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

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        <div xml:id="echoid-div403" type="section" level="1" n="139">
          <p>
            <s xml:id="echoid-s2556" xml:space="preserve">
              <pb o="59" file="0107" n="116" rhead="MATHEMATICA. LIS. I. CAP. XVI."/>
            obtinet, quando Angulus
              <emph style="sc">Ea</emph>
            D eſt obtuſus.</s>
            <s xml:id="echoid-s2557" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div407" type="section" level="1" n="140">
          <head xml:id="echoid-head201" xml:space="preserve">
            <emph style="sc">Lex</emph>
          III.</head>
          <p style="it">
            <s xml:id="echoid-s2558" xml:space="preserve">Actioni contraria ſemper & </s>
            <s xml:id="echoid-s2559" xml:space="preserve">æqualis eſt reactio; </s>
            <s xml:id="echoid-s2560" xml:space="preserve">ſive cor-
              <lb/>
              <note position="right" xlink:label="note-0107-01" xlink:href="note-0107-01a" xml:space="preserve">247.</note>
            porum duorum actiones in ſe mutuo ſemper ſunt æquales, & </s>
            <s xml:id="echoid-s2561" xml:space="preserve">
              <lb/>
            in partes contrarias diriguntur.</s>
            <s xml:id="echoid-s2562" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2563" xml:space="preserve">Quomodocunque corpus in aliud agat, ipſum reactionem
              <lb/>
            æqualem & </s>
            <s xml:id="echoid-s2564" xml:space="preserve">contrariam pati ſemper videmus. </s>
            <s xml:id="echoid-s2565" xml:space="preserve">Digito lapi-
              <lb/>
            dem premo, premitur æqualiter digitus a lapide. </s>
            <s xml:id="echoid-s2566" xml:space="preserve">Currume-
              <lb/>
            quus protrahit, à curru æqualiter retrotrahitur; </s>
            <s xml:id="echoid-s2567" xml:space="preserve">lora enim
              <lb/>
            æqualiter verſus utramque partem diſtenduntur.</s>
            <s xml:id="echoid-s2568" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2569" xml:space="preserve">Corpus in aliud impingitur, quæcumque ſit impreſſio,
              <lb/>
            utrumque æqualem patitur; </s>
            <s xml:id="echoid-s2570" xml:space="preserve">impreſſiones vero contrariæ ſunt:
              <lb/>
            </s>
            <s xml:id="echoid-s2571" xml:space="preserve">illud pleniſſime confirmatur Experimentis circa colliſio-
              <lb/>
            nes corporum.</s>
            <s xml:id="echoid-s2572" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2573" xml:space="preserve">Magnes ferrum ad ſe trahit, trahitur æqualiter a ferro.</s>
            <s xml:id="echoid-s2574" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div409" type="section" level="1" n="141">
          <head xml:id="echoid-head202" xml:space="preserve">
            <emph style="sc">Experimentum</emph>
          .</head>
          <p>
            <s xml:id="echoid-s2575" xml:space="preserve">Suſpenditur magnes M, ita ut facillime moveri poſſit, & </s>
            <s xml:id="echoid-s2576" xml:space="preserve">
              <lb/>
              <note position="right" xlink:label="note-0107-02" xlink:href="note-0107-02a" xml:space="preserve">248.</note>
            ferro admoto ad certam diſtantiam, accedit magnes ad fer-
              <lb/>
              <note position="right" xlink:label="note-0107-03" xlink:href="note-0107-03a" xml:space="preserve">TAB. X.
                <lb/>
              fig. 2.</note>
            rum; </s>
            <s xml:id="echoid-s2577" xml:space="preserve">& </s>
            <s xml:id="echoid-s2578" xml:space="preserve">hoc retrahendo, antequam magnes ad hoc perve-
              <lb/>
            nerit, magnes ferrum ſequitur; </s>
            <s xml:id="echoid-s2579" xml:space="preserve">eodem omnino modo, ac
              <lb/>
            ferrum ad magnetem accedit, & </s>
            <s xml:id="echoid-s2580" xml:space="preserve">hunc ſequitur, quando il-
              <lb/>
            lud ſuſpenditur, & </s>
            <s xml:id="echoid-s2581" xml:space="preserve">magnes admovetur.</s>
            <s xml:id="echoid-s2582" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2583" xml:space="preserve">Sedet quis in cymba, cymbam aliam æqualem, & </s>
            <s xml:id="echoid-s2584" xml:space="preserve">æqua-
              <lb/>
            liter onuſtam, fune trahit; </s>
            <s xml:id="echoid-s2585" xml:space="preserve">ambæ cymbæ æqualiter moven-
              <lb/>
            tur, & </s>
            <s xml:id="echoid-s2586" xml:space="preserve">in medio diſtantiæ primæ concurrunt: </s>
            <s xml:id="echoid-s2587" xml:space="preserve">ſi una cym-
              <lb/>
            ba altera ſit major, aut magis onuſta, pro diverſis quanti-
              <lb/>
            tatibus materiæ in ſingulis celeritates erunt diverſæ.</s>
            <s xml:id="echoid-s2588" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2589" xml:space="preserve">Et hæc eadem lex generaliter in omnibus corporum a-
              <lb/>
            ctionibus in alia copora locum habet.</s>
            <s xml:id="echoid-s2590" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div411" type="section" level="1" n="142">
          <head xml:id="echoid-head203" xml:space="preserve">CAPUT XVII.</head>
          <head xml:id="echoid-head204" style="it" xml:space="preserve">De Acceleratione & Retardatione Gravium.</head>
          <head xml:id="echoid-head205" xml:space="preserve">
            <emph style="sc">Definitio</emph>
          1.</head>
          <p>
            <s xml:id="echoid-s2591" xml:space="preserve">MOtus acceleratus, eſt cujus celeritas omnibus momentis
              <lb/>
              <note position="right" xlink:label="note-0107-04" xlink:href="note-0107-04a" xml:space="preserve">249.</note>
            major fit.</s>
            <s xml:id="echoid-s2592" xml:space="preserve"/>
          </p>
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