Borelli, Giovanni Alfonso - De motionibus naturalibus a gravitate pendentibus

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

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1
ſeruatur ſimilis ei, qui propè caminum percipitur.

Cap 4. poſi
tiuam leui
tatem noņ
dari.

Cap. 4. poſi
tiuam leui
tatem noņ
dari.

Hæc experi
entia, & ra
tio eius ap
plicatur flanm
mæ camini
aſcendentis.

Ratio quare
circa lucer
næ flammam
non percipi
tur ventus
ſicuti in ca
mino.

Cap. 4. poſi
tiuam leui
tatem noņ
dari.

PROP. LXII.

Ignem non à leuitate, ſed ab extruſione ambientis aeris aſcen
dere, euincitur ex deſcenſu fumi in vacuo
Torricelliano.

SEd quòd reuerà ignis mo

53[Figure 53]
ueatur ſursum per extruſi
onem ambientis aeris, non autem
aſcendat ſponte propria vir
tute euidentiſſimè percipitur
ex hoc meo experimento, quod
Florentię Sereniſſimo Leopol
do Cardinali Mediceo commu
nicaui, comprobatumque fu
it in Academia Experimentali
Medicea, & demum Exteris
per Epiſtolas diuulgatum fuit.

Sit vas vitreum AFG, cuius
longitudo EF duobus cubitis
maior ſit, habeatque annexam
ampullam vitream CEM, ſit
que incuruata eius extremitas HFG, atque duæ eius
extremitates A, & G ſint perforatæ, & apertæ, & pri
ùs ſtrictè obſerato, duplici veſica ſuilla, infimo orificio
G repleatur vas vniuerſum hydrargyro infuſo per ſu
premum os AB, poſtea pilula aliqua D ex bitumine
aliquo atri coloris operculo ex bractea ferrea filo

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