Stevin, Simon
,
Mathematicorum hypomnematum... : T. 4: De Statica : cum appendice et additamentis
,
1605
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*DE* H*YDROSTATICES ELEMENTIS*.
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<
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">Latus A B 3 per A D multiplicatum efficit 12 quæ ſecundò
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182
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per A D 3 multiplicata dabunt 36 cubicos pedes, ejus ſemiſſis
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18 numerus optatus. </
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<
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">quadratum ab A B 3 in dimi-
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dium lateris A B 4 exhibet 18 pedes, ut ſupra. </
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pedibus æſtimatis 65 ℔, efficitur pondus 1170 ℔ iſti fundo in-
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nixum.</
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xml:space
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">ABCD parallelogrammum obliquangulum horizonti per-
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pendiculare, cujus latus A B in aquæ ſuperficie quatuor ſit pedum, perpendi-
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cularis à ſummo latere A B in imum D C eſto A E 3.</
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<
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xml:space
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">A E 3 multiplicata per A B 4 faciunt 12 quæ rur-
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fig-527.01.131-02a
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number
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183
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ſum in A E 3 multiplicata dabunt 36 pedes cubicos,
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ejus ſemiſſis 18 ſunt quæſitus pedum cubicorum nu-
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merus. </
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multiplicato, redit idem 18.</
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<
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A B, in ſuperficie aquæ 6 pedum, A D 4, A E per-
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number
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184
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pendicularis ab A in planum per D C horizonti pa-
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rallelum 3 eſto pedum.</
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pondus invenire.</
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ciunt 72, ejus ſemiſſis 36 optati cubici pedes. </
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<
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<
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<
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">ABCD parallelogrammum obliquangulum ad horizontem
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obliquum, cujus latus A B in ſuperficie aquęſit pedum 6, A E 4 perpendicu-
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laris in latus C D, A F 6 perpendicularis plano ho-
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rizonti per C D parallelo.</
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<
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<
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cumbentis pondus invenire.</
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cum A F 3 efficiunt 72 cubicos pedes, ſemiſſis 36
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quæſitus pedum numerus. </
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ternis per ſenarii ſemiſſem dabit eoſdem 36 pedes.</
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