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

Table of figures

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            <s xml:id="echoid-s6729" xml:space="preserve">
              <pb o="584" file="0320" n="337" rhead="CHRIST. HUGENII"/>
            nuli planum, quam initio Sept. </s>
            <s xml:id="echoid-s6730" xml:space="preserve">tantum gr. </s>
            <s xml:id="echoid-s6731" xml:space="preserve">2. </s>
            <s xml:id="echoid-s6732" xml:space="preserve">15′, fuiſſe
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            diximus, ſimul imminuta eſt. </s>
            <s xml:id="echoid-s6733" xml:space="preserve">Pari ratione nec Gaſſendus
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            brachia ulla percipere potuit menſe Febr. </s>
            <s xml:id="echoid-s6734" xml:space="preserve">anni 1643. </s>
            <s xml:id="echoid-s6735" xml:space="preserve">etſi
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            tunc quoque Sol oculuſque obſervantis eandem annuli ſuper-
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            ficiem intuebantur; </s>
            <s xml:id="echoid-s6736" xml:space="preserve">ſcilicet quia Saturni locus eccentricus in
              <lb/>
            gr. </s>
            <s xml:id="echoid-s6737" xml:space="preserve">26. </s>
            <s xml:id="echoid-s6738" xml:space="preserve">♓ inveniebatur, hoc eſt 5{1/2} gr. </s>
            <s xml:id="echoid-s6739" xml:space="preserve">à loco æquinoctii,
              <lb/>
            eoque altitudo Solis ſupra annuli ſuperſiciem tantum g. </s>
            <s xml:id="echoid-s6740" xml:space="preserve">2.
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            </s>
            <s xml:id="echoid-s6741" xml:space="preserve">11′. </s>
            <s xml:id="echoid-s6742" xml:space="preserve">Denique & </s>
            <s xml:id="echoid-s6743" xml:space="preserve">anno 1656, menſis Martii diebus aliquot,
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            quibus ſimiliter eadem annuli ſuperficies ad nos Solemque
              <lb/>
            ſpectabat, multo minus brachiorum ullum veſtigium appa-
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            rere debuit, quod nunquam dimidio gr. </s>
            <s xml:id="echoid-s6744" xml:space="preserve">ſupra planum an-
              <lb/>
            nuli Sol attolleretur. </s>
            <s xml:id="echoid-s6745" xml:space="preserve">Nam reliquo tempore fulſionis illius,
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            diverſas partes loci æquinoctiorum locus Saturni ex Sole at-
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            que obſervatus locus obtinebant, unde ex ſuperius allata
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            cauſa brachiorum expertem cerni oportuit.</s>
            <s xml:id="echoid-s6746" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6747" xml:space="preserve">Neque verò magis conſpicuum nobis annulum fieri cre-
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            dendum eſt, ſi altius ſupra planum ejus oculus attollatur,
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            Sole tamen ex obliquo tantum radiis ſuis eum perſtringente,
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            quemadmodum contigit dicta Saturni ſtatione ad 14 Nov.
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            </s>
            <s xml:id="echoid-s6748" xml:space="preserve">1612; </s>
            <s xml:id="echoid-s6749" xml:space="preserve">quippe quo tempore Sol gradu 1. </s>
            <s xml:id="echoid-s6750" xml:space="preserve">36′ ſupra planum
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            annuli aſcenderat, viſus autem noſter gr. </s>
            <s xml:id="echoid-s6751" xml:space="preserve">3. </s>
            <s xml:id="echoid-s6752" xml:space="preserve">53′. </s>
            <s xml:id="echoid-s6753" xml:space="preserve">Idem enim
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            in quacunqne plana ſuperficie experiri licet, in quam ſi à la-
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            tere radii luminis incidant, non apparcbit illuſtrior quocun-
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            que in loco viſus ſtatuatur, ſed tum demum, ſi radios à lu-
              <lb/>
            mine rectiores accipiat. </s>
            <s xml:id="echoid-s6754" xml:space="preserve">Uti contra quoque ſi amplius ad
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            lumen obverſa directiuſque illuminata fuerit, non refert
              <lb/>
            quàm obliquè in eam radii viſus incidant, ſed undecunque
              <lb/>
            ſpectata æque lucida apparebit. </s>
            <s xml:id="echoid-s6755" xml:space="preserve">Atque ita fit ut cum Sol
              <lb/>
            paulo altius ſupra planum annuli ſeſe extulit, tribus puta
              <lb/>
            gradibus aut paulo amplius; </s>
            <s xml:id="echoid-s6756" xml:space="preserve">viſu licet noſtro non niſi uno
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            gradu extante; </s>
            <s xml:id="echoid-s6757" xml:space="preserve">ſplendere jam nunc annulus incipiat, Satur-
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            noque brachia adnaſcantur. </s>
            <s xml:id="echoid-s6758" xml:space="preserve">Sicut anno 1612. </s>
            <s xml:id="echoid-s6759" xml:space="preserve">circa ſolſti-
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            tium accidit, Saturno ex Sole circa gr. </s>
            <s xml:id="echoid-s6760" xml:space="preserve">12. </s>
            <s xml:id="echoid-s6761" xml:space="preserve">♓, hoc eſt, gr. </s>
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            8{1/2} ab æquinoctio ſuo agente, ac proinde Solis altitudine ſu-
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            pra planum annuli graduum 3. </s>
            <s xml:id="echoid-s6763" xml:space="preserve">23′: </s>
            <s xml:id="echoid-s6764" xml:space="preserve">Galilæi verò oculo vix
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            uno gr. </s>
            <s xml:id="echoid-s6765" xml:space="preserve">ſupra idem planum elevato. </s>
            <s xml:id="echoid-s6766" xml:space="preserve">Videbatur enim </s>
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