Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica
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Atqui, ex Dioptrices legibus inſtituro calculo, fiebat jam
<
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Solis diameter {1/152} ejus par@iculæ centeſimæ octogeſimæ ſecun-
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dæ, quam, per foramen exiguum, prius conſpexeram. </
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<
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xml:space
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ctis autem in ſe {1/152} & </
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<
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xml:space
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<
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xml:space
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">Ergo eou@que contracto
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Sole, vel eouſque remoto, (erit enim effectus idem) ut dia-
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meter ejus ſit {1/27664} ejus, quem in cœlo intuemur, ſupereſt
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illi lux quæ Sirii luci non cedat. </
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<
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xml:space
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">Solis vero eouſque remo-
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ti diſtantia erit neceſſario, ad eam quam nunc habet, ut
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27664 ad 1: </
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<
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xml:space
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<
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<
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xml:space
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que cum æqualis ei Sirius ponatur, ſequitur Sirii quoque
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diametrum totidem eſſe ejuſmodi ſcrupulorum; </
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<
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que itidem, ad eam qua à Sole abſumus, ut 27664 ad 1.
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</
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">Quod quàm incredibile ſit intervallum, apparebit eadem ra-
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tione, quam in æſtimanda Solis diſtantia adhibuimus. </
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<
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ſi 25. </
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">annis opus habebat tormenti bellici globus, continua
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velocitate, quanta exploditur, incedens, ut à Terra ad So-
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lem perveniret; </
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">jam numerus 27664 vicies quinquies du-
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cendus eſt, atque ita fiunt 691600, adeo ut penè ſeptingen-
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ta annorum millia inſumpturus ſit globus, in tanta celeritate
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ſua, priuſquam ad proximas ſtellarum inerrantium perve-
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niat. </
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tes, quantum horum judicio comprehendere poſſumus, vix
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aliquot milliaribus ſupra verticem eas exſtare putamus. </
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ſivi vero de proximis tantum. </
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diximus, iis ſpatiis in ulteriora cœli recedant, ut non mino-
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ra ſint deinceps à propioribus ad ſequentes, quàm à Sole
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ad iſtas, quanta immenſitas ſupereſt! Si enim plures quàm
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mille, nudo viſu notantur; </
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xml:space
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gecuplo amplius; </
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ſit multitudo ulteriorum, quas neque hoc auxilio attingere
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licet: </
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potentiam ſpectemus? </
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in mentem venit, tanrùm in primis numerorum exordiis cal-
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culos omnes noſtros verſari. </
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finita, qui non tantùm viginti aut triginta, aut centum,
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aut mille notis ſcribantur in progreſſione noſtra denaria; </
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