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.000653">
                <pb pagenum="130" xlink:href="010/01/138.jpg"/>
                <arrow.to.target n="marg162"/>
                <lb/>
              ciliùs eleuari, igitur omninò neceſsè eſſet vt fumus
                <lb/>
              in prædicto vacuo ſpatio aſcenderet ſursùm, veluti
                <lb/>
              eius natura exigit, & è contrà eſſet impoſſibile vt
                <lb/>
              deorsùm deprimeretur, & caderet, vt virgulæ deci­
                <lb/>
              dentes aquæ fontium flectuntur deorsùm; quia verò
                <lb/>
              hoc experientiæ repugnat non poterit dici, quòd fu­
                <lb/>
              mus ſit leuis, ſed è contrà grauis erit. </s>
              <s id="s.000654">Cùm verò iņ
                <lb/>
              aere idem fumus ſursùm aſcendat,
                <expan abbr="dicẽdum">dicendum</expan>
              eſt quòd
                <lb/>
              ab aere ambiente grauiori in ſpecie, quàm ſit fumus
                <lb/>
              iuxtà leges mechanicas libræ aer
                <expan abbr="premẽs">premens</expan>
              per extru­
                <lb/>
              ſionem ſursùm fumum minùs grauem expellit. </s>
            </p>
            <p type="margin">
              <s id="s.000655">
                <margin.target id="marg162"/>
              Cap. 4. poſi­
                <lb/>
              tiuam leui­
                <lb/>
              tatem noņ
                <lb/>
              dari.</s>
            </p>
            <p type="main">
              <s id="s.000656">
                <emph type="center"/>
              PROP. LXIII.
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000657">
                <emph type="center"/>
                <emph type="italics"/>
              Figuram pyramidalem flammæ lucernæ non ſuadere eam à
                <lb/>
              vi leuitatis ſursùm impelli.
                <emph.end type="italics"/>
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000658">VErùm, quod ad formam pyramidalem flammæ
                <lb/>
              lucernæ pertinet, non videtur, quòd eius figu­
                <lb/>
              ra conica neceſſariò perſuadeat, & conuincat flam­
                <lb/>
              mam ſursùm ſponte ſua, & propria virtute leuitatis
                <lb/>
              aſcendere, nam ſiue per extruſionem ambientis flui­
                <lb/>
              di violenter, ſiuè ſponte à vi leuitatis ſursùm moue­
                <lb/>
              ri ſupponamus, retinere æquè benè poſſet eamdem̨
                <lb/>
              conicam
                <expan abbr="figurã">figuram</expan>
              , vt inferiùs oſtendemus. </s>
              <s id="s.000659">Præterea ſi
                <lb/>
              vera cauſa figuræ pyramidalis flammæ lucernæ eſſet
                <lb/>
              eius leuitas poſitiua, deberet eadem leuitas poſitiua
                <lb/>
              eumdem effectum producere in reliquis omnibus
                <lb/>
              corporibus fluidis paritèr ab ipſa impulſis, ſi tamen
                <lb/>
              reliqua ſint paria, ſcilicèt fumus non ſecùs ac flam-</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>