Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 1: Opera mechanica
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CHRISTIANI HUGENII
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plana inclinata contigua, ac rurſus ex pari al-
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titudine deſcendat per plana totidem contigua, ita
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comparata ut ſingula altitudine reſpondeant ſingu-
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lis priorum planorum, ſed majori quam illa ſint
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inclinatione. </
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<
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">Dico tempus deſcenſus per minus in-
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clinata, brevius eſſe tempore deſcenſus per magis
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inclinata.</
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<
s
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">Sint ſeries duæ planorum inter easdem parallelas horizon-
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Fig. 1.</
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tales comprehenſæ A B C D E, F G H K L, atque ita ut
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bina quæque ſibi correſpondentia plana utriusque ſeriei iisdem
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parallelis horizontalibus includantur; </
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<
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xml:space
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">unumquodque vero ſeriei
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F G H K L magis inclinatum ſit ad horizontem quam pla-
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num ſibi altitudine reſpondens ſeriei A B C D E. </
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<
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viori tempore abſolvi deſcenſum per A B C D E, quam
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per F G H K L.</
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<
s
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">Nam primo quidem tempus deſcenſus per A B, brevius
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eſſe conſtat tempore deſcenſus per F G, quum ſit eadem
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ratio horum temporum quæ rectarum A B ad F G ,
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huj.</
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A B minor quam F G, propter minorem inclinationem.
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<
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">Producantur jam ſurſum rectæ C B, H G, occurrantque
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horizontali A F in M & </
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A B, æquale eſt tempori per eandem B C poſt M B, cum
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in puncto B eadem celeritas contingat, ſive per A B, ſive
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per M B deſcendenti . </
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<
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">ſimiliterque tempus per G H
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huj.</
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F G, æquale erit tempori per eandem G H poſt N G. </
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<
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autem tempus per B C poſt M B ad tempus per G H poſt
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N G, ut B C ad G H longitudine, ſive ut C M ad H N,
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cum hanc rationem habeant & </
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<
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& </
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<
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<
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huj.</
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Eſtque B C, minor quam G H propter minorem inclina-
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tionem. </
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