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

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              <s id="s.001156">
                <pb pagenum="225" xlink:href="010/01/233.jpg"/>
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              mercurius eam attingat, propterea quòd partes illæ
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              aereæ, quæ priùs ſummè dilatatæ erant in amplo ſpa­
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              tio inani in ſummitate fiſtulæ, poſtea reſtricto ſpatio
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              ob mercurij aſcenſum denuò condenſantur, & proin­
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              dè mirum non eſt veſicam cyprinam ab aere eam am­
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              biente denſiori, quàm ſit aer intra veſicam
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              ,
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                <expan abbr="compreſſionẽ">compreſſionem</expan>
              pati debere, & proinde detumeſcere. </s>
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              Cap. 5. de ae
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              ris grauitate
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              æquilibrio,
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              ſtructura, &
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              vi elateria
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              eius.</s>
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            <p type="main">
              <s id="s.001158">Quando verò ſubdit, quod aer intra fiſtulam im­
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              miſſus dum mercurius eleuatus eſt ad prædictam al­
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              titudinem cubiti vnius, & quadrantis proximè,
                <expan abbr="ſursũ">ſursum</expan>
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              fertur tanto impetu, vt ſupremum fiſtulæ fundum, &
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              baſis diffringatur; diſſiliatque, & quia ab exceſſu exi­
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              gui ponderis tantus impetus creari non poteſt, hinc
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              deducit non poſſe à cylindro aeris ambiente, & ab
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              eius
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              vllo pacto impelli neque mercurius, ne­
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              que aer in prædicta fiſtula. </s>
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              PROP. CVII.
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              Aer in fiſtula Torricelliana adueniens nedùm pondere, ſed
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              vi elaſtica, & impetu in motu acquiſito diffringere
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              fundum ſupremum fistulæ poteſt.
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              </s>
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              <s id="s.001161">HVic difficultati occurro
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              quòd mer­
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              curius in fiſtula ſursùm impellitur ab aere ex­
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              terno non vnica, ſed triplici vi, ponderis nimirum,
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              virtutis elaſticæ ad modum machinæ, & impetus in
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              motu acquiſiti: ſed præcipua, & inſignis actio in ca­
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              ſu noſtro impetui tribui debet. </s>
              <s id="s.001162">Quia poſtquam è
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              fiſtula cum mercurio extante in aere pendula effluit </s>
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