Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 1: Opera mechanica
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HOROLOG. OSCILLATOR.
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ves in anchoris ſtant omnium optima videtur, quod, abs-
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<
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<
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<
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que inſtrumentorum ope, ſolis oculis eæ obſervationes per-
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agantur.</
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<
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xml:space
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">Pendulum vero unciarum novem longitudine inerat horolo-
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giis hiſce, pondere ſemiſſis. </
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xml:space
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">Rotæ ponderum attractu cir-
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cumagebantur, eademque cum illis theca incluſæ erant quater-
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num pedum longitudine. </
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>
<
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xml:space
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">In ima theca plumbum inſuper
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centum atque amplius librarum additum erat, quo melius
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perpendicularem ſitum ſuſpenſa in navi machina ſervaret.</
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</
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<
s
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xml:space
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">Quanquam autem æquabilis admodum ſibique conſtans
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/>
automati motus per hæc experimenta comperiebatur, tamen
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alia quoque ratione ulterius illud perficere aggreſſi ſumus,
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quæ erat hujuſmodi. </
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>
<
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xml:space
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">Rotæ illi quæ ſerratos dentes habet,
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penduloque proxima eſt, pondus exiguum ex catenula affa-
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/>
bre conſtructa appendimus, quo ſola ipſa moveretur, reli-
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/>
qua omni machina nihil aliud agente quam ut ſingulis ſemi-
<
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/>
ſcrupulis horariis plumbum illud exiguum ad priorem alti-
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tudinem reſtitueret; </
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<
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xml:space
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">eadem fere ratione atque in conſtructio-
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ne horologii ſuperius expoſita videre eſt, ubi pondus al-
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tero fune attollitur, dum altero gravitatem ſuam horolo-
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gii motui impertit. </
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>
<
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">Quibus ita conſtructis, cum veluti ad
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unicam rotam omnia eſſent redacta, major adhuc quam an-
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tea apparuit horologiorum æqualitas, illudque accidit me-
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moratu dignum, quod cum duo ad hanc formam conſtructa
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ex eodem tigno ſuſpendiſſemus, tignum vero fulcris duobus
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impoſitum eſſet; </
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<
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xml:space
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">motus penduli utriuſque ita ictibus adver-
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ſis inter ſe conſenſere, ut nunquam inde vel minimum rece-
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derent, ſed utriuſque ſonus una ſemper exaudiretur: </
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">imo
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ſi data opera perturbaretur concordia illa, ſemetipſam brevi
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tempore reduceret. </
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">Miratus aliquandiu rem adeo inſolitam,
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inveni denique, inſtituto diligenti examine, à motu ti-
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gni ipſius, licet haudquaquam ſenſibili, cauſam petendam
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eſſe. </
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<
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">Nempe pendulorum reciprocationes horologiis, quanto-
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libet pondere gravatis, motum aliquem communicare; </
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<
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xml:space
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">hunc
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vero motum, tigno ipſi impreſſum, neceſſario efficere ut
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ſi aliter quam contrariis ad unguem ictibus pendulum </
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