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

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        <div xml:id="echoid-div1109" type="section" level="1" n="273">
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            <s xml:id="echoid-s7956" xml:space="preserve">
              <pb o="207" file="0291" n="318" rhead="MATHEMATICA. LIB. II. CAP. II."/>
            lo diſtat duobus pollicibus; </s>
            <s xml:id="echoid-s7957" xml:space="preserve">lanci, brachio oppoſito ſuſpen-
              <lb/>
            ſæ, pondus imponitur, ut detur æquilibrium cum ponde-
              <lb/>
            re ſolius fundi & </s>
            <s xml:id="echoid-s7958" xml:space="preserve">catenæ; </s>
            <s xml:id="echoid-s7959" xml:space="preserve">quantum ponderis ad hoc requi-
              <lb/>
            ritur antea explorandum. </s>
            <s xml:id="echoid-s7960" xml:space="preserve">Cum tubo D, cujus longitudo eſt
              <lb/>
            pollicum triginta duorum in ſuperiori parte, ope cochleæ in-
              <lb/>
            fundibulum conjungitur cylindricum cujus diameter eſt cir-
              <lb/>
            citer novem pollicum, & </s>
            <s xml:id="echoid-s7961" xml:space="preserve">in hac figura non exhibetur.</s>
            <s xml:id="echoid-s7962" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s7963" xml:space="preserve">Jugo libræ horizontaliter diſpoſito infundatur aqua tubo
              <lb/>
            D, ut ad altitudinem duorum pollicum in infundibulo per-
              <lb/>
            tingat: </s>
            <s xml:id="echoid-s7964" xml:space="preserve">pondere duodecim librarum lanci impoſito æquili-
              <lb/>
            brium datur; </s>
            <s xml:id="echoid-s7965" xml:space="preserve">diminuto, aut aucto, pondere, adſcendit, aut
              <lb/>
            deſcendit, fundus. </s>
            <s xml:id="echoid-s7966" xml:space="preserve">Quantitate tamen non admodum exi-
              <lb/>
            gua, exempli gratia unius libræ, augendum aut minuendum
              <lb/>
            eſt pondus, propter attritum fundi, ſæpe major differentia
              <lb/>
            deſideratur, quod ab attritu pendet.</s>
            <s xml:id="echoid-s7967" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s7968" xml:space="preserve">Altitudo ſupremæ ſuperficiei aquæ ſupra fundum, in hoc
              <lb/>
            Experimento, eſt trium pedum, columnæ aqueæ, cujus
              <lb/>
            hæc eſt altitudo, & </s>
            <s xml:id="echoid-s7969" xml:space="preserve">quæ baſin æqualem fundo cylindri ha-
              <lb/>
            bet, pondus eſt duodecim librarum, & </s>
            <s xml:id="echoid-s7970" xml:space="preserve">tantum etiam valet
              <lb/>
            preſſio aquæ in fundum, licet exigua tantum aquæ copia
              <lb/>
            in fundum premat.</s>
            <s xml:id="echoid-s7971" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s7972" xml:space="preserve">Cum de ſolo motu fundi agatur, machina firmanda eſt
              <lb/>
            ne tota elevetur, quod fit impoſitis ponderibus, qualia re-
              <lb/>
            præſentantur in P, P, fig. </s>
            <s xml:id="echoid-s7973" xml:space="preserve">1. </s>
            <s xml:id="echoid-s7974" xml:space="preserve">Tab. </s>
            <s xml:id="echoid-s7975" xml:space="preserve">XXIX.</s>
            <s xml:id="echoid-s7976" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div1111" type="section" level="1" n="274">
          <head xml:id="echoid-head387" xml:space="preserve">
            <emph style="sc">Experimentum</emph>
          2.</head>
          <p>
            <s xml:id="echoid-s7977" xml:space="preserve">Sublato operculo cum tubo, cylindrus A conjungatur
              <lb/>
              <note position="right" xlink:label="note-0291-01" xlink:href="note-0291-01a" xml:space="preserve">724.</note>
            cum cono truncato inverſo DE, cui in inferiori parte co-
              <lb/>
              <note position="right" xlink:label="note-0291-02" xlink:href="note-0291-02a" xml:space="preserve">
                <emph style="sc">TAB. XXVIII</emph>
              .
                <lb/>
              fig. 2.</note>
            hæret annulus cochleam continens; </s>
            <s xml:id="echoid-s7978" xml:space="preserve">aqua huic machinæ in-
              <lb/>
            funditur ad eandem altitudinem ſupra fundum ac in præ-
              <lb/>
            cedenti Experimento; </s>
            <s xml:id="echoid-s7979" xml:space="preserve">Experimentum de cætero eodem
              <lb/>
            modo peragitur, & </s>
            <s xml:id="echoid-s7980" xml:space="preserve">eodem modo procedit; </s>
            <s xml:id="echoid-s7981" xml:space="preserve">preſſioque,
              <lb/>
            ſervata aquæ altitudine, ex mutato vaſe & </s>
            <s xml:id="echoid-s7982" xml:space="preserve">aquæ quantitate;
              <lb/>
            </s>
            <s xml:id="echoid-s7983" xml:space="preserve">non mutatur.</s>
            <s xml:id="echoid-s7984" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div1113" type="section" level="1" n="275">
          <head xml:id="echoid-head388" xml:space="preserve">
            <emph style="sc">Experimentum</emph>
          3.</head>
          <p>
            <s xml:id="echoid-s7985" xml:space="preserve">Vas cylindricum A libræ ſuſpenditur, pro parte hocce
              <lb/>
              <note position="right" xlink:label="note-0291-03" xlink:href="note-0291-03a" xml:space="preserve">725.</note>
            repletur cylindro ligneo D e, quod cum ligno B c, quomo-
              <lb/>
              <note position="right" xlink:label="note-0291-04" xlink:href="note-0291-04a" xml:space="preserve">
                <emph style="sc">TAB. XXVIII</emph>
              .
                <lb/>
              fig. 3.</note>
            </s>
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