Schott, Gaspar, Mechanica hydraulico-pneumatica. Pars I. Mechanicae Hydraulico-pnevmaticae Theoriam continet. , 1657

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1
vas AB, & attrahetur alia aqua,
eritque aër HI inter aquam
GH, & IM.
Iterum remove vas
AB, & ingredietur per os G alius
aër, ſequeturque aquam.
Quo
facto, ſi vas iterum admôris, di­
ctamque
operationem repetive­
ris; aſcendent tandem aqua &
aër miſti inter ſe, vſque ad vas D,
illudque replebunt, antequam ef­
fluat tota aqua vaſis C, quod ob
id minus eſſe debet quam vas D.
Experimen­
tum Porta
ad aquam
elevandam
vltra perpen­
diculi
alti­
tudinem.
19[Figure 19]
Procedendum eſt autem
valde cautè in hoc negotio, nè
nimium aéris ingrediatur per os
G, & levitate ſua ſurſum ten­
dens pellat modicam aquam
antea in tromiffam, repleatque totum canalem GK, ſicque de­
ſtruatur continuitas aquæ & aëris intra canalem: hoc enim ſi
fieret, non repleretur vas D, niſi poſt longiſſimum tempus, &
multas operationes, deberetque ſæpius repleri vas C.
Nun­
quam præterea tantum aquæ ſimul continere debet canalis
GK, vt ejus perpendiculum ſuperet perpendiculum aquæ ca­
n alis EF.
Ex hac praxi deducit Porta modum mirabilem, &
omnibus antiquis ignotum, ut ipſe ait, elevandi per ſiphonem
inverſum aquam è montis radice ad ejus verticem; quem mo­
dum afferam infrà Protheoria IV. cap. 2. Propoſit. 12. ex
quo etiam loco meliùs intelligetur hoc
præſens Experimentum.

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