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

Table of figures

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s id="s.000680">
                <pb pagenum="136" xlink:href="010/01/144.jpg"/>
                <arrow.to.target n="marg168"/>
                <lb/>
              quæ omnia falſa ſunt, & contra ſenſus euidentiam;
                <lb/>
              Fatendum igitur eſt, ab igneis particulis fumum ra­
                <lb/>
              refactum eleuari ab impulſu grauioris aeris ambien­
                <lb/>
              tis per expreſſionem. </s>
            </p>
            <p type="margin">
              <s id="s.000681">
                <margin.target id="marg168"/>
              Cap. 4. poſi­
                <lb/>
              tiuam leui­
                <lb/>
              tatem noņ
                <lb/>
              dari.</s>
            </p>
            <p type="main">
              <s id="s.000682">
                <emph type="center"/>
              PROP. LXVII.
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000683">
                <emph type="center"/>
                <emph type="italics"/>
              Flamma eſt fumus accenſus magis rarefactus, qui ab aere
                <lb/>
              ambiente velocisſimè ſursùm exprimitur.
                <emph.end type="italics"/>
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000684">PErcepta iam & declarata fumi
                <expan abbr="cõſtructione">conſtructione</expan>
              per­
                <lb/>
              pendere modò iuuat metamorphoſim, quam̨
                <lb/>
              patitur quando inflammatur. </s>
              <s id="s.000685">Debemus igitur con­
                <lb/>
              cipere minimas particulas ſulphureas in fumo con­
                <lb/>
              tentas, cùm inflammantur, maximè dilatari, rarefieri,
                <lb/>
              & vehementiſſimè agitari, & in hoc conſiſtere eius
                <lb/>
              accenſionem, ſed granula illa aquea, & terrea eiuſ­
                <lb/>
              dem fumi, quæ ex ſua natura accenſibilia non ſunt,
                <lb/>
              poterunt tantummodò rarefieri multò magis, quàm
                <lb/>
              priùs. </s>
              <s id="s.000686">iam à prædicta ferè
                <expan abbr="momẽtanea">momentanea</expan>
              rarefactione,
                <lb/>
              agitatione, & accenſione ſubſequitur conſequen­
                <lb/>
              tèr ſplendida, & luminoſa apparentia flammæ. </s>
              <s id="s.000687">Ad
                <lb/>
              hæc aeris ambientis grauitas, licèt exigua ſit, ſupe­
                <lb/>
              rabit nihilominùs notabili exceſſu minimum, & in­
                <lb/>
              ſenſibile pondus ipſius flammæ multò, & multò ma­
                <lb/>
              gis, quàm ſuperauerat pondus
                <expan abbr="præcedẽtis">præcedentis</expan>
              fumi:hinc
                <lb/>
              neceſſariò flamma ab ipſo aere per extruſionem ſur­
                <lb/>
              sùm impelletur ineffabili velocitate. </s>
              <s id="s.000688">Et hìc plurima
                <lb/>
              aduertenda ſunt. </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>