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

Page concordance

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              <s id="s.000890">
                <pb pagenum="175" xlink:href="010/01/183.jpg"/>
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              gnei FE in aqua demerſi ſemper eadem eſt, nec po­
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              teſt vnquam diminui, cùm ſit æqualis vi illius ponde­
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              ris, quod ſufficit ad prohibendum
                <expan abbr="aſcẽſum">aſcenſum</expan>
              prædicto
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              ligno FE (vt conſtat ex Archimede) & è contrà pon­
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              dus incumbentis cylindri aquei IKGF poteſt ſucceſ­
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              ſiuè diminui in infinitum prout eius altitudo IF dimi­
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              nuta fuerit, ſublata nimirum aqna è vaſe ABD. fiat
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              igitur vis ponderis aquæ IG minor energia leuitatis
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              ligni FE, ſcilicèt minor ſit pondere P, quia verò mi­
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              nor vis ſuperari à maiori debet, igitur neceſſariò
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              pondus P deprimet radium libræ NO, ſuperabitque
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              reſiſtentiam diminutæ aquæ IG ſuſpenſæ in altera li­
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              bræ extremitate M, ſcilicèt lignum FE (quod tange­
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              re orificium vaſis HE ſupponebatur) ſursùm aſcen­
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              det in ipſa aqua vi maioris ſuæ leuitatis, ſed hoc eſt
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              falſum, & contra ſenſus euidentiam, numquam enim
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              prædictus cylindius ligneus fundum deſerit, nec ſur­
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              sùm aſcendit; ſi tamen ſemper orificio BC inſiſtat,
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              nec incutiatur vt ad latus fundi baſis transferatur, vbi
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              maior eius baſis pars inſiſtit fundo ſtabili putei, vel
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              cylindrus ipſe tranſuersè flectatur. </s>
              <s id="s.000891">Igitur verum
                <expan abbr="">non</expan>
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              eſt lignum FE exercere nè minimum gradum impe­
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              tus leuitatis. </s>
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              <s id="s.000892">
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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>
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            <p type="margin">
              <s id="s.000893">
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              De inſidét.
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              </s>
              <s id="s.000894">fluido lib. 1.
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              prop. 6.</s>
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            <p type="main">
              <s id="s.000895">
                <emph type="center"/>
              PROP. LXXXV.
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              </s>
            </p>
            <p type="main">
              <s id="s.000896">
                <emph type="center"/>
                <emph type="italics"/>
              Aliter idipſum demonstrare.
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                <emph.end type="center"/>
              </s>
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            <p type="main">
              <s id="s.000897">IIſdem poſitis intelligatur præterea quòd vis leui­
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              tatis prædicti ligni, ſcilicèt pondus P æqualis ſit </s>
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          </chap>
        </body>
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