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

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ratio vetat, quin pondere ſuo comprimat infimam ſu­
biectam laminulam eiuſdem fluidi quæ fundo vaſis
contigua eſt, quandoquidem minimè poſſunt ſupre­
mæ fluidi partes fundum vaſis comprimere abſquę
eo quod impellant, & ſtringant infimam eiuſdem flui­
di laminulam, cùm actio in diſtanti fieri non poſſit, ſed
contactu quodam remotiores impellendo eis conti­
guas ſubiectas partes, & hæ ſubſequentes ſerie qua­
dam ordinata quouſque fundum comprimant.
Cap. 3. flui­
dum in ſuo
toto quie­
ſcens pon­
derat.
PROP. XIII.
Aqua vaſis fundum çomprimit ſua grauitate.
SEd hoc euidentius ſic patebit, ſit fiſtula vitrea A
NO perpendiculariter ad horizontem erectą,
repleaturquè aqua, ſeù quolibet alio fluido cor­
pore, & ductis innumeris planis horizonti æquidiſtan­
tibus
ſubdiuidatur vniuerſum fluidum iņ
17[Figure 17]
laminas gracillimas ſeù membranas æquè
altas AB, BC, CD, DE, EF, FM, & MN. &
primò ſi verum eſt, vt aduerſarij credunt
aquam in ipſamet aqua collocatam non gra­
uitare, igitur ſuprema laminula aquea AB
prorſus non comprimet ſubiectam membra­
nam
aqueam BC, ſcilicet vim nullam ſuper eam exer­
cebit (hoc enim grauitatis nomen indicat) neque eam
deorſum impellet perinde ac ſi aqua ſuprema AB non
adeſſet, proindeque hæc non augebit grauitatem in­
ferioris laminæ BC, aliàs ſuprema aqua AB pondera-

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