Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 1: Opera mechanica
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DE CENTRO OSCILL
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non conſiderantur neque magnitudo neque figura, quaſi ſin-
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gula in unicum punctum reducta forent; </
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<
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penſa ex eodem puncto D, & </
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<
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">elevata ad idem planum Ho-
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rizontale D A B, dimittantur usque ad F & </
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<
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eorum, ex ratione Mechanica, quæ cum experimentis, & </
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cipiis Phyſices congruit, augebuntur in tali ratione, vel quod
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idem eſt, acquirent velocitates tales, ut harum quadrata ſint
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inter ſe ut altitudines A H & </
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<
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<
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pendiculariter deſcendunt ad Horizontem.</
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">Quod ſi dein pondera hæc duo, lineâ aut virgâ inflexi-
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li A B, quam pondere expertem ponimus, conjungamus,
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& </
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<
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ſuſpenſa, dimittamus ad F & </
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">G ab eâdem, quâ ante, alti-
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tudine. </
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<
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">Pendulum ex illis compoſitum, acquiret tantum
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velocitatis quantum ſumma duorum Pendulorum ſimplicium,
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quoniam commune gravitatis centrum E idem, quod antea,
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manebit, & </
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A & </
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quoniam in hoc caſu ratio inter motus ponderum pendebit
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ab eorum ſitu reſpectu puncti ſuſpenſionis D, quod eſt mo-
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tuum centrum. </
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triangula A F D, B G D cum ſint ſimilia, latera eorum
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A H & </
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nalia, id eſt datur eadem ratio inter altitudines, unde pon-
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dera A & </
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<
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deſcendendo; </
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poſitione; </
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<
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">ergo velocitates ſunt diverſæ, quoniam illæ altitu-
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dines, quæ ſunt proportionales velocitatibus ponderum ſimul
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appenſorum, non ſunt proportionales niſi quadratis veloci-
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tatum, quando ſunt ſeparata.</
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occurrere plano duro D F G, quo rumpatur, ita ut a ſe in-
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vicem pondera ſolvantur, erunt hæc reflexa juxta tangentes ar-
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cuum F A & </
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velocitatum, quas cadendo acquiſivere, id eſt, ut </
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