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

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            <s xml:id="echoid-s9935" xml:space="preserve">
              <pb o="718" file="0460" n="482" rhead="CHRISTIANI HUGENII"/>
            Atqui, ex Dioptrices legibus inſtituro calculo, fiebat jam
              <lb/>
            Solis diameter {1/152} ejus par@iculæ centeſimæ octogeſimæ ſecun-
              <lb/>
            dæ, quam, per foramen exiguum, prius conſpexeram. </s>
            <s xml:id="echoid-s9936" xml:space="preserve">Du-
              <lb/>
            ctis autem in ſe {1/152} & </s>
            <s xml:id="echoid-s9937" xml:space="preserve">{1/182}, fit {1/27664}. </s>
            <s xml:id="echoid-s9938" xml:space="preserve">Ergo eou@que contracto
              <lb/>
            Sole, vel eouſque remoto, (erit enim effectus idem) ut dia-
              <lb/>
            meter ejus ſit {1/27664} ejus, quem in cœlo intuemur, ſupereſt
              <lb/>
            illi lux quæ Sirii luci non cedat. </s>
            <s xml:id="echoid-s9939" xml:space="preserve">Solis vero eouſque remo-
              <lb/>
            ti diſtantia erit neceſſario, ad eam quam nunc habet, ut
              <lb/>
            27664 ad 1: </s>
            <s xml:id="echoid-s9940" xml:space="preserve">& </s>
            <s xml:id="echoid-s9941" xml:space="preserve">diameter paulum excedet 4 ſcr. </s>
            <s xml:id="echoid-s9942" xml:space="preserve">tertia. </s>
            <s xml:id="echoid-s9943" xml:space="preserve">Ita-
              <lb/>
            que cum æqualis ei Sirius ponatur, ſequitur Sirii quoque
              <lb/>
            diametrum totidem eſſe ejuſmodi ſcrupulorum; </s>
            <s xml:id="echoid-s9944" xml:space="preserve">diſtantiam-
              <lb/>
            que itidem, ad eam qua à Sole abſumus, ut 27664 ad 1.
              <lb/>
            </s>
            <s xml:id="echoid-s9945" xml:space="preserve">Quod quàm incredibile ſit intervallum, apparebit eadem ra-
              <lb/>
            tione, quam in æſtimanda Solis diſtantia adhibuimus. </s>
            <s xml:id="echoid-s9946" xml:space="preserve">Nam
              <lb/>
            ſi 25. </s>
            <s xml:id="echoid-s9947" xml:space="preserve">annis opus habebat tormenti bellici globus, continua
              <lb/>
            velocitate, quanta exploditur, incedens, ut à Terra ad So-
              <lb/>
            lem perveniret; </s>
            <s xml:id="echoid-s9948" xml:space="preserve">jam numerus 27664 vicies quinquies du-
              <lb/>
            cendus eſt, atque ita fiunt 691600, adeo ut penè ſeptingen-
              <lb/>
            ta annorum millia inſumpturus ſit globus, in tanta celeritate
              <lb/>
            ſua, priuſquam ad proximas ſtellarum inerrantium perve-
              <lb/>
            niat. </s>
            <s xml:id="echoid-s9949" xml:space="preserve">Atque ad has ſtellas ſerena nocte oculos circumferen-
              <lb/>
            tes, quantum horum judicio comprehendere poſſumus, vix
              <lb/>
            aliquot milliaribus ſupra verticem eas exſtare putamus. </s>
            <s xml:id="echoid-s9950" xml:space="preserve">Quæ-
              <lb/>
            ſivi vero de proximis tantum. </s>
            <s xml:id="echoid-s9951" xml:space="preserve">Cæteræ enim cum, ut jam
              <lb/>
            diximus, iis ſpatiis in ulteriora cœli recedant, ut non mino-
              <lb/>
            ra ſint deinceps à propioribus ad ſequentes, quàm à Sole
              <lb/>
            ad iſtas, quanta immenſitas ſupereſt! Si enim plures quàm
              <lb/>
            mille, nudo viſu notantur; </s>
            <s xml:id="echoid-s9952" xml:space="preserve">teleſcopiis verò decuplo aut vi-
              <lb/>
            gecuplo amplius; </s>
            <s xml:id="echoid-s9953" xml:space="preserve">quomodo ſciri poteſt aut definiri, quanta
              <lb/>
            ſit multitudo ulteriorum, quas neque hoc auxilio attingere
              <lb/>
            licet: </s>
            <s xml:id="echoid-s9954" xml:space="preserve">aut quis numerus nimis magnus dicendus eſt, ſi ad Dei
              <lb/>
            potentiam ſpectemus? </s>
            <s xml:id="echoid-s9955" xml:space="preserve">Etenim, ſæpe hæc cogitanti mihi,
              <lb/>
            in mentem venit, tanrùm in primis numerorum exordiis cal-
              <lb/>
            culos omnes noſtros verſari. </s>
            <s xml:id="echoid-s9956" xml:space="preserve">Eſſe enim in ſerie eorum in-
              <lb/>
            finita, qui non tantùm viginti aut triginta, aut centum,
              <lb/>
            aut mille notis ſcribantur in progreſſione noſtra denaria; </s>
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