Borelli, Giovanni Alfonso - De motionibus naturalibus a gravitate pendentibus

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

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1

Cap. 3. flui
dum in ſuo
toto quie
ſcens pon
derat.

PROP. XV.

Alia ratione, & experimento probare compresſionem par
tium aquæ, & rerum in ea contentarum à pon
dere ipſiuſmet aquæ.

SIt fiſtula vitrea RVX vndique clauſa præterquam
in ſupremo orificio R, hæc verò aqua repleatur,
& in ea ampullula vitrea AD immerga

19[Figure 19]
tur ſitque ea plena aere, & eius pars ver
ſus infimum orificium apertum D graui
or ſit, ad hoc vt ampullula AD ſemper
inuerſo ſitu in ipſa aqua perſiſtat. in hac
machina obſeruatur quòd vexica vitrea
AD quò magis deprimitur infra ſupre
mam aquæ libellam, vel potiùs ipſamet
aqua altiùs infunditur, & eleuatur, tune
eò magis aer in ampulla contentus con
denſatur, atque in minori ſpatio conſtrin
gitur, & hoc fenſu ipſo patet dum aquą
ingreditur per orificium D atque colli
ampullæ particulam aliquam implet; quod verò hu
iuſmodi aeris reſtrictio ſit effectus ponderis aquæ ſu
premæ comprimentis ſenſu ipſo dignoſcitur, nam quò
magis aquæ ſuprema ſuperficies S eleuatur versùs R
ſemper magis, ac magis ſucceſſiuè aeris moles præ
dicti tubuli conſtringitur ſubintrando nimirùm aqua
magis à C versùs B. Quòd verò hoc dependeat à con
preſſione multiplicati ponderis aquæ ſubleuatæ alià

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