Casati, Paolo, Terra machinis mota : dissertationes geometricae, mechanicae physicae hydrostaticae

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1quàm 14 ad 11, minorem verò quàm 284
ad
223: igitur vt 14 ad 11 ita 1/6 ad (11/14) maio­
rem
vero; & vt 284 ad 223, ita 1/6 ad (223/1704) mi­
norem
vero.
Inuentæ quantitates (11/14) & (223/1704) re­
ducantur
ad eandem denominationem, &
ſunt
(78744.18732/143136), differentia autem eſt 12 parti­
cularum
; & ſumpto medio Arithmetico ſo­
liditas
cylindruli dati eſt (18738/143136), hoc eſt (3123/23856). Si
igitur
medulla ſambucea, cuius ſoliditas eſt
dig
. (3123/23856) habet pondus gran. 3, medullą,
cuius
ſoliditas eſſet dig. (40 5/27), haberet pondus
gran
. 920. Ignis itaque leuitas in aëre ſi tan­
ta
fuerit, quanta eſt medullæ ſambuceæ gra­
uitas
, erit gran.——920, quorum 5425 eſt
grauitas
aquæ ſecundum molem æqualis.

Ergo
ſi aquæ grauitas in aëre 5425 dat ignis
in
aëre leuitatem——920, aquæ grauitas 5 1/3
dat
ignis leuitatem——(4906/5425); quæ ſi addatur
leuitati
aëris in aqua——5 1/3, erit leuitas ignis
in
aquâ ſaltem——(6 258/1085). Et id quidem, Gul­
dine
, tuà methodo: quanquam ægerrimè
mihi
perſuadeo tantulam leuitatem eſſe igni
tribuendam
.

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