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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pondus, æquale ponderi aqueæ columnæ cujus baſis E F, altitudo perpendicu-
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laris ab M I aquæ ſummo in fundum E F demiſſa. </
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<
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">Atque ita in cæteris omni-
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bus figuris quarum fundum fit in plano horizonti parallelo.</
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<
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<
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Praxis Hydroſtatices ubi experientia hæc clarius compro-
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bantur.</
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<
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">Aquæfundo in ſuperficie mundana cõſtitu to inſidet pon-
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dus æquipondiũ aquæ cujus magnitudo ſit ęqualis ſegmĕ-
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to ſphærę comprehenſæ à fundo & </
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<
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">mundana ſuperficie per
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ſummitatem aquæ eductę, quæ cõjungat ſuperficies inter
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ipſa interjecta, deſcripta à linea infinita in mundi centro
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fixa & </
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<
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expoſitas, iſto modo proponere non placuit.</
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<
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cie ſumma conſiſtat, inſidens ipſi pondus æquatur ſemiſsi
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aqueæ columnæ cujus baſis fundo, altitudo autem per-
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pendicularì, à ſummo fundi puncto in planum per ejuſ-
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dem imum punctum horizonti æquidiſtanter eductum,
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demiſſæ æqualis ſit.</
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zontem & </
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">primò quidem in angulo recto, cujus ſupremum latus A C ſit in ſu-
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perficie ſumma aquæ A C F G; </
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per fundi imum punctum, ut E D, horizonti æquidiſtanter eductum. </
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recta D B horizonti parallela, à qua abſumatur D H ipſi D C æqualis, & </
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nectatur C H; </
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altitudo D H æqualis ipſi A E.</
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impreſſionem gravitatis aquę cõ-
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tra fundũ A C D E æquari expoſi-
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tæ dimidiæ columnæ A C H D E.
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dus obliquè ducens gravitate ipſi
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A C H D E æquale, funisq́; </
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ctorius K L parallelus cõtra D H,
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K autem preſſionis potentiæ cen-
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trum in fundo collectæ (cujus </
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