Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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Concluditur
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quod ex ſi
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gura acumi
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nata flammæ
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lucernæ non
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euincitur
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hanc à vi le
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uitatis
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Præterea all
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quæ flammæ
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candelæ ſunt
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rotundæ, &
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flammæ ca
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mini ſunt al
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terius figu
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ræ.</
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Cap. 4. poſi
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tiuam leui
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tatem noņ
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dari.</
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PROP. LXX.
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Flammain ſpiritu vini accenditur extra, & longè ab ipſo
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ſpiritu, & ideò poteſt exprimi ſursùm
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ab ambiente aere.
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<
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">VIdeamus modò an ex accenſione vini ſpiritus
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deducatur aſſertio leuitatis poſitiuæ. </
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<
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">Et hic
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denuò dico, quòd flamma ſpiritus vini non eſt actu
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accenſa in poris internis prædicti liquoris, ſed ſicuti
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de fumis lignorum dictum eſt, educitur è ſpiritus vi
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ni fiuore fumoſa quædam maſſa rariſſima, quæ in po
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roſitatibus fluoris cùm retineri nequeat, ruptis car
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cerum repagulis ingenti impetu per orificia poroſa
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vndique fluorem ambientia eructat, & poſtmodum̨
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flammam concipit, accenditurque in aliqua ſenſibi
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li diſtantia à dicto fluore: hoc confirmatur exemplo
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illius effluuij fumoſi, egredientis ab aliqua titionis
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poroſitate, quod poſtmodum accenditur in diſtan
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tia vnius digiti ab ipſo ligno, & ſpeciem præbet flu
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oris bitumino ſi lateralitèr defluentis, qui in aerę
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ignem concipiat. </
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<
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tibus ſpiritus vini, & cuiuslibet materiei accenſibi
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lis vndequaque ſursùm, deorsùm, & lateralitèr fu
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moſæ exhalationes egrediantur, quæ poſtea in ipſo
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aere aperto inflammentur, & accendantur, non vi
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detur difficile vt aer poſſit infra flammam accenſam,
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& lateralitèr eam comprimere, & proinde expreſſio
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ne facta eam ſursùm impellere: &
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eſt, quòd </
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