Schott, Gaspar
,
Mechanica hydraulico-pneumatica. Pars I. Mechanicae Hydraulico-pnevmaticae Theoriam continet.
,
1657
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Quod quidem
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veriſſimũ
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eſt, cùm aqua infuſa intra vas AB per ſe
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cundam
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infuſionẽ
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, facillimè aſcendat per crus internum
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uſq;
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ad
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curvitatẽ
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C, non reſiſtente aëre; qui aër intra
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ſiphonẽ
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CF compreſ
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ſus cedit aquæ aſcendenti primùm uſq, ad
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C,
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deſcendenti pondere ſuo, pulſo aëre, erumpente per aquam va
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ſis F. </
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>Adde quòd ſi tam altum eſſet vaſculum F, ut aër per ejus
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aquam exitum non inveniret; aſcenderet is per ſiphonem aquæ
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mixtus, prout fieri videmus in canali vitreo quantumvis gracili
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atque longo: ſi enim aquâ aliquòusque eum repleas, & ob
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tùrato utroque orificio invertas, ut aqua ſuperiorem, aër inferio
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rem occupat locum; ſtatim deſcendit aqua, & aſcenditaër, aper
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tâ ſibi vel per medias aquas viâ, ut teſtantur bullæ frequentes in
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ter aquas erumpentes; & qui paulò antè ſuccumbebat aquæ, ei
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dem paulò poſt incumbit aër. </
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Heronis Ma
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china defe
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ctuoſa.
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Heronis er
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ror.
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§. VIII.
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Idem perpendiculum aquæ cadentis non poteſt ſervire
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ſimul attractioni & expulſioni.
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<
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>POrta loco ſæpe citato de ſpiritalibus Cap. VIII. ait, ſe fre
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quenter tentaſſe ut aquam eodem perpendiculo mediante
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elevaret ad majorem altitudinem, quàm perpendiculum erat,
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partim attractione, partim expulſione. </
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>Eum in finem fecit vas
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A, ex quo elevare volebat aquam uſque ad vas B, ad alti
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tudinem pedum centum verbi gratia. </
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>Conſtruxit igitur aliud
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æquale vas C in eodem plano, & aliud DF demiſſius utroque
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pedibus 50. vaſa conſtructa inſtruxit tubis & epiſtomijs, prout
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figura monſtrat. </
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>Hiſce peractis, replevit vaſa C & A aquis, &
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diligenter clauſit utrumque, clauſis etiam eadem diligentia vaſis
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B & DE. </
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>Deinde aperuit tubum ED, ut deſcendente aqua vaſis C
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intra vas DE, traheretur aër ex tubo CK, vaſe B, & tubo
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IH, ſimulque attraheretur aqua vaſis A ſaltem ad L, altitu
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dinem pedum 50; quod & factum fuit. </
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>Sperabat|autem ut aër
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vaſis DF pulſus per tubum EG, intra vas A, expelleret inde </
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