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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<
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<
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zonti parallelam eſſe.</
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<
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">Licet enim quatenus pars eſt ſphæricæ ſive mundanæ ſuperficiei, mundanam
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autem ſuperficiem dicimus ſphæræ cujuſvis mundo concentricæ, itemq́ue in
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guttula, aut aqua qua corpus aliquod oblitum ſit, hocipſum àverò diſſentiat;
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</
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<
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">tamen nec tantilla hæc quantitas, nec illa copia poſtulata noſtra evertunt. </
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<
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tè aquæ ſuperficiem ſummam, ſecundum Archimedis demonſtrata, pro parte
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mundanæ ſuperficiei adſumere atque hac forma cuncta eſſerre poſſemus, ſed
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quia majore tædio atque adeò nullo Hydroſtatices compendio hoc fieret, ſim-
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pliciter & </
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<
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horizonti parallelam.</
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<
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hedræ horizonti parallelæ puncta ὸμο{ρα}γῆ & </
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ſita.</
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continuatas in mundi centro concurrere; </
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hedras mundanæ ſuperficiei eſſe partes.</
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<
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">Columnæ A B C D hedræ ſumma imaquè ſunto A B, C D horizonti pa-
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rallelæ atque B, C duo puncta ὸμο{ρα}γῆ, ut cum Ptolomæo loquar, connectat re-
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cta B C horizonti perpendicularis, mundi autem centrum E ad quod adjun-
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gantur A E, B E, baſin D C ſecantes in F & </
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figuram F G ipſe D C ſimilem ſimiliterq́, ſitam. </
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eſt nequerectas B C continuatas coïre in centro E, cum A F & </
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currant, neque plana A B, D C mundanæ ſuperficies par-
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tes eſſe: </
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naq́ue A B, C D mundanæ ſuperficiei partes eſſe, quia in
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hydroſtatices praxi hujus differentiæ ratio nulla erit, quæq;
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dem A B G F notari poſſit, etiamſi A B, F G tanquam mun-
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danę ſuperficiei partes aſiumãtur. </
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<
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A B C D curtam pyramidem A B F G uſurpare poſſimus
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atque ita ſuccedentia theoremata enuntiare, tamen eadem
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cauia, quam 6 poſtul. </
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<
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Et profectò tam ineptum fuerit hæc ipſa non admittere,
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quàm poſtulantibus Aſtrologis, terram eſſe mundi centrum, fidem derogare.</
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