Gravesande, Willem Jacob 's, Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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            <s xml:id="echoid-s16428" xml:space="preserve">
              <pb o="(117)" file="0639" n="706" rhead="MATHEMATICA LIB. IV. CAP. III."/>
            cunque, eandem Terricolœ imaginantur ſphæram, ad quam
              <lb/>
            corpora cœleſtia referunt; </s>
            <s xml:id="echoid-s16429" xml:space="preserve">& </s>
            <s xml:id="echoid-s16430" xml:space="preserve">quam, in ſequentibus, nomina-
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            bimus ſphœram ſtellarum fixarum.</s>
            <s xml:id="echoid-s16431" xml:space="preserve"/>
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            <s xml:id="echoid-s16432" xml:space="preserve">Hiſce poſitis, ſi per Tellurem, & </s>
            <s xml:id="echoid-s16433" xml:space="preserve">corpus, lineam concipia-
              <lb/>
              <note position="right" xlink:label="note-0639-01" xlink:href="note-0639-01a" xml:space="preserve">991.</note>
            mus, quœ ultra corpus continuata ſphœram memoratam ſecat,
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            habemus punctum, ad quod corpus memoratum refertur, & </s>
            <s xml:id="echoid-s16434" xml:space="preserve">
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            quod eſt locus apparens corporis.</s>
            <s xml:id="echoid-s16435" xml:space="preserve"/>
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            <s xml:id="echoid-s16436" xml:space="preserve">Dum corpus, aut Tellus, aut ambo, moventur, agitatur
              <lb/>
            hæc linea, & </s>
            <s xml:id="echoid-s16437" xml:space="preserve">motus apparens eſt linea, quam inter ſtellas
              <lb/>
              <note position="right" xlink:label="note-0639-02" xlink:href="note-0639-02a" xml:space="preserve">992.</note>
            fixas deſcribit extremitas lineœ memoratæ, tranſeuntis per
              <lb/>
            Tellurem & </s>
            <s xml:id="echoid-s16438" xml:space="preserve">corpus, cujus motus apparens obſervatur.</s>
            <s xml:id="echoid-s16439" xml:space="preserve"/>
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            <s xml:id="echoid-s16440" xml:space="preserve">Idcirco eœdem apparentiœ ex tranſlatâ Tellure ſequuntur,
              <lb/>
              <note position="right" xlink:label="note-0639-03" xlink:href="note-0639-03a" xml:space="preserve">993.</note>
            quàm ex tranſlato corpore, & </s>
            <s xml:id="echoid-s16441" xml:space="preserve">eædem etiam ex motu amborum
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            deduci poßunt.</s>
            <s xml:id="echoid-s16442" xml:space="preserve"/>
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            <s xml:id="echoid-s16443" xml:space="preserve">Si autem Corpus & </s>
            <s xml:id="echoid-s16444" xml:space="preserve">Tellus ita moveantur, ut linea, quœ
              <lb/>
              <note position="right" xlink:label="note-0639-04" xlink:href="note-0639-04a" xml:space="preserve">994.</note>
            per bœc corpora tranſit, motu parallelo feratur, corpus in-
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            ter ſtellas fixas quieſcere videbitur; </s>
            <s xml:id="echoid-s16445" xml:space="preserve">quia ſpatium, in hoc
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            caſu, ab extremitate lineæ inter ſtellas percurſum, non
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            poteſt ſuperare ſpatium à Tellure percurſum; </s>
            <s xml:id="echoid-s16446" xml:space="preserve">linea autem
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            æqualis toti ſpatio, quod à Tellure poteſt percurri, ad diſtan-
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            tiam ſtellarum fixarum remota, nobis ſenſibilis non eſt.</s>
            <s xml:id="echoid-s16447" xml:space="preserve"/>
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            <s xml:id="echoid-s16448" xml:space="preserve">Ex motu Telluris circa axem etiam datur motus apparens,
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              <note position="right" xlink:label="note-0639-05" xlink:href="note-0639-05a" xml:space="preserve">995.</note>
            qui ſuo tempore, ex fundamentis in hoc capite poſitis, fa-
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            cilè deducetur.</s>
            <s xml:id="echoid-s16449" xml:space="preserve"/>
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            <s xml:id="echoid-s16450" xml:space="preserve">Motum apparentem à relativo differre, & </s>
            <s xml:id="echoid-s16451" xml:space="preserve">ex motu ſpe-
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            ctatoris variari, navigantes quotidie experiuntur.</s>
            <s xml:id="echoid-s16452" xml:space="preserve"/>
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        <div xml:id="echoid-div2469" type="section" level="1" n="615">
          <head xml:id="echoid-head801" xml:space="preserve">CAPUT III.</head>
          <head xml:id="echoid-head802" style="it" xml:space="preserve">De Phœnomenis Solis ex motu Telluris in orbitâ.</head>
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            <s xml:id="echoid-s16453" xml:space="preserve">SIt Sol in S; </s>
            <s xml:id="echoid-s16454" xml:space="preserve">Tellus in orbitâ ſuâ in T; </s>
            <s xml:id="echoid-s16455" xml:space="preserve">rs ſphæra ſtella-
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              <note position="right" xlink:label="note-0639-06" xlink:href="note-0639-06a" xml:space="preserve">
                <emph style="sc">TAB. XXI</emph>
              .
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              fig. 1.</note>
            rum fixarum; </s>
            <s xml:id="echoid-s16456" xml:space="preserve">locus apparens Solis eſt s . </s>
            <s xml:id="echoid-s16457" xml:space="preserve">Dum
              <note position="right" xlink:label="note-0639-07" xlink:href="note-0639-07a" xml:space="preserve">996.</note>
            in orbit â transfertur à Tin t, Sol moveri videtur, & </s>
            <s xml:id="echoid-s16458" xml:space="preserve">percur-
              <lb/>
              <note symbol="*" position="right" xlink:label="note-0639-08" xlink:href="note-0639-08a" xml:space="preserve">991.</note>
            rere arcum s r , qui menſurat angulum r S s,
              <note symbol="*" position="right" xlink:label="note-0639-09" xlink:href="note-0639-09a" xml:space="preserve">992.</note>
            angulo T S t; </s>
            <s xml:id="echoid-s16459" xml:space="preserve">ita, ut celeritas motus apparentis Solis pen-
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            deat, à celeritate motus angularis Telluris, reſpectu centri
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            Solis; </s>
            <s xml:id="echoid-s16460" xml:space="preserve">qui motus ex duplici cauſâ creſcit; </s>
            <s xml:id="echoid-s16461" xml:space="preserve">ex imminutâ </s>
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