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

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1
pus
T ad V, ita erit moles aquæ R ad S.
Ibidem.
Cap. 11. gra­
uia in fluido
velocitati­
bus inæqua­
libus ferri
debere.
PROP. CCXXIII.
Si duæ fistulæ inæqualiter altæ habuerint orificia æqualia,
atque ex eis egrediantur moles aquæ æquales, tempora
effluxuum habebunt ſubduplicatam proportionem reci­
procam altitudinum fistularum.
SIt altitudo fiſtulæ AB maior, quàm CD, & eorum
orificia B, D æqualia, & ex B egrediatur moles
aquæ R tempore T, ex D verò profluat moles aquæ
S æqualis ipſi R tempore V, & vt priùs, ſit BE media
proportionalis inter AB, &
161[Figure 161]
CD; dico tempus V ad T ean­
dem
proportionem haberę,
quam EB ad CD, ſit moles aquæ
X illa, quæ defluit ab orificio
D eodem tempore T, igitur

vt moles aquæ R ad X, ita erit
altitudo EB ad CD, poſteą
quia ab eodem oriſicio D fi­
ſtulæ CD exeunt duæ moles
aqueæ X, & S temporibus T,

& V, igitur vt tempus V ad T, ita ſe habet moles aquæ
S ad X: ſunt verò moles aquæ R, & S ex hypotheſi,
æquales, igitur ad eamdem molem X eamdem pro­
portionem habent; eſt verò EB ad CD vt R ad X;
atque V ad T vt S ad X; igitur altitudo EB ad CD ean­
dem
proportionem habebit, quam tempus V ad T.
Prop. 221.
Prop. 222.
PROP. CCXXIV.
Duæ moles aquæ eodm tempore egredientes ex orificijs inæ-

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