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

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        <div xml:id="echoid-div731" type="section" level="1" n="195">
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              <pb o="123" file="0185" n="201" rhead="MATHEMATICA. LIB. I. CAP. XXIII."/>
            poteſtque per totam clavi longitudinem firmiter cum eo
              <lb/>
            connecti cochlea e in ſuperiori parte. </s>
            <s xml:id="echoid-s4958" xml:space="preserve">In parte inferiori tubulis
              <lb/>
            his unci minimi junguntur; </s>
            <s xml:id="echoid-s4959" xml:space="preserve">quos fila tenuiſſima (aut potius
              <lb/>
            chordæ citharæ) i h, i h trajiciunt, quæ globos veluti P& </s>
            <s xml:id="echoid-s4960" xml:space="preserve">Q ſu-
              <lb/>
            ſtinent. </s>
            <s xml:id="echoid-s4961" xml:space="preserve">Fila illa annectuntur paxillis l, l; </s>
            <s xml:id="echoid-s4962" xml:space="preserve">quostorquendo ele-
              <lb/>
            vantur, aut deprimuntur, globi.</s>
            <s xml:id="echoid-s4963" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s4964" xml:space="preserve">Clavus, quo globus quicunque ſuſtinetur, ita in ſcif-
              <lb/>
            ſura st ſiſtitur, ut illius centri a linea AD, quæ tabulam
              <lb/>
            in duas partes æquales verticaliter dividit, diſtantia æqualis ſit
              <lb/>
            ſemidiametro globi; </s>
            <s xml:id="echoid-s4965" xml:space="preserve">illudque pro omnibus globis fit, ductis
              <lb/>
            notis in tabulæ ſuperficie.</s>
            <s xml:id="echoid-s4966" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s4967" xml:space="preserve">Tubulus cum unco, quo globus ſuſpenditur, in ea parte
              <lb/>
            clavi firmatur, ut fili a tabulæ ſuperficie diſtantia paululum
              <lb/>
            excedat ſemidiametrum globi; </s>
            <s xml:id="echoid-s4968" xml:space="preserve">& </s>
            <s xml:id="echoid-s4969" xml:space="preserve">dantur in clavis diviſio-
              <lb/>
            nes, quibus, pro magnitudine globi, ſitus tubuli determi-
              <lb/>
            natur.</s>
            <s xml:id="echoid-s4970" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s4971" xml:space="preserve">Quando duo globi adhibentur, linea AD hos ſeparat;
              <lb/>
            </s>
            <s xml:id="echoid-s4972" xml:space="preserve">& </s>
            <s xml:id="echoid-s4973" xml:space="preserve">in hoc caſu, ut & </s>
            <s xml:id="echoid-s4974" xml:space="preserve">quando plures adhibentur, ſi diverſæ
              <lb/>
            fuerint magnitudinis, globus maximus minoris diſtantiam a
              <lb/>
            tabula determinat, & </s>
            <s xml:id="echoid-s4975" xml:space="preserve">tubuli reſpondentibus clavorum divi-
              <lb/>
            ſionibus admoventur, ut globorum omnium centra æque di-
              <lb/>
            ſtent a tabula. </s>
            <s xml:id="echoid-s4976" xml:space="preserve">Centra illa paxillorum l converſione ad ean-
              <lb/>
            dem altitudinem reducuntur; </s>
            <s xml:id="echoid-s4977" xml:space="preserve">quod in omnibus Experimen-
              <lb/>
            tis obſervandum.</s>
            <s xml:id="echoid-s4978" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s4979" xml:space="preserve">Regulæ duæ æneæ EG, EG, ad horizontem parallelæ diſ-
              <lb/>
            ponuntur; </s>
            <s xml:id="echoid-s4980" xml:space="preserve">ſuperficies tabulæ ad illas recipiendas paululum
              <lb/>
            excavatur, ut illarum ſuperficies cum tabulæ ſuperficie con-
              <lb/>
            gruat A poſteriori utriuſque regulæ parte datur in tabula
              <lb/>
            ſciſſura, longitudinis circiter quinque pollicum, per quam
              <lb/>
            tranſit cochlea regulæ cohærens, & </s>
            <s xml:id="echoid-s4981" xml:space="preserve">cujus ope regula retine-
              <lb/>
            tur, & </s>
            <s xml:id="echoid-s4982" xml:space="preserve">transfertur per longitudinem ſciſſuræ. </s>
            <s xml:id="echoid-s4983" xml:space="preserve">In Experi-
              <lb/>
            mentis diſtantia extremitatis G, utriuſque regulæ, a linea
              <lb/>
            AD, æqualis eſt ſemidiametro globi, ad eandem partem
              <lb/>
            hujus lineæ ſuſpenſi, quod ut fiat diſtantiæ pro ſingulis glo-
              <lb/>
            bis notis indicandæ ſunt.</s>
            <s xml:id="echoid-s4984" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s4985" xml:space="preserve">Diviſiones regularum tales ſunt, ut denotent angulos </s>
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