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

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          <pb o="192" file="0272" n="297" rhead="PHYSICES ELEMENTA"/>
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        <div xml:id="echoid-div1044" type="section" level="1" n="254">
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            <emph style="sc">Machina</emph>
          </head>
          <head xml:id="echoid-head362" style="it" xml:space="preserve">Qua Experimenta de Elaſticitate inſtituuntur.</head>
          <p>
            <s xml:id="echoid-s7530" xml:space="preserve">Machinæ hujus pars præcipua eſt tabula lignea verti-
              <lb/>
              <note position="left" xlink:label="note-0272-01" xlink:href="note-0272-01a" xml:space="preserve">673.</note>
            calis, longitudinis circiter trium pedum, altitudinis unius
              <lb/>
              <note position="left" xlink:label="note-0272-02" xlink:href="note-0272-02a" xml:space="preserve">
                <emph style="sc">TA. XXVI.</emph>
                <lb/>
              fig. 2.</note>
            pedis.</s>
            <s xml:id="echoid-s7531" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s7532" xml:space="preserve">Regulæ ligneæ mn, mn, tabulæ cohærent, & </s>
            <s xml:id="echoid-s7533" xml:space="preserve">iis ſuſti-
              <lb/>
            nentur duo Priſmata H, H, ad formam cunei, quæ juxta illas
              <lb/>
            regulas moventur, & </s>
            <s xml:id="echoid-s7534" xml:space="preserve">ubique ope cochlearum tranſeuntium
              <lb/>
            per ſcisſuras in tabula firmantur.</s>
            <s xml:id="echoid-s7535" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s7536" xml:space="preserve">Dantur inter A & </s>
            <s xml:id="echoid-s7537" xml:space="preserve">B diviſiones æquales, a medio tabulæ
              <lb/>
            partem utramque verſus, ad ſitum Priſmatum determinan-
              <lb/>
            dum.</s>
            <s xml:id="echoid-s7538" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s7539" xml:space="preserve">In O datur ſulcus, quo Machinæ a latere connectitur tro-
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            chlea T, cujus figura datur in F, fig. </s>
            <s xml:id="echoid-s7540" xml:space="preserve">2. </s>
            <s xml:id="echoid-s7541" xml:space="preserve">Tab. </s>
            <s xml:id="echoid-s7542" xml:space="preserve">X.</s>
            <s xml:id="echoid-s7543" xml:space="preserve"/>
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          <p>
            <s xml:id="echoid-s7544" xml:space="preserve">Chorda, cum qua Experimenta fiunt, ab una parte an-
              <lb/>
            nectitur extremitati regulæ m n, & </s>
            <s xml:id="echoid-s7545" xml:space="preserve">ad aliam partem circumit
              <lb/>
            trochleam T, pondere P illam tendente, & </s>
            <s xml:id="echoid-s7546" xml:space="preserve">Priſmatibus H.
              <lb/>
            </s>
            <s xml:id="echoid-s7547" xml:space="preserve">H, in punctis, quæ a medio Machinæ æque diſtant, illam
              <lb/>
            ſuſtinentibus.</s>
            <s xml:id="echoid-s7548" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s7549" xml:space="preserve">Medio Tabulæ inſeritur lamina ænea d e, in partes mini-
              <lb/>
            mas diviſa, juxta quas diviſiones movetur lamina ænea fg,
              <lb/>
            quæ chordæ appenditur, & </s>
            <s xml:id="echoid-s7550" xml:space="preserve">in qua foramen datur per quod
              <lb/>
            hæc immittitur; </s>
            <s xml:id="echoid-s7551" xml:space="preserve">huic laminæ conjuncta eſt lanx L, quæ unâ
              <lb/>
            cum lamina f g exacte eſt ponderis unius unciæ.</s>
            <s xml:id="echoid-s7552" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s7553" xml:space="preserve">Longitudo chordæ in Experimentis æqualis eſt di-
              <lb/>
            ſtantiæ inter apices Priſmatum H, H; </s>
            <s xml:id="echoid-s7554" xml:space="preserve">nam in inflexionibus
              <lb/>
            minimis, circa quas ſolas Experimenta fiunt; </s>
            <s xml:id="echoid-s7555" xml:space="preserve">ponderibus in
              <lb/>
            C appenſis, chorda ſuper Priſmatibus non movetur, pondus
              <lb/>
            P non elevatur, & </s>
            <s xml:id="echoid-s7556" xml:space="preserve">pars, ut AB, ſola inflexionibus iſtis
              <lb/>
            producitur.</s>
            <s xml:id="echoid-s7557" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s7558" xml:space="preserve">In chordæ inflexionibus ſagittæ menſurantur diviſioni-
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            bus laminæ e d, nam extremitas g laminæ g c æqualiter ſemper
              <lb/>
            cum puncto C, in chordæ inflexione, deſcendit.</s>
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        <div xml:id="echoid-div1046" type="section" level="1" n="255">
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            <emph style="sc">Experimentum. i.</emph>
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            <s xml:id="echoid-s7560" xml:space="preserve">Sit pondus P duarum librarum, & </s>
            <s xml:id="echoid-s7561" xml:space="preserve">inflectatur chorda in
              <lb/>
              <note position="left" xlink:label="note-0272-03" xlink:href="note-0272-03a" xml:space="preserve">674.</note>
            C pondere unius unciæ, id eſt, pondere lancis & </s>
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