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

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            <p type="main">
              <s id="s.000674">
                <pb pagenum="135" xlink:href="010/01/143.jpg"/>
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              <s id="s.000675">
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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="margin">
              <s id="s.000676">
                <margin.target id="marg167"/>
              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.000677">
                <emph type="center"/>
              PROP. LXVI.
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              </s>
            </p>
            <p type="main">
              <s id="s.000678">
                <emph type="center"/>
                <emph type="italics"/>
              Fumi non ab impetu quo eructantur ad altisſimas regiones
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              perduci poſſunt, ſed minùs graues redditi ab igniculo­
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              rum commixtione exprimi ab ambiente aere
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              poſſunt.
                <emph.end type="italics"/>
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000679">ET notandum eſt, quòd abſque exhalationibus
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              igneis non poſſent ad inſignem altitudinem̨
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              fumi particulæ eleuari, quia licèt impetus ex ſui na­
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              tura, quo à ligni poroſitatibus eructantur, vim per ſe
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              haberet ad eas longiùs eleuandas, nihilominùs, quia
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              huiuſmodi impetus facillimè debilitatur extingui­
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              turque à particulis aeris quieſcentibus, vel prædicto
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              motu priuatis, quibus occurrunt fumi, non poſſet eius
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              aſcenſus longiùs propagari, ſed citò extingueretur.
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              </s>
              <s id="s.000680">Vlteriùs ſi re vera fumi à ligno eructati virtute im­
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              petus
                <expan abbr="præcõcepti">præconcepti</expan>
              ad
                <expan abbr="tãtã">tantam</expan>
                <expan abbr="altitudinẽ">altitudinem</expan>
                <expan abbr="aſcẽderẽt">aſcenderent</expan>
              ,
                <expan abbr="nõ">non</expan>
                <expan abbr="au-tẽ">au­
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                tem</expan>
              ob
                <expan abbr="ſocietatẽ">ſocietatem</expan>
              ignearum
                <expan abbr="exhalationũ">exhalationum</expan>
              , ſequeretur, q̨
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                <expan abbr="nõ">non</expan>
              ſemper fumus ad
                <expan abbr="eãdẽ">eandem</expan>
              atmoſphærę ſummitatem
                <lb/>
              aſcenderet, is enim qui per poros laterales ligni e­
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              greditur, impetum proiectitium tranſuerſalem acqui­
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              reret, & ideò proſequi ſuum motum deberet per pla­
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              num horizontalem, neque ab incepto itinere tanto­
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              pere deuiaret: ſimiliter fumus ille, qui ab infima par­
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              te titionis in aere ſuſpenſi exit, impetum acquirit ten­
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              dendi deorsùm, non ſursùm, proindeque deberet di­
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              rectè profluere vſque ad pauimentum, & deinceps
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              non poſſet ad ſu premam aeris regionem perduci, </s>
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          </chap>
        </body>
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    </archimedes>
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