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

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        <div xml:id="echoid-div1556" type="section" level="1" n="370">
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            <s xml:id="echoid-s10886" xml:space="preserve">
              <pb o="299" file="0403" n="440" rhead="MATHEMATICA. LIB. II. CAP. XIII."/>
            tur ; </s>
            <s xml:id="echoid-s10887" xml:space="preserve">ut æquilibrium detur, lanci oppoſitæ imponitur
              <note symbol="*" position="right" xlink:label="note-0403-01" xlink:href="note-0403-01a" xml:space="preserve">1056.</note>
            dus, æquale ponderi tubi, & </s>
            <s xml:id="echoid-s10888" xml:space="preserve">mercurii in hoc contenti.</s>
            <s xml:id="echoid-s10889" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10890" xml:space="preserve">Mercurius in tubo libram gravare nequit; </s>
            <s xml:id="echoid-s10891" xml:space="preserve">illius enim a-
              <lb/>
            ctio in latera tubi, horizontalis eſt: </s>
            <s xml:id="echoid-s10892" xml:space="preserve">ſed aër agit in ſupe-
              <lb/>
            riorem partem tubi, & </s>
            <s xml:id="echoid-s10893" xml:space="preserve">columna quæ a tubo ſuſtinetur æ-
              <lb/>
            quiponderat cum columna mercurii in tubo contenta. </s>
            <s xml:id="echoid-s10894" xml:space="preserve">Si
              <lb/>
            ſublato mercurio aër intromittatur, ſolus tubus libram gra-
              <lb/>
            vat; </s>
            <s xml:id="echoid-s10895" xml:space="preserve">quod probat, actionem aëris, in ſuperficiem inferiorem
              <lb/>
            partis ſuperioris tubi, deſtruere actionem in ſuperficiem ex-
              <lb/>
            teriorem ejuſdem partis tubi, aëremque ſurſum & </s>
            <s xml:id="echoid-s10896" xml:space="preserve">deorſum
              <lb/>
            æqualiter premere.</s>
            <s xml:id="echoid-s10897" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10898" xml:space="preserve">Hoc etiam Experimento, quæ de aëris gravitate dicta
              <lb/>
            funt, confirmantur.</s>
            <s xml:id="echoid-s10899" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div1558" type="section" level="1" n="371">
          <head xml:id="echoid-head509" xml:space="preserve">CAPUT XIV.
            <lb/>
          De Aëris Elaſticitate.</head>
          <p>
            <s xml:id="echoid-s10900" xml:space="preserve">CEterorum fluidorum proprietates aërem habere vidi-
              <lb/>
              <note position="right" xlink:label="note-0403-02" xlink:href="note-0403-02a" xml:space="preserve">1063.</note>
            mus; </s>
            <s xml:id="echoid-s10901" xml:space="preserve">præter has peculiarem habet, poteſtque locum
              <lb/>
            majorem aut minorem occupare, prout vi diverſa compri-
              <lb/>
            mitur; </s>
            <s xml:id="echoid-s10902" xml:space="preserve">& </s>
            <s xml:id="echoid-s10903" xml:space="preserve">ſtatim ac vis hæc minuitur, ſeſe expandit. </s>
            <s xml:id="echoid-s10904" xml:space="preserve">Pro-
              <lb/>
            pter analogiam hujus effectus cum corporum elaſticitate,
              <lb/>
            hæc aëris proprietas hujus Elaſticitas dicitur.</s>
            <s xml:id="echoid-s10905" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10906" xml:space="preserve">Aërem poſſe comprimi Experimento jam memorato con-
              <lb/>
              <note position="right" xlink:label="note-0403-03" xlink:href="note-0403-03a" xml:space="preserve">1064.</note>
            ſtat . </s>
            <s xml:id="echoid-s10907" xml:space="preserve">Et illum poſſe dilatari ſequenti probatur.</s>
            <s xml:id="echoid-s10908" xml:space="preserve"/>
          </p>
          <note symbol="*" position="right" xml:space="preserve">17.</note>
        </div>
        <div xml:id="echoid-div1561" type="section" level="1" n="372">
          <head xml:id="echoid-head510" xml:space="preserve">
            <emph style="sc">Experimentum.</emph>
          1.</head>
          <p>
            <s xml:id="echoid-s10909" xml:space="preserve">Detur tubus AB clauſus in A, inſundatur mercurius
              <lb/>
              <note position="right" xlink:label="note-0403-05" xlink:href="note-0403-05a" xml:space="preserve">1065.</note>
            ita, ut in tubo aër relinquatur, qui in ſtatu aëris exterioris
              <lb/>
              <note position="right" xlink:label="note-0403-06" xlink:href="note-0403-06a" xml:space="preserve">TAB. XXXVIII.
                <lb/>
              fig. 4.</note>
            occupet ſpatium Al; </s>
            <s xml:id="echoid-s10910" xml:space="preserve">ſi tubi extremitas B mercurio im-
              <lb/>
            mergatur, deſcendet mercurius ad g, ibique hærebit. </s>
            <s xml:id="echoid-s10911" xml:space="preserve">Al-
              <lb/>
            titudo ig multum diſſert ab altitudine mercurii in Expe-
              <lb/>
            rimento 1. </s>
            <s xml:id="echoid-s10912" xml:space="preserve">capitis præcedentis.</s>
            <s xml:id="echoid-s10913" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10914" xml:space="preserve">Hoc ex pondere aëris in tubo non oritur; </s>
            <s xml:id="echoid-s10915" xml:space="preserve">ni-
              <lb/>
            mium exiguum eſt hocce pondus, ut ſenſibilem </s>
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