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

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          <pb o="209" file="0293" n="320" rhead="MATHEMATICA. LIB. II. CAP. II."/>
        </div>
        <div xml:id="echoid-div1119" type="section" level="1" n="278">
          <head xml:id="echoid-head392" xml:space="preserve">
            <emph style="sc">Experimentum</emph>
          5.</head>
          <p>
            <s xml:id="echoid-s8008" xml:space="preserve">Inmedio ſuperficiei ſuperioris ſuſtentaculi B, datur cy-
              <lb/>
              <note position="right" xlink:label="note-0293-01" xlink:href="note-0293-01a" xml:space="preserve">728.</note>
            lindrus diametri circiter duorum pollicum, cui imponitur
              <lb/>
              <note position="right" xlink:label="note-0293-02" xlink:href="note-0293-02a" xml:space="preserve">
                <emph style="sc">TAB. XXIX</emph>
              .
                <lb/>
              fig. 1.</note>
            fundus mobilis cylindri ſæpius memorati A , ita ut
              <note symbol="*" position="right" xlink:label="note-0293-03" xlink:href="note-0293-03a" xml:space="preserve">722.</note>
            nente fundo ipſe cylindrus moveri poſſit; </s>
            <s xml:id="echoid-s8009" xml:space="preserve">hic operculo ſuo
              <lb/>
            obtegitur, & </s>
            <s xml:id="echoid-s8010" xml:space="preserve">cum eo conjungitur tubus D longitudinis tri-
              <lb/>
            um pedum cum ſemiſſe, cui in ſuperiori extremitate additur
              <lb/>
            infundibulum cujus diameter eſt trium aut quatuor poll.
              <lb/>
            </s>
            <s xml:id="echoid-s8011" xml:space="preserve">Infunditur aqua, qua, manente fundo, machina elevatur; </s>
            <s xml:id="echoid-s8012" xml:space="preserve">
              <lb/>
            imponuntur operculo pondera P, P, P, quæ ſimul valent
              <lb/>
            libras novem, hæc, cum pondere totius machinæ, ab aqua in
              <lb/>
            tubo ſuſtinentur; </s>
            <s xml:id="echoid-s8013" xml:space="preserve">pondus vero machinæ cum tubis & </s>
            <s xml:id="echoid-s8014" xml:space="preserve">infun-
              <lb/>
            dibulo excedit quatuor libras cum ſemiſſe.</s>
            <s xml:id="echoid-s8015" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8016" xml:space="preserve">Vis, quæ in operculum agit, valet pondus columnæ aqueæ,
              <lb/>
            cujus baſis eſt operculum, demto foramine cui reſpondet tu-
              <lb/>
            bus, & </s>
            <s xml:id="echoid-s8017" xml:space="preserve">cujus altitudo eſt, aquæ elevatio in tubo ſupra ſu-
              <lb/>
            perficiem interiorem operculi ; </s>
            <s xml:id="echoid-s8018" xml:space="preserve">quod cum hoc
              <note symbol="*" position="right" xlink:label="note-0293-04" xlink:href="note-0293-04a" xml:space="preserve">723</note>
            to congruit.</s>
            <s xml:id="echoid-s8019" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8020" xml:space="preserve">Manente tubo ſi machina major detur, actio in operculum
              <lb/>
            in eadem ratione cum operculo creſcet, ita ut minima aquæ
              <lb/>
            quantitate pondus maximum ſuſtineatur, ac etiam elevetur.</s>
            <s xml:id="echoid-s8021" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div1122" type="section" level="1" n="279">
          <head xml:id="echoid-head393" xml:space="preserve">
            <emph style="sc">Follis hydrostaticus</emph>
          .</head>
          <p>
            <s xml:id="echoid-s8022" xml:space="preserve">Duo orbes lignei AB, AB, diametri quindecim pollicum,
              <lb/>
              <note position="right" xlink:label="note-0293-05" xlink:href="note-0293-05a" xml:space="preserve">729.</note>
            corio circumdantur & </s>
            <s xml:id="echoid-s8023" xml:space="preserve">junguntur ita, ut formetur vas cylin-
              <lb/>
              <note position="right" xlink:label="note-0293-06" xlink:href="note-0293-06a" xml:space="preserve">
                <emph style="sc">TAB. XXIX</emph>
              .
                <lb/>
              fig. 2.</note>
            dricum folli aliquomodo ſimile, quod aquam continere poteſt.</s>
            <s xml:id="echoid-s8024" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8025" xml:space="preserve">In orbe ſuperiori datur foramen in l, cui reſpondet cy-
              <lb/>
            lindrus æneus, cum orbe cohærens, & </s>
            <s xml:id="echoid-s8026" xml:space="preserve">cochlea circumdatus,
              <lb/>
            quo tubus D, ejusdem longitudinis cum tubo in præceden-
              <lb/>
            ti Experimento, machinæ jungitur.</s>
            <s xml:id="echoid-s8027" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div1124" type="section" level="1" n="280">
          <head xml:id="echoid-head394" xml:space="preserve">
            <emph style="sc">Experimentum</emph>
          6.</head>
          <p>
            <s xml:id="echoid-s8028" xml:space="preserve">Aqua machinæ per tubum infundatur, & </s>
            <s xml:id="echoid-s8029" xml:space="preserve">aqua in tubo
              <lb/>
              <note position="right" xlink:label="note-0293-07" xlink:href="note-0293-07a" xml:space="preserve">730.</note>
            ſuſtinebit pondera P,P,P,P,P,P, ſimul excedentia ducentas
              <lb/>
            & </s>
            <s xml:id="echoid-s8030" xml:space="preserve">quinquagintâ libras. </s>
            <s xml:id="echoid-s8031" xml:space="preserve">Pondera hæc infundendo aquam in
              <lb/>
            tubum etiam elevari poterunt.</s>
            <s xml:id="echoid-s8032" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8033" xml:space="preserve">Hæc omnia quantumvis paradoxa ex natura fluiditatis ſe-
              <lb/>
              <note position="right" xlink:label="note-0293-08" xlink:href="note-0293-08a" xml:space="preserve">731.</note>
            quuntur; </s>
            <s xml:id="echoid-s8034" xml:space="preserve">gutta quæcunque quæ quieſcit, omnes </s>
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