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

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            <p type="main">
              <s id="s.000659">
                <pb pagenum="131" xlink:href="010/01/139.jpg"/>
              ma corpus fluidum, & rarum eſt, cuius continentèr
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                <arrow.to.target n="marg163"/>
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              vna pars poſt aliam generatur, & eructatur à po­
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              ris eiuſdem titionis, pariterque fumum leuitatem̨
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              poſitiuam habere, & exercere
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              non minùs,
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              quàm flamma habet, igitur neceſſariò fumus aſcen­
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              dens, & digrediens à titione deberet formam pyra­
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              midalem acquirere ſimilem ei, quam flamma lucer­
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              næ habet, deberetque paritèr in acumen ſubtile ſu­
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              periùs deſinere, quod profectò eſt falſum, & contra
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              ſenſus euidentiam, proſequitur enim fumus ſuum̨
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              iter longo tractu ſursùm abſque eo quòd in acumen
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              reducatur. </s>
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            <p type="margin">
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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>
            </p>
            <p type="main">
              <s id="s.000661">Id ipſum continget, ſi fiſtula aliqua aer in fundo
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              aquæ inſuffletur,
                <expan abbr="conſpiciẽtur">conſpicientur</expan>
              enim eleuari innume­
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              ræ ampullæ aereę, quæ ab inuicem ſeparantur abſ­
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              que eo quòd pyramidalem figuram acquirant, licèt
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              aer non minùs quàm flamma leuis reputetur, & ab in­
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              trinſeco principio ſursùm moueri credatur, cùmque
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              vna, & eadem cauſa non poſſit diuerſos effectus pro­
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              ducere, concedant neceſsè eſt, figuram, quam in
                <expan abbr="flã-ma">flam­
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                ma</expan>
              obſeruamus diuerſam à figura fumi, & aeris per
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              aquam aſcendentis ab alia cauſa longè diuerſa de­
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              pendere, non autem à prædicto principio intrinſeco
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              leuitatis. </s>
            </p>
            <p type="main">
              <s id="s.000662">Et profectò ſi attentè perpendamus fumi, & flam­
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              mæ conſiſtentias, valdè inter ſe differre reperiemus,
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              licèt ambo ſint corpora rara, & fluida. </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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