Schott, Gaspar
,
Mechanica hydraulico-pneumatica. Pars I. Mechanicae Hydraulico-pnevmaticae Theoriam continet.
,
1657
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Propoſitio XII.
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Siphone inverſo aquam ex montis radice ad
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ejus verticem elevare.
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>MIrabilis eſt ſequens modus, & antiquis minimè cognitur,
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imò ab omnibus pro impoſſibili habitus, inquit Porta:
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omnes enim putârunt, ſi in ſiphonis inverſi collo ſeu curvatu
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ra ſuprema foramen fieret, & vel minimum aëris ingredere
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tur, fore ut ſiphonis aqua diſcontinuaretur, & aqua diviſa per
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utrumque ſiphonis crus hinc atque inde delaberetur, totuſque
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ſiphon evacuaretur. </
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>Contrarium monſtrat ſequens modus,
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quem præſcribit Joannes Baptiſta Porta lib. 2. Spirital. cap. 13.
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& 14. in hunc ſenſum.
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Vide præ
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figuram
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99.
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vel
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100.</
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Aquam è
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montis ra
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dice ad ver
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ticem ele
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vare.
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>Sit ut antea mons A, in ejuſque radice fons B, cujus
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aqua ſit elevanda uſque ad verticem D. </
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>Fiat ſiphon inverſum
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inæqualium, ut antea, crurium BDE, cujus orificium B ſit
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immerſum fonti, orificium verò E vel liberum omninò ſit;
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vel deſinat in piſcinam ſubjectam. </
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>Habebit autem res tantò
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meliorem ſucceſium, quantò longius fuerit crus DE, quàm
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alterum DB. </
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>Fiat deinde infra collum ſiphonis, ubi D, re
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ceptaculum aquarum H, undique clauſum quàm diligentiſ
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ſimè, ſuoque epiſtomio I inſtructum, ex quo depromi aqua
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poſſit. </
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>In hoc receptaculum derivetur ex collo ſeu curvatum
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ſiphonis tubulus G, habens claviculam volubilem, ſitque tu
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bulus arctiſſimè adferruminatus & ſiphonis collo, & recept
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culi operculo priùs perforatis. </
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>His factis, repleatur per infun
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dibulum D ſiphon BDE, obſtructis priùs orificijs B & E
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eoque repleto obturetur foramen D, & aperiatur ſimul utrum
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que orificium B & E; dumque per tubum fluit aqua, & ex E
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erumpit; aperiatur modiciſſimè, & momentaneâ quaſi motu
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la clavicula tubuli G; ſtatimque per dictum tubulum deſcen
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det modica aqua intra receptaculum H, aſcendetque modi
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cus aër intra ſiphonem, ibique aquæ miſtus delabetur unà cum
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ipſa per crus DE, & per os E erumpet. </
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