Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 1: Opera mechanica
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HOROLOG. OSCILLATOR.
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rum quæ ex paraboloidibus naſcuntur conſtructionem, du-
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<
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">De linea-</
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<
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<
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<
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<
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cendæ ſunt lineæ D B Z, quæ ad datum punctum B ſecent
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curvas A B, ſive ipſarum tangentes B H, ad angulos re-
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ctos; </
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<
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xml:space
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">dicemus in univerſum quomodo hæ tangentes inve-
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niantur. </
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<
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xml:space
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">In æquatione itaque, quæ cujusque curvæ naturam
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explicat, quales æquationes duabus tabellis præcedentibus
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exponuntur, conſiderare oportet quæ ſint exponentes pote-
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ſtatum x & </
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<
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xml:space
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<
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xml:space
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">facere ut, ſicut exponens poteſtatis x ad
<
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exponentem poteſtatis y, ita ſit S K ad K H. </
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<
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xml:space
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">Juncta enim
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H B curvam in B continget. </
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<
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xml:space
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">Velut in tertia hyperboloide,
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cujus æquatio eſt x y
<
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= a
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: </
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<
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xml:space
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">quia exponens poteſtatis x eſt
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1, poteſtatis autem y exponens 2; </
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">oportet eſſe ut 1 ad 2 ita
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S K ad K H. </
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<
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xml:space
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">Horum autem demonſtrationem noverunt
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analyticæ artis periti, qui jam pridem omnes has lineas con-
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templari cœperunt; </
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xml:space
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">& </
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xml:space
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">non ſolum paraboloidum iſtarum,
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ſed & </
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">ſpatiorum quorundam infinitorum, inter hyperboloi-
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des & </
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">aſymptotos interjectorum, plana ſolidaque dimenſi
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ſunt. </
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">nos, facili atque univerſali metho-
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do, expedire poſſemus, ex ſola tangentium proprietate ſum-
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pta demonſtratione. </
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<
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PARS QUARTA.</
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>
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<
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xml:space
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">CEntrorum Oſcillationis, ſeu Agitationis, inveſtigatio-
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nem olim mihi, fere adhuc puero, aliiſque multis, do-
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ctiſſimus Merſennus propoſuit, celebre admodum inter illius
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temporis Geometras problema, prout ex litteris ejus ad me
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datis colligo, nec non ex Carteſii haud pridem editis, qui-
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bus ad Merſennianas ſuper his rebus reſponſum continetur.
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