Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 1: Opera mechanica
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DE CENTRO OSCILL.
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ſuſpenſis, a quo pondus unum quater magis quam alterum
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diſtat; </
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<
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">ita ut altitudines perpendiculares, unde deſcendunt
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ſint ut 1 ad 4.</
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<
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<
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xml:space
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">Convenit inter nos de proportione inter has altitudines, & </
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<
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de ſumma velocitatum, quas illa pondera acquirerent, ſi ſe-
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paratim ab iis altitudinibus caderent; </
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<
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">ſed contendimus de
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exprimendis his altitudinibus reſpectu ſpatii, quod ſit com-
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munis earum menſura, & </
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<
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<
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xml:space
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">Cum omni-
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bus, qui ante me de ſimilibus quæſtionibus ſcripſerunt, po-
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/>
no veros numeros, quibus exprimuntur altitudines, eſſe qua-
<
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drata ipſorum numerorum qui velocitates deſignant, in illis
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caſibus, in quibus inter altitudines & </
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<
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xml:space
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alia datur ratio, præter generalem experientiâ detectam.</
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<
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">Patet autem ex numeris quos in computatione mea detexi,
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(cum 9 & </
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">144 ducta in {1/25} pedis, id eſt 6 pedes cum 1 digito
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5 lineis & </
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">4 pedibus,
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aut 5 pedibus,) ſummas altitudinum, ad quas adſcendunt pon-
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dera in exemplo propoſito, non eſſe æqualem ſummæ alti-
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tudinum unde deſcendunt, quam æqualitatem D
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. </
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<
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nius ponit in generali propoſitione, quâ utitur pro princi-
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pio in ſuo tractatu de centro Oſcillationis.</
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<
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<
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. </
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<
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">Bernoulli reſpondet, quadrata numerorum, qui
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exprimunt velocitates ponderum, tantum exprimere pro-
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portionem altitudinum, ad quas revertuntur poſt illo-
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rum ſeparationem, & </
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">non ipſas altitudines, quæ qui-
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dem inter ſe habere poſſunt rationem, {144/25} ad {9/25} dum ta-
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men harum ſumma eſt 5, quæ eſt ſumma altitudinum,
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unde pondera deſcenderunt. </
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">Nam altitudines, ad quas
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revertuntur ſeparata, ſunt juxta illum 4{12/17} & </
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ſumma valet 5, ut ſumma primarum altitudinum 1. </
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</
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D
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. </
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<
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">Bernoulli, dum contendit, proportionem quadra-
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torum numerorum, qui velocitates exprimunt, tantum
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conſiderandam eſſe, quâ motus lege, & </
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principium Mechanicum pondera, de quibus agimus, po-
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tius redeant ad altitudines, quas ille notavit, &</
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