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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                dere</expan>
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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.</s>
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              Cap. 4. poſi­
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              tiuam leui­
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              tatem noņ
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              dari.</s>
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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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              <s id="s.000715">VIdeamus modò an ex accenſione vini ſpiritus
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              deducatur aſſertio leuitatis poſitiuæ. </s>
              <s id="s.000716">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. </s>
              <s id="s.000717">Cùm igitur ab omnibus poroſita­
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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 </s>
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