Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

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1
do
tumidum monticulum.
Verùm minus grauis mercu­
rij
moles in ſtrictiori fiſtula contenti faciliùs ſuſpen­
ditur
, quàm grauior moles eiuſdem latiorem fiſtulam
occupans; ergo faciliùs mercurius ab interna ſtrictio­
ris
fiſtulæ ſuperficie ſeparatur, quam ab interna latio­
ris
fiſtulæ ſuperficie, & proinde altius, vel ſaltem non
minùs
altè ſeparari deberet mercurij monticulus GF
quàm
CA. poſtea aer perimetris in­
132[Figure 132]
ternis
vtriuſque fiſtulæ adhærens æ­
què
impeditur, & propterea æquè
aeris
preſſiones debilitatę viribus æ­
qualibus
ſubiectum mercurium con­
primere
debent; at intermediæ par­
tes
aeris versùs axes cylindrorum exiſtentes inæqua­
les
vires compreſſiuas habebunt, quòd inæquali­
tèr
à ſuperficiebus internis vaſorum recedunt, quare
aer
incumbens mercurio in A maiori vi eum compri­
met
, ac contundet, quàm aer incumbens mercurio
in
G, igitur validiori vi retundetur monticulus tumi­
dus
BAD quàm EGL, & ideo altior erit monticulus
mercurij
EGL, quàm BAD; ſed hoc eſt falſum, multò
enim
maior eſt altitudo CA quàm FG, ergo aeris vis
compreſſiua
nullam inæqualitatem ſortitur, vel non
talis
eſt vt tàm inſignes varietates producere valeat,
ſcilicèt
non eleuarentur argines illi aquei ęquè ab ae­
re
compreſſi, ac reliqua aquæ ſuperficies horizonta­
lis
.
Præterea in vacuo Torricelliano aer ibi non exi­
ſtens
non poſſet eleuare argines aqueos parietibus fi­
ſtulæ
adhęrentes; vel ſi ibidem remanet minima aeris

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