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

Table of handwritten notes

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          <figure number="211">
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        <div xml:id="echoid-div377" type="section" level="1" n="150">
          <head xml:id="echoid-head207" xml:space="preserve">CHRISTIANI HUGENII
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          DE
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          SATURNI ANNULO
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          OBSERVATIONES.</head>
          <head xml:id="echoid-head208" xml:space="preserve">I.</head>
          <head xml:id="echoid-head209" style="it" xml:space="preserve">Obſervationes in Saturnum Pariſiis habitæ in Bi-
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          bliotheca Regia.</head>
          <p>
            <s xml:id="echoid-s8102" xml:space="preserve">ANno 1668, 17 Aug.</s>
            <s xml:id="echoid-s8103" xml:space="preserve">, hora 11 veſpertinâ D
              <emph style="super">ni</emph>
            Hu-
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            genius & </s>
            <s xml:id="echoid-s8104" xml:space="preserve">Picart obſervarunt Planetam Satur-
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              <note position="right" xlink:label="note-0377-01" xlink:href="note-0377-01a" xml:space="preserve">TAB. LL
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              fig. 2.</note>
            num ope teleſcopiorum 21 pedum & </s>
            <s xml:id="echoid-s8105" xml:space="preserve">invene-
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            runt figuram ejus talem qualem hic exhibemus,
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            globo in medio manifeſte excedente ſupra & </s>
            <s xml:id="echoid-s8106" xml:space="preserve">
              <lb/>
            infra ovalem quod vix dum anno præceden-
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            ti erat conſpicuum.</s>
            <s xml:id="echoid-s8107" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8108" xml:space="preserve">Menſurarunt diverſimode inclinationem magnæ diametri
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            Ovalis ad æquatorem, quæ inventa eſt circiter 9 graduum, li-
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            cet eo empore tantum debuerit eſſe 4 graduum, ſecundum illa,
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            quæ D. </s>
            <s xml:id="echoid-s8109" xml:space="preserve">Hugenius dixit in Syſtemate Saturni, planum annu-
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            li, qui circumdat globum Planetæ cum plano Eclipticæ tan-
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            tum efficere angulum 23. </s>
            <s xml:id="echoid-s8110" xml:space="preserve">gr. </s>
            <s xml:id="echoid-s8111" xml:space="preserve">3ó; </s>
            <s xml:id="echoid-s8112" xml:space="preserve">ſed cum ultima hæc obſer-
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            vatio, & </s>
            <s xml:id="echoid-s8113" xml:space="preserve">ſimiles aliæ hujus anni & </s>
            <s xml:id="echoid-s8114" xml:space="preserve">præcedentis, magis exa-
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            ctæ ſint & </s>
            <s xml:id="echoid-s8115" xml:space="preserve">habitæ tempore magis opportuno ad menſuran-
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            dam obliquitatem, illis, quæ fundamentum fuere memo-
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            ratæ detereminationis, D
              <emph style="super">us</emph>
            Hugenius invenit, loco 23
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            gr 3ó angulum plani Annularis & </s>
            <s xml:id="echoid-s8116" xml:space="preserve">Eclipticæ eſſe circiter 31
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              <note position="right" xlink:label="note-0377-02" xlink:href="note-0377-02a" xml:space="preserve">Vera annuii
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              inclinatio.</note>
            graduum; </s>
            <s xml:id="echoid-s8117" xml:space="preserve">& </s>
            <s xml:id="echoid-s8118" xml:space="preserve">hoc poſito, non ſolum formam, quam jam </s>
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