Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 1: Opera mechanica
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MECHANICAM.
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particulæ ſimul impingerent; </
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<
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xml:space
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">unde triplâ exiſtente velocitate,
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maſſâ etidem triplâ, potentia aut vis erit noncupla; </
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<
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xml:space
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<
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patet maſſam augeri in eadem ratione, qua velocitas auge-
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tur; </
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<
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xml:space
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<
s
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xml:space
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">cum unaquæque pars etiam fortius impingat in ratio-
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ne auctæ velocitatis, potentia aut vis venti in velum, eſt in
<
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ratione duplicata celeritatum venti, id eſt, in ratione qua-
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dratorum velocitatum venti in velum. </
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<
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xml:space
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">Agnoſcit hocce prin-
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cipium Cl. </
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<
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">Hugenius; </
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<
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plicemus.</
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<
s
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xml:space
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">Prima applicatio oſtendet, quare vis venti in velum, cum
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ventus velo perpendicularis eſt, ſeſe habeat ad vim ejuſdem
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venti in velum, quando illud inclinatum vento opponitur,
<
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ut quadratum radii ad quadratum ſinûs anguli incidentiæ;
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</
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<
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xml:space
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">aut, quod idem eſt, cur vires ejuſdem venti in vela varia in-
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clinatione ipſi obtenſa, ſint inter ſe in ratione quadratorum
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ſinuum angulorum incidentiæ, quod demonſtravi Articulis
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7. </
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<
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">quod etiam hoc modo nunc demonſtro. </
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Probatum dedi in Theoria Manuariæ Nauticæ, Artic. </
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1. </
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<
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xml:space
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">corpus motum ab A in B non occurrere ſuperficiei C D
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niſi ſecundum determinationem ſuam A V, ponendo ſcilicet
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A V perpendicularem ipſi D C productæ, & </
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<
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ficiem nullam vim exſerere niſi ſecundum hanc determinatio-
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nem; </
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<
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Hugenius. </
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">Hoc poſito, ventus A B
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in velum non agit, niſi ſecundum hanc determinationem, id
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eſt, cum velocitate A V. </
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<
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pendiculare eſſet, ventus in velum ageret velocitate A B; </
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<
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& </
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<
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">per conſequens ex principio quod ſtatim adſtruxi, vis
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cum qua ventus in velum ageret, ſi vento eſſet perpendicula-
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re, eſt ad vim venti in velum D, quod inclinatè vento ob-
<
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tenditur, ut quadratum A B ad quadratum A V, id eſt,
<
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ut quadratum radii ad quadratum ſinûs anguli incidentiæ.</
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<
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xml:space
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">Secunda applicatio inſervit ſolvendæ quæſtioni, de qua
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lis eſt inter D
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Hugenium & </
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<
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velo conſtituto in ſitu C D, & </
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ventus ope veli, navim ſecundum B G propellit, ſit ad vim,
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qua idem ventus, ope ejuſdem veli navim propellit </
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