Gravesande, Willem Jacob 's, Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1

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        <div xml:id="echoid-div1221" type="section" level="1" n="309">
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            perculo, quo pars tubi anterior obtegitur, & </s>
            <s xml:id="echoid-s8559" xml:space="preserve">quod cum
              <lb/>
            hoc ope cochleæ jungitur: </s>
            <s xml:id="echoid-s8560" xml:space="preserve">duo tubi ſimiles aptantur in E
              <lb/>
            circa fundum vaſis AB, & </s>
            <s xml:id="echoid-s8561" xml:space="preserve">in G, hicque ſupra F elevatur
              <lb/>
            quantum ille infra F deprimitur.</s>
            <s xml:id="echoid-s8562" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8563" xml:space="preserve">Circa fundum etiam ejuſdem machinæ firmatur epiſto-
              <lb/>
            mium N, cochleâ inſtructum ut ipſi tubus jungatur.</s>
            <s xml:id="echoid-s8564" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div1223" type="section" level="1" n="310">
          <head xml:id="echoid-head434" xml:space="preserve">
            <emph style="sc">Experimentum</emph>
          1.</head>
          <p>
            <s xml:id="echoid-s8565" xml:space="preserve">Vas AB aqua impletur ita, ut altitudo ſuperficiei ſu-
              <lb/>
              <note position="left" xlink:label="note-0320-01" xlink:href="note-0320-01a" xml:space="preserve">798.</note>
            premæ aquæ ſupra fundum vaſis CD foramine in F in duas
              <lb/>
            partes æquales dividatur, quæ ſingulæ in noſtra machina
              <lb/>
            ſunt 15 {3/4}. </s>
            <s xml:id="echoid-s8566" xml:space="preserve">pol. </s>
            <s xml:id="echoid-s8567" xml:space="preserve">Aqua ex hoc foramine ad M proſilit, ita
              <lb/>
            ut diſtantia horizontalis puncti M à foramine ſit 29 {1/2}. </s>
            <s xml:id="echoid-s8568" xml:space="preserve">poll. </s>
            <s xml:id="echoid-s8569" xml:space="preserve">duo-
              <lb/>
            bus poll. </s>
            <s xml:id="echoid-s8570" xml:space="preserve">deficiens ab altitudine aquæ ſupra fundum va-
              <lb/>
            ſis CD; </s>
            <s xml:id="echoid-s8571" xml:space="preserve">ſi ad diſtantiam 31 {1/2} poll. </s>
            <s xml:id="echoid-s8572" xml:space="preserve">pertingeret, percurret
              <lb/>
            aqua, motu æquabili, celeritate cum qua exit, in tempore
              <lb/>
            in quo corpus cadere poteſt ab F ad fundum arcæ CD,
              <lb/>
            fpatium, duplum hujus altitudinis , & </s>
            <s xml:id="echoid-s8573" xml:space="preserve">ideo agitaretur
              <note symbol="*" position="left" xlink:label="note-0320-02" xlink:href="note-0320-02a" xml:space="preserve">327.</note>
            leritate quam corpus ab hac altitudine cadendo poteſt ac-
              <lb/>
            quirere ; </s>
            <s xml:id="echoid-s8574" xml:space="preserve">hæc autem altitudo æqualis eſt altitudini
              <note symbol="*" position="left" xlink:label="note-0320-03" xlink:href="note-0320-03a" xml:space="preserve">257.</note>
            ficiei aquæ ſupra foramen. </s>
            <s xml:id="echoid-s8575" xml:space="preserve">Cum vero tantum pertingat ad
              <lb/>
            diſtantiam 29 {1/2} poll. </s>
            <s xml:id="echoid-s8576" xml:space="preserve">deficit vera aquæ velocitas a velocita-
              <lb/>
            te memorata decima ſexta circiter parte.</s>
            <s xml:id="echoid-s8577" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8578" xml:space="preserve">Sepoſitis retardationibus, quadrata velocitatum, quibus
              <lb/>
              <note position="left" xlink:label="note-0320-04" xlink:href="note-0320-04a" xml:space="preserve">799.</note>
            fluidum ex variis foraminibus exit, ſunt inter ſe ut altitu-
              <lb/>
            dines fluidi ſupra foramina . </s>
            <s xml:id="echoid-s8579" xml:space="preserve">Experimentis etiam
              <note symbol="*" position="left" xlink:label="note-0320-05" xlink:href="note-0320-05a" xml:space="preserve">796. 255.</note>
            retardationes parum admodum hanc proportionem turba-
              <lb/>
            re quamdiu altitudines non excedunt pedes 30. </s>
            <s xml:id="echoid-s8580" xml:space="preserve">aut 35.
              <lb/>
            </s>
            <s xml:id="echoid-s8581" xml:space="preserve">In minoribus altitudinibus proportionem hanc ſequenti Ex-
              <lb/>
            perimento ante oculos ponimus.</s>
            <s xml:id="echoid-s8582" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div1226" type="section" level="1" n="311">
          <head xml:id="echoid-head435" xml:space="preserve">
            <emph style="sc">Experimentum</emph>
          2.</head>
          <p>
            <s xml:id="echoid-s8583" xml:space="preserve">Uſu hîc venit Machina ſuperius memorata ; </s>
            <s xml:id="echoid-s8584" xml:space="preserve">& </s>
            <s xml:id="echoid-s8585" xml:space="preserve">
              <note position="left" xlink:label="note-0320-06" xlink:href="note-0320-06a" xml:space="preserve">800.</note>
            exp. </s>
            <s xml:id="echoid-s8586" xml:space="preserve">hoc notamus, diſtantias, ad quas proſilit aqua in fundo
              <lb/>
              <note position="left" xlink:label="note-0320-07" xlink:href="note-0320-07a" xml:space="preserve">TAB. XXXIII.
                <lb/>
              fig. 2.</note>
              <note symbol="*" position="left" xlink:label="note-0320-08" xlink:href="note-0320-08a" xml:space="preserve">797.</note>
            arcæ CD, dum horizontaliter exit ex foramine ut E, po-
              <lb/>
            fitis diverſis ſuperficiei aquæ altitudinibus, eſſe ſpatia hori-
              <lb/>
            zontaliter motu æquabili percurſa, in tempore in quo cor-
              <lb/>
            pus cadendo poteſt percurrere IL æqualem altitudini </s>
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