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

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        <div xml:id="echoid-div2469" type="section" level="1" n="615">
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            <s xml:id="echoid-s16461" xml:space="preserve">
              <pb o="(118)" file="0640" n="707" rhead="PHYSICES ELEMENTA"/>
            ſtantiâ à Sole, & </s>
            <s xml:id="echoid-s16462" xml:space="preserve">ex auctâ celeritate Telluris: </s>
            <s xml:id="echoid-s16463" xml:space="preserve">quæ ambæ
              <lb/>
              <note symbol="*" position="left" xlink:label="note-0640-01" xlink:href="note-0640-01a" xml:space="preserve">944.</note>
            cauſæ ſemper concurrunt ; </s>
            <s xml:id="echoid-s16464" xml:space="preserve">quare motus apparentis
              <note position="left" xlink:label="note-0640-02" xlink:href="note-0640-02a" xml:space="preserve">797.</note>
            inœqualitas ſenſibilis eſt. </s>
            <s xml:id="echoid-s16465" xml:space="preserve">In integr â Telluris revolutione, e-
              <lb/>
              <note position="left" xlink:label="note-0640-03" xlink:href="note-0640-03a" xml:space="preserve">998.</note>
            tiam integrum circulum Sol percurrere videtur.</s>
            <s xml:id="echoid-s16466" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div2471" type="section" level="1" n="616">
          <head xml:id="echoid-head803" xml:space="preserve">
            <emph style="sc">Definitio</emph>
          1.</head>
          <p>
            <s xml:id="echoid-s16467" xml:space="preserve">Via hæc apparens Solis, Linea Ecliptica vocatur. </s>
            <s xml:id="echoid-s16468" xml:space="preserve">Eſt ſe-
              <lb/>
              <note position="left" xlink:label="note-0640-04" xlink:href="note-0640-04a" xml:space="preserve">999.</note>
            ctio ſphæræ ſtellarum fixarum cum plano Eclipticæ, ad hanc
              <lb/>
            ſphæram uſque continuato.</s>
            <s xml:id="echoid-s16469" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s16470" xml:space="preserve">Dividitur hæc via in duodecim partes æquales, quæ ſin-
              <lb/>
            gulæ continent 30. </s>
            <s xml:id="echoid-s16471" xml:space="preserve">gr.</s>
            <s xml:id="echoid-s16472" xml:space="preserve">; partes hæ vocantur Signa, & </s>
            <s xml:id="echoid-s16473" xml:space="preserve">no-
              <lb/>
            minibus dantur; </s>
            <s xml:id="echoid-s16474" xml:space="preserve">Aries ♈, Taurus ♉, Gemini II, Cancer ♋,
              <lb/>
            Leo ♌, Virgo ♍, Libra ♎, Scorpius ♏, Sagittarius ♐,
              <lb/>
            Capricornus
              <unsure/>
            , Aquarius ♒, Piſces
              <unsure/>
            . </s>
            <s xml:id="echoid-s16475" xml:space="preserve">Unde hæ partes
              <lb/>
            nomina mutuatæ ſint, ubi de ſtellis fixis acturi ſumus vide-
              <lb/>
            bimus.</s>
            <s xml:id="echoid-s16476" xml:space="preserve"/>
          </p>
          <p style="it">
            <s xml:id="echoid-s16477" xml:space="preserve">Diutius in percurrendis ſex ſignis primis bœret Sol, quàm
              <lb/>
              <note position="left" xlink:label="note-0640-05" xlink:href="note-0640-05a" xml:space="preserve">1000.</note>
            in ſex poſterioribus, daturque differentia novem dierum.</s>
            <s xml:id="echoid-s16478" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s16479" xml:space="preserve">Licèt circulus nullum habeat principium aut finem, ubi
              <lb/>
              <note position="left" xlink:label="note-0640-06" xlink:href="note-0640-06a" xml:space="preserve">1001.</note>
            tamen, in hoc, puncta varia determinanda ſunt, quoddam
              <lb/>
            punctum pro principio habendum eſt; </s>
            <s xml:id="echoid-s16480" xml:space="preserve">hoc, in lineâ Eclipti-
              <lb/>
            câ, eſt primum punctum Arietis; </s>
            <s xml:id="echoid-s16481" xml:space="preserve">quomodo determinetur, in
              <lb/>
            ſequentibus videbimus. </s>
            <s xml:id="echoid-s16482" xml:space="preserve">Non eſt ſixum inter ſtellas fixas; </s>
            <s xml:id="echoid-s16483" xml:space="preserve">id-
              <lb/>
            circo orbitæ Planetarum, quæ adeò parum mutantur, ut pro
              <lb/>
              <note position="left" xlink:label="note-0640-07" xlink:href="note-0640-07a" xml:space="preserve">1002.</note>
            immutabilibus haberi poſſint , non eundem reſpectu
              <note symbol="*" position="left" xlink:label="note-0640-08" xlink:href="note-0640-08a" xml:space="preserve">929.</note>
            puncti ſitum ſervant.</s>
            <s xml:id="echoid-s16484" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div2475" type="section" level="1" n="617">
          <head xml:id="echoid-head804" xml:space="preserve">
            <emph style="sc">Definitio</emph>
          2.</head>
          <p style="it">
            <s xml:id="echoid-s16485" xml:space="preserve">Diſtantia Solis à primo puncto Arietis, in conſequentiâ,
              <lb/>
              <note position="left" xlink:label="note-0640-09" xlink:href="note-0640-09a" xml:space="preserve">1003.</note>
            menſurata, dicitur Solis Longitudo.</s>
            <s xml:id="echoid-s16486" xml:space="preserve"/>
          </p>
          <p style="it">
            <s xml:id="echoid-s16487" xml:space="preserve">Longitudines cœterorum corporum cœleſtium, eodem modo in
              <lb/>
              <note position="left" xlink:label="note-0640-10" xlink:href="note-0640-10a" xml:space="preserve">1004.</note>
            Eclipticâ menſurantur; </s>
            <s xml:id="echoid-s16488" xml:space="preserve">Ad banc referuntur, ſi circulus ma-
              <lb/>
              <note position="left" xlink:label="note-0640-11" xlink:href="note-0640-11a" xml:space="preserve">1005.</note>
            jor per corpus concipiatur perpendicularis ad Eclipticam;
              <lb/>
            </s>
            <s xml:id="echoid-s16489" xml:space="preserve">punctum enim, in quo hæc ab illo circulo ſecatur, determi-
              <lb/>
            nat corporis longitudinem.</s>
            <s xml:id="echoid-s16490" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div2478" type="section" level="1" n="618">
          <head xml:id="echoid-head805" xml:space="preserve">
            <emph style="sc">Definitio</emph>
          3.</head>
          <p>
            <s xml:id="echoid-s16491" xml:space="preserve">Diſtantia corporis cœieſtis à lineâ Eclipticâ, vocatur il-
              <lb/>
              <note position="left" xlink:label="note-0640-12" xlink:href="note-0640-12a" xml:space="preserve">1006.</note>
            lius Latitudo. </s>
            <s xml:id="echoid-s16492" xml:space="preserve">Eſt arcus circuli majoris, ad Eclipticam per-
              <lb/>
            pendicularis, inter corpus & </s>
            <s xml:id="echoid-s16493" xml:space="preserve">Eclipticam interceptus.</s>
            <s xml:id="echoid-s16494" xml:space="preserve"/>
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