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

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            perficiebus inferioribus rotarum minorum orbibus con-
              <lb/>
            junctarum.</s>
            <s xml:id="echoid-s3591" xml:space="preserve"/>
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          <p>
            <s xml:id="echoid-s3592" xml:space="preserve">Sit Orbis B ſolus circumvolvendus; </s>
            <s xml:id="echoid-s3593" xml:space="preserve">Machina Fig. </s>
            <s xml:id="echoid-s3594" xml:space="preserve">5. </s>
            <s xml:id="echoid-s3595" xml:space="preserve">pedi C
              <lb/>
            connectitur, ope duarum cochlearum tranſeuntium per fora-
              <lb/>
            mina ut x, in plano inferiori Machinæ, quæ diſponitur ut illius
              <lb/>
            ſuperficies ſuperior, erga rotam minorem Orbi adhærentem, fi-
              <lb/>
            tum habeat, qui in Fig. </s>
            <s xml:id="echoid-s3596" xml:space="preserve">6. </s>
            <s xml:id="echoid-s3597" xml:space="preserve">videtur, in qua b rotam illam minorem
              <lb/>
            deſignat: </s>
            <s xml:id="echoid-s3598" xml:space="preserve">funis circumit rotam majorem Q, & </s>
            <s xml:id="echoid-s3599" xml:space="preserve">ab inſeriori hu-
              <lb/>
            jus parte tendit a d verſus v, circumponitur rotæ b, & </s>
            <s xml:id="echoid-s3600" xml:space="preserve">juxta
              <lb/>
            t trochleam, c verſus, ad partem ſuperiorem rotæ Q pervenit.</s>
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            <s xml:id="echoid-s3602" xml:space="preserve">In Fig. </s>
            <s xml:id="echoid-s3603" xml:space="preserve">7. </s>
            <s xml:id="echoid-s3604" xml:space="preserve">ſitus Machinæ Fig. </s>
            <s xml:id="echoid-s3605" xml:space="preserve">5. </s>
            <s xml:id="echoid-s3606" xml:space="preserve">repræ ſentatur, quando
              <lb/>
            ambo Orbes ſimul circumrotandi ſunt; </s>
            <s xml:id="echoid-s3607" xml:space="preserve">ſunis diſpoſitio ex
              <lb/>
            inſpectione figuræ liquet, ab v tendit verſus d, ad rotæ ma-
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            joris Q partem inferiorem.</s>
            <s xml:id="echoid-s3608" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3609" xml:space="preserve">In multis Experimentis ulterius requiruntur pyxides oblon-
              <lb/>
            gæ P, P, quæ orbibus imponuntur, & </s>
            <s xml:id="echoid-s3610" xml:space="preserve">cochleis ibi firmantur;
              <lb/>
            </s>
            <s xml:id="echoid-s3611" xml:space="preserve">in unaquaque centrum Orbis cum medio pyxidis congruit, & </s>
            <s xml:id="echoid-s3612" xml:space="preserve">
              <lb/>
            ibi datur foramen æquale foramini g f (Fig. </s>
            <s xml:id="echoid-s3613" xml:space="preserve">2.) </s>
            <s xml:id="echoid-s3614" xml:space="preserve">& </s>
            <s xml:id="echoid-s3615" xml:space="preserve">huic reſpon-
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            dens, cui inſeritur cylindrus ligneus N (Fig. </s>
            <s xml:id="echoid-s3616" xml:space="preserve">2.)</s>
            <s xml:id="echoid-s3617" xml:space="preserve">, ut videtur in L, L: </s>
            <s xml:id="echoid-s3618" xml:space="preserve">
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            hunc trajicit, & </s>
            <s xml:id="echoid-s3619" xml:space="preserve">in eo hæret tubulus vitreus, diametri circiter
              <lb/>
            quartæ partis unius pollicis, cujus extremitates lampadis flam-
              <lb/>
            mâ fuſæ anguſtum in medio foramen habent; </s>
            <s xml:id="echoid-s3620" xml:space="preserve">ita ut per tu-
              <lb/>
            bum filum, aut funis tenuis, ſine attritu ſenſibili, moveatur.</s>
            <s xml:id="echoid-s3621" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3622" xml:space="preserve">In pyxide, ad exiguam ab L diſtantiam, lamina lignea
              <lb/>
            ſuſpenditur v, quæ cum pyxidis lateribus angulos efficit re-
              <lb/>
            ctos, & </s>
            <s xml:id="echoid-s3623" xml:space="preserve">in V ſeparatim repræſentatur; </s>
            <s xml:id="echoid-s3624" xml:space="preserve">circa latus ſuperius
              <lb/>
            liberrimè volubilis eſt; </s>
            <s xml:id="echoid-s3625" xml:space="preserve">in inferiori parte ſciſſura datur,
              <lb/>
            ad cujus latus paxillus P laminæ inſeritur, infra quem
              <lb/>
            foramen datur, per quod filum trajicit, quod cum paxillo
              <lb/>
            cohæret.</s>
            <s xml:id="echoid-s3626" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3627" xml:space="preserve">Cum latere pyxidis lamina lignea elaſtica s conjungitur
              <lb/>
            ope cochlearum q, q; </s>
            <s xml:id="echoid-s3628" xml:space="preserve">ſeparatim in ſitu inverſo videri po-
              <lb/>
            teſt in S; </s>
            <s xml:id="echoid-s3629" xml:space="preserve">in k cum hac cohæret ſphæræ ſegmentum ex li-
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            gno duriori, aut ebore. </s>
            <s xml:id="echoid-s3630" xml:space="preserve">Cochlearum q, q, figura datur in
              <lb/>
            Q. </s>
            <s xml:id="echoid-s3631" xml:space="preserve">Pars oppoſita pyxidis in partes æquales, recedendo a
              <lb/>
            centro, in fundo dividitur.</s>
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