
            ctius jam intelligentur, quæ pertinent ad motum humorum in corpore animali,
              <lb/>
            & </s>
            <s xml:id="echoid-s280" xml:space="preserve">quæ ſunt alia.</s>
            <s xml:id="echoid-s281" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s282" xml:space="preserve">§. </s>
            <s xml:id="echoid-s283" xml:space="preserve">16. </s>
            <s xml:id="echoid-s284" xml:space="preserve">Denique progredior ad alios quosdam modos, quibus aqua ni-
              <lb/>
            ſum facere poteſt, explicandos: </s>
            <s xml:id="echoid-s285" xml:space="preserve">ita nempe aqua, dum per foramen effluit, in
              <lb/>
            contrarium premit vas non aliter, atque globus retropellit tormentum, ex
              <lb/>
            quo exploditur: </s>
            <s xml:id="echoid-s286" xml:space="preserve">iſtius retropulſionis plures proprietates deteguntur novæ,
              <lb/>
            quæ presſionum naturam egregie illuſtrant, earumque leges, quas affectant, ge-
              <lb/>
            nerales in mechanicis rem iſtam ſerio meditantibus indicabunt. </s>
            <s xml:id="echoid-s287" xml:space="preserve">Has diſqui-
              <lb/>
            ſitiones feci, quia mihi viſum eſt, poſſe ea novæ aliquando navigationi ſine
              <lb/>
            remorum, aut venti adminiculo excogitandæ occaſionem præbere; </s>
            <s xml:id="echoid-s288" xml:space="preserve">qua de
              <lb/>
            re ſuo loco pauca quædam afferam, etſi non ignoro, omnium hujusmodi re-
              <lb/>
            rum primordia per ſe pleriſque videri ridicula. </s>
            <s xml:id="echoid-s289" xml:space="preserve">Tandem etiam de vi aqua-
              <lb/>
            rum ex impulſu hincque nato renixu, quam corpora in fluidis mota offen-
              <lb/>
            dunt, Theoremata quædam adjiciuntur.</s>
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