Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica

Table of Notes

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          <p>
            <s xml:id="echoid-s6343" xml:space="preserve">
              <pb o="569" file="0301" n="316" rhead="SYSTEMA SATURNIUM."/>
            que linea brachiorum ad aperturæ centrum, immotum inde
              <lb/>
            tubum ſiſtimus, quo ita manente, mox totam tubi capaci-
              <lb/>
            tatem A B percurrere Saturnus conſpicitur, motu qui cælo
              <lb/>
            tribuitur abreptus, atque exire ad partem oppoſitam B, quo
              <lb/>
            tendebat brachiorum linea. </s>
            <s xml:id="echoid-s6344" xml:space="preserve">Quoniam ergo Saturnus, hoc
              <lb/>
            motu ſuo, circulum æquatori parallelum percurrit, cujus
              <lb/>
            circuli pars eſt linea A B, manifeſto patet brachiorum li-
              <lb/>
            neam æquatori quoque parallelam extendi. </s>
            <s xml:id="echoid-s6345" xml:space="preserve">Hujus vero rei
              <lb/>
            periculum facere licet quoties Saturni obſervandi facultas
              <lb/>
            datur, neque alia certiori ratione directionem anſarum in-
              <lb/>
            veſtigari poſſe credimus. </s>
            <s xml:id="echoid-s6346" xml:space="preserve">Non defuere tamen qui diverſi-
              <lb/>
            mode idem examen inſtituerunt, quorum obſervationes ſen-
              <lb/>
            tentiam hanc noſtram comprobant. </s>
            <s xml:id="echoid-s6347" xml:space="preserve">Nam Galilæus quidem
              <lb/>
            ipſe, qui primus phænomeni hujus indicium fecit, non
              <lb/>
            omnino eclipticæ parallelam lineam, in qua Saturni comi-
              <lb/>
            tes poſiti eſſent, ſibi viſam ſcribit, ſed evidenter ab ea de-
              <lb/>
            flectere; </s>
            <s xml:id="echoid-s6348" xml:space="preserve">& </s>
            <s xml:id="echoid-s6349" xml:space="preserve">fortaſſe, inquit, æquatori parallela eſt.</s>
            <s xml:id="echoid-s6350" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6351" xml:space="preserve">Poſt hunc vero quicunque rem examinaverunt, omnes
              <lb/>
            hanc ejus conjecturam nequaquam aberraſſe oſtendunt, & </s>
            <s xml:id="echoid-s6352" xml:space="preserve">
              <lb/>
            in his Aſtronomi inſignes Gaſſendus, Bullialdus & </s>
            <s xml:id="echoid-s6353" xml:space="preserve">Riccio-
              <lb/>
            lus; </s>
            <s xml:id="echoid-s6354" xml:space="preserve">quorum hic ſtellarum fixarum ope (alia tamen metho-
              <lb/>
            do quam qua modo nos uſi ſumus) non ſemel illum anſa-
              <lb/>
            rum cum æquatore paralleliſmum liquido ſibi compertum
              <lb/>
            demonſtrat.</s>
            <s xml:id="echoid-s6355" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6356" xml:space="preserve">Clariſſimus tamen Hevelius, ſuis obſervationibus confi-
              <lb/>
              <note position="right" xlink:label="note-0301-01" xlink:href="note-0301-01a" xml:space="preserve">Hevelii de
                <lb/>
              inclinatione
                <lb/>
              anſarum
                <lb/>
              contraria
                <lb/>
              opinio.</note>
            ſus, quæ cujuſmodi fuerint non indicat, diverſam hîc opi-
              <lb/>
            nionem tuetur, contenditque excentrico Saturni parallelam
              <lb/>
            eſſe brachiorum inclinationem, ut proinde eclipticæ quoque
              <lb/>
            ferè conveniat, non amplius unqnam quam 2{1/2} gr. </s>
            <s xml:id="echoid-s6357" xml:space="preserve">defle-
              <lb/>
            ctens: </s>
            <s xml:id="echoid-s6358" xml:space="preserve">& </s>
            <s xml:id="echoid-s6359" xml:space="preserve">hoc quidem cum circa nodos interſectionis Satur-
              <lb/>
            nus verſatur. </s>
            <s xml:id="echoid-s6360" xml:space="preserve">Quo fiet ut cum in Libræ & </s>
            <s xml:id="echoid-s6361" xml:space="preserve">Arietis gr. </s>
            <s xml:id="echoid-s6362" xml:space="preserve">20,
              <lb/>
            ubi limites ſtatuuntur, poſitus fuerit, prorſus eclipticam ſe-
              <lb/>
            quatur brachiorum diſpoſitio. </s>
            <s xml:id="echoid-s6363" xml:space="preserve">At circa hæc loca maximam
              <lb/>
            omnium inclinationem noſtræ & </s>
            <s xml:id="echoid-s6364" xml:space="preserve">aliorum obſervationes pro-
              <lb/>
            dunt, nam noſtræ quidem, Saturno prope libræ ſignum at-
              <lb/>
            que in ipſo ſigno verſante, habitæ ſunt; </s>
            <s xml:id="echoid-s6365" xml:space="preserve">aliorum vero </s>
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