Borelli, Giovanni Alfonso - De motionibus naturalibus a gravitate pendentibus

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

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Contram ſupe-
rius expoſitam
doctrinam de-
nuo aduer-
ſarius inſur-
git,

Cap. 5. de ae-
ris grauitate
æquilibrio,
ſtructura, &
vi elaterią
eius.

PROP. CIV.

HVic difficultati reſpondetur, quòd, vt multotiès
inſinuatum eſt, nulla alia de cauſa fluida cor-
pora circa tellurem ſphæricè contornantur, niſi prop-
tèr eorum æquilibrium, ſcilicet quia omnes eius par-
tes æquali niſu vim faciunt tendendo deorsùm, &
poſtquam à ſoliditate terræ ſubiectæ eius progreſ-
ſus deorsùm impeditur niſu reflexo veluti in ſiphone
viciſſim ſe mutuo impellunt quoque partes fluidi, vel
ſolidi eleuatæ ſursùm, itaque in caſu noſtro, concipi
debet nedùm columna aerea SAC, ſed etiam alia ei
æqualis aerea columna SG, quæ infernè per EC re-
flectatur, & ſursùm impellat digitum ſuſtentantem
vitrum æquali niſu, ac ipſa ſupernè comprimitur à

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