Stevin, Simon
,
Mathematicorum hypomnematum... : T. 4: De Statica : cum appendice et additamentis
,
1605
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1 L*IBER* S*TATICÆ*
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<
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">Vnde conſequitur. </
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xml:space
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">Si ratio ponderis in I quieſcentis, ad pondus H quære-
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retur, ductis perpendicularibus K L, M N, ſecantibus E F axem in O, P, ra-
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tionem G O ad G P fore quæſitam. </
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<
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<
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vitate cognitâ: </
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<
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">pondera quoque cognoſci quæ cuique puncto, ut H & </
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nituntur.</
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<
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QVORVM PROPRIETATES DEINCEPS</
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<
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">deſcribendæ ſunt, quarum omnium genera-
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lem veritatem tanquam fundamentum istud
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theoremata complectitur.</
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<
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xml:space
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<
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">Si triangulum planum horizonti eſt perpendiculare, ba-
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ſis parallela, reliquis autem lateribus globi ſinguli addan-
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xml:space
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ma põdus eſſe
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quod additur
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ad æquipon-
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dium faci@n-
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dum. Cui an-
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tiſac
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oma op-
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poſuimus.</
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trum ad ſiniſtrum: </
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globi dextri.</
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baſis vero parallela. </
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<
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D. </
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re & </
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bis eſt, quemadmodum latus A B 2, ad
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latus B C 1: </
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<
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">ita ſacoma globi E, ad an-
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tiſacoma globi D.</
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quatuordecim globorum pondere & </
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magnitudine æqualium, quaſi coronâ
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ut E, F, G, H, I, K, L, M, N, O, P, Q, R, D,
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cunctum ſingamus, qui omnes lineâ per
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cĕtro ipſorum, ut in illis moveri poſſint,
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tranſeunte, colligati æquali inter ſeſpa-
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cio diſtent, ut illorũ bini lateri B C, qua-
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terni vero B A accommodentur, hoc eſt, quemadmodum linea ad lineam; </
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<
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globi ſint ad globos. </
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">Inſuper in S, T, V tria ſint puncta immota ac ſixa, quæà
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lineâ ſive globorum funiculo, cum movetur, raduntur, ac ſtringuntur: </
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funiculi partes, quæ ſupra trianguli baſin, lateribus A B, B C ſint parallelæ,
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ut, quando connexio illa ſeriesq́; </
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">globorum adſcendit, deſcenditve, globi pes
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crura A B, B C volui poſſint.</
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