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

Table of figures

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[21] Fig. 5.B E D A C G F
[Figure 22]
[23] Pag. 340.TAB. XXXVII.Fig. 1.C G H F E DH A X Q Y T N V B G
[24] Fig. 3.γ A F D X B P N V E Q C
[25] Fig. 2.K C Δ R Θ Z O Γ D I
[26] Fig. 4.A B D C Π Φ N E S P F
[27] Fig. 2.M E Ψ Λ Φ S Ξ Π Ρ Σ Ω F L
[28] Fig. 5.K B Δ E Z A C R O D Θ Γ I
[Figure 29]
[Figure 30]
[Figure 31]
[32] Pag. 366.TAB.XXXVIII.Fig. 1.B E F G A D C
[33] Fig. 2.E F G B A C
[34] Fig. 3.B E D C A F
[35] Fig. 4.D G E F I B K M N H L A C
[36] Fig. 5.HD A B C
[37] Fig. 6.E D C B F G A
[38] Fig. 8.D E G B A F C
[39] Fig. 7.N G H I KE L M A P C O F B D
[40] Pag. 376.TAB. XXXIXFig. 1.E K C B A L H G D F
[41] Fig. 2.D B G H C E F
[42] Fig. 4.E C G A F B D
[43] Fig. 3.E C D F G H I
[44] Fig. 5.B F R C P L M O
[45] Fig. 6.Y S H E K B C G F R A L D N P M Z X V T
[46] Fig. 7.G F D M L E A K C B H
[47] Pag. 386.TAB. XL.Fig. 2.K B H F G E A I D L C
[48] Fig. 1.L K E D H C A G B
[49] Fig. 3.B Q N L M F G S H K A D C P
[50] Fig. 4.B G R A C D E H F
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            <s xml:id="echoid-s6533" xml:space="preserve">
              <pb o="576" file="0310" n="326" rhead="CHRIST. HUGENII"/>
            ro quærendum eſt quæ cauſa, præter eam quam jam attuli-
              <lb/>
            mus, anſas quandoque cerni prohibeat: </s>
            <s xml:id="echoid-s6534" xml:space="preserve">eſt autem quæ ſe-
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            quitur manifeſtiſſima.</s>
            <s xml:id="echoid-s6535" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6536" xml:space="preserve">Frequenter nimirum evenire conſtat Saturno circa locos
              <lb/>
            modo dictos B vel D commorante, ut tum hujuſce tum So-
              <lb/>
            lis reſpectu ita poſiti ſimus, ut ſi produci planum annuli in-
              <lb/>
            telligatur, id inter nos ac Solem tranſiturum ſit: </s>
            <s xml:id="echoid-s6537" xml:space="preserve">velut in
              <lb/>
            ſchemate, cum Saturnus prope D conſiſtit, nos au-
              <lb/>
            tem cum Tellure in E. </s>
            <s xml:id="echoid-s6538" xml:space="preserve">Quo fit ut illam annuli ſuperſi-
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            ciem quæ ſolis radiis illuminatur conſpicere nequeamus, ſed
              <lb/>
            alteram tantummodo quæ tunc umbræ vices patitur. </s>
            <s xml:id="echoid-s6539" xml:space="preserve">Nulla
              <lb/>
            itaque ne hîc quidem brachia Saturno annulus præſtat, ſed
              <lb/>
            oculis noſtris ereptus orbum ac ſolitarium relinquit. </s>
            <s xml:id="echoid-s6540" xml:space="preserve">Atque
              <lb/>
            hæc cauſa ad continuos quinque aut ſex menſes rotundæ
              <lb/>
            phaſi interdum ſufficit, uti poſtea accuratius docebimus.</s>
            <s xml:id="echoid-s6541" xml:space="preserve"/>
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          <p>
            <s xml:id="echoid-s6542" xml:space="preserve">At non immerito dubitari poſſit, cur & </s>
            <s xml:id="echoid-s6543" xml:space="preserve">hôc & </s>
            <s xml:id="echoid-s6544" xml:space="preserve">præceden-
              <lb/>
            ti quoque annuli poſitu cum planum ejus rectà ad nos ver-
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            git, non ſaltem exterior ejus limbus à Sole illuſtratus appa-
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            reat: </s>
            <s xml:id="echoid-s6545" xml:space="preserve">quid enim dicemus? </s>
            <s xml:id="echoid-s6546" xml:space="preserve">anne tam tenue eſſe totum annu-
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            li corpus, ut licet revera ſplendeat extrema ejus margo, exi-
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            lior tamen ipſa ſit quam quæ noſtris teleſcopiis percipi poſ-
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            ſit? </s>
            <s xml:id="echoid-s6547" xml:space="preserve">Nequaquam: </s>
            <s xml:id="echoid-s6548" xml:space="preserve">verùm res eadem quæ cauſam hanc præ-
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              <note position="left" xlink:label="note-0310-01" xlink:href="note-0310-01a" xml:space="preserve">Quid ſit in
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              Saturni diſco
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              Zona nigri-
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              cans.</note>
            texi vetat, eadem veram cauſam quoque haud dubiè ſuppe-
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            ditat: </s>
            <s xml:id="echoid-s6549" xml:space="preserve">faſcia nimirum illa reliquo Saturni diſco obſcurior,
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            quam & </s>
            <s xml:id="echoid-s6550" xml:space="preserve">rotundo illo apparente, & </s>
            <s xml:id="echoid-s6551" xml:space="preserve">rurſus brachiis aucto,
              <lb/>
            nobis viſam narravimus. </s>
            <s xml:id="echoid-s6552" xml:space="preserve">Hæc ita comparatum eſſe exte-
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            riorem illum annuli ambitum evincit, ut aliqua quidem craſ-
              <lb/>
            ſitudine præditus ſit, verum ejus naturæ, ut ſolis lumen,
              <lb/>
            vel nihil prorſus, vel certè leviter admodum reflectat. </s>
            <s xml:id="echoid-s6553" xml:space="preserve">Quia
              <lb/>
            enim in Saturno etiam brachiis prædito tractus iſte nigricans
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            animadvertitur, nempe cum ſuperſiciem annuli eandem quæ
              <lb/>
            à Sole illuſtratur deſpicimus; </s>
            <s xml:id="echoid-s6554" xml:space="preserve">quo poſitu nulla ejus regio
              <lb/>
            obumbrata oculis noſtris obverſa eſt; </s>
            <s xml:id="echoid-s6555" xml:space="preserve">ſequitur nigredinem
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            illam ex alia cauſa manare non poſſe, niſi quod ejuſcemodi
              <lb/>
            quadam materia annuli margo cooperta ſit, quæ non perin-
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            de ut reliqua ejus ſuperficies repercutiendo lumini ſit </s>
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