Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 1: Opera mechanica
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HOROLOG. OSCILLATOR.
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<
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xml:space
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">Quomodo porro ratio O B ad B P, ſive N H ad H L,
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<
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<
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<
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.</
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non tantum cum A B F parabola eſt, ſed etiam alia quæli-
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bet curva geometrica, ſemper inveniri poſſit manifeſtum eſt.
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</
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<
s
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xml:space
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">Quoniam tantum recta F H ducenda eſt, quæ curvam in
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Fig. 4. & 5.</
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adſumpto puncto F tangat, & </
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xml:space
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laris: </
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<
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xml:space
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<
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xml:space
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">H L datæ erunt, ac proinde ratio quo-
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que earum data.</
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<
s
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xml:space
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">At non æque liquet quo pacto ratio K L ad M N innoteſcat,
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quam tamen ſemper quoque reperiri poſſe ſic oſten-demus.</
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<
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<
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<
s
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xml:space
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">Sint rectæ K T, L V, perpendiculares ſuper K L, ſit-
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que K T æqualis K M, & </
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<
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xml:space
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<
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V X parallela L N, quæ occurrat ipſi K T in X. </
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niam ergo ſemper eadem eſt differentia duarum L K, N M,
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quæ duarum L N, K M, hoc eſt, quæ duarum L V, K T;
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</
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<
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xml:space
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">eſt autem differentiæ ipſarum L V, K T æqualis X T, & </
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X V ipſi L K; </
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<
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xml:space
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">erit proinde N M æqualis duabus ſimul
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V X, X T, vel ei quo V X ipſam X T ſuperat. </
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adeo, ſi data fuerit ratio V X ad X T, data quoque erit
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ratio V X ad utramque ſimul V X, X T, vel ad exceſſum V X
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ſupra X T, hoc eſt, data erit ratio V X ſive L K ad N M.</
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<
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xml:space
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<
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">L V
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ipſi L N, æquales ſumptæ ſunt, locum punctorum T, V,
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fore lineam quandam vel rectam vel curvam datam, ut mox
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oſtendetur. </
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<
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">ut contingit ſi A B F
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coni ſectio fuerit, & </
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<
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xml:space
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<
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xml:space
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">conſtat rationem V X
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ad X T datam fore, data poſitione ipſius lineæ V T, quæ
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locus eſt puuctorum V, T; </
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<
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dictam rationem, qualecunque fuerit intervallum K L.</
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<
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xml:space
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">At ſi locus alia linea curva fuerit, diverſa erit ratio V X
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ad X T, prout majus minuſve fuerit intervallum K L. </
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quirendum eſt autem quænam futura ſit iſta ratio, cum K L
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infinite parvum imaginamur, quoniam & </
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xima invicem poſuimus. </
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lineæ curvæ minimam particulam intercipere intelligendum
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eſt; </
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">unde recta V T, cum ea quæ in T curvam contingit,
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coincidet. </
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