Borelli, Giovanni Alfonso - De motionibus naturalibus a gravitate pendentibus

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

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1
conſtituunt, quæ in ſuo centro grauitatis energiam̨
vniuerſæ ſuæ compreſſionis exercent, verum tameņ
eſt quòd prædicta libra non flectitur, ſed continentèr
renouatur in ſitu horizontali, quandoquidem aquą
eleuata iam non amplius agit contra preſſionem mer
curij CB vt dictum eſt, propterea quòd æquilibratur
cum aqua collaterali ſupra mercurium CB eleuata.

Cap. 2. dę
momentis
grauium in
fluido inna
tantium

PROP. IX.

Corpus aqua grauius in ea demerſum dum deſcendit consti
tuit cum æqualimole collateralis fluidi libram æqualium
radiorum, cuius centrum grauitatis continenter
deſcendende eleuat leuiorem aquam col
lateralem, ſemperque renouatur
horizontalis libra.

HOc præmiſſo intelligatur iam vas aquà plenum
RSTX, & intra eius profunditatem appona
tur priſma marmoreum ABCD, & producantur eius
baſes horizontales AB, & CD

13[Figure 13]
vſque ad G & H, atque planum̨
AD producatur ſurſum, & deor
ſum vſque ad M, & V perpendi
culariter ad horizontem. hic iam
habemus ſiphonem oblongum in ſe
ipſum circumductum, vt in prę
cedenti propoſitione expoſitum fuit, quia aqua BM
GHVC ambit priſma ſupernè, lateraliter, & infernè,
nec moueri poteſt deſcendendo priſma AC quin aqua

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