Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 1: Opera mechanica
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HOROLOG. OSCILLATOR.
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quæque ſuſpenſa ab axe, qui per punctum F ad planum hu-
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<
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<
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<
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.</
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jus paginæ erectus intelligitur, habeat centrum oſcillationis
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G. </
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xml:space
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">Porrò axi per F intelligatur axis alius, per centrum gra-
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vitatis E transiens, parallelus. </
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<
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xml:space
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preserve
">Diviſaque magnitudine cogita-
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tu in particulas minimas æquales, ſit quadratis diſtantiarum,
<
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ab axe dicto per E, æquale planum I, multiplex nempe ſe-
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cundum numerum dictarum particularum; </
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>
<
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xml:space
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">applicatoque pla-
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no I ad diſtantiam F E, fiat recta quædam. </
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<
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xml:space
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">Dico eam æ-
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qualem eſſe intervallo E G, quo centrum oſcillationis infe-
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rius eſt centro gravitatis magnitudinis A B C D.</
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<
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<
s
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xml:space
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">Ut enim univerſali demonſtratione quod propoſitum eſt
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comprehendamus: </
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<
s
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xml:space
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">intelligatur plana figura, magnitudini
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A B C D analoga, ad latus adpoſita, O Q P; </
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<
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">quæ nempe,
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ſecta planis horizontalibus iisdem cum magnitudine A B C D,
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habeat ſegmenta intercepta inter bina quæque plana, in ea-
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dem inter ſe ratione cum ſegmentis dictæ magnitudinis, quæ
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ipſis reſpondent; </
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<
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xml:space
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">ſintque ſegmenta ſingula figuræ O Q P,
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diviſa in tot particulas æquales, quot continentur ſegmentis
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ipſis reſpondentibus in figura A B C D. </
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<
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xml:space
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">Hæc autem intel-
<
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ligi poſſunt fieri, qualiscunque fuerit magnitudo A B C D,
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ſive linea, ſive ſuperficies, ſive ſolidum. </
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>
<
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xml:space
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">Semper vero cen-
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trum gravitatis figuræ O Q P, quod ſit T, eadem altitu-
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dine eſſe manifeſtum eſt cum centro gravitatis magnitudinis
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A B C D; </
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<
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">ideoque, ſi planum horizontale, per F ductum,
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ſecet lineam centri figuræ O Q P, velut hic in S, æquales
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eſſe diſtantias S T, F E.</
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<
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<
s
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xml:space
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">Porrò autem conſtat quadrata diſtantiarum, ab axe oſcil-
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lationis F, applicata ad diſtantiam F E, multiplicem ſecun-
<
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dum numerum particularum, efficere longitudinem penduli
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iſochroni ; </
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">quæ longitudo poſita fuit F G. </
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xml:space
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xml:space
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">Prop. 6.
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huj.</
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quadratorum ſummam, æqualem eſſe perſpicuum eſt, qua-
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dratis diſtantiarum à plano horizontali per F, unà cum qua-
<
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dratis diſtantiarum à plano verticali F E, per axem F & </
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>
<
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xml:space
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trum gravitatis E ducto . </
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<
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xml:space
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">Atqui quadrata diſtantiarum
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xml:space
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">Prop. 47.
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lib. 1. Eucl.</
note
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gnitudinis A B C D à plano horizontali per F, æquantur
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quadratis diſtantiarum figuræ O Q P ab recta S F. </
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