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

Table of figures

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            <p type="margin">
              <s id="s.002448">
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              Cap. 11. gra­
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              uia in fluido
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              velocitati­
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              bus inæqua­
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              libus ferri
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              debere.</s>
            </p>
            <p type="main">
              <s id="s.002449">
                <emph type="center"/>
                <emph type="italics"/>
              qualibus fiſtularum æqualium altitudinum, æqualibus
                <lb/>
              velocitatibus fluent; at earum moles eamdem proportio­
                <lb/>
              nem habebunt, quàm orificia.
                <emph.end type="italics"/>
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.002450">SInt duæ fiſtulæ AB, & CD eiuſdem altitudinis, ſed
                <lb/>
              orificium infimum B minus ſit alterius orificio
                <lb/>
              D, atque eodem tempore T fluat
                <lb/>
                <figure id="id.010.01.472.1.jpg" xlink:href="010/01/472/1.jpg"/>
                <lb/>
              ex B moles aquæ R, ex D verò ruat
                <lb/>
              moles aquæ S; dico eas paribus ve­
                <lb/>
              locitatibus per fiſtulas excurrere,
                <lb/>
              at moles aquæ R ad S
                <expan abbr="eãdem">eandem</expan>
              pro­
                <lb/>
              portionem habere, quam amplitu­
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              do foraminis B ad ſpatium forami­
                <lb/>
              nis D. </s>
              <s id="s.002451">Quia ob altitudines æquales
                <lb/>
              fiſtularum AB, & CD fluxus aquæ
                <lb/>
              æquales velocitates habent; moles verò
                <expan abbr="earũ">earum</expan>
              æqua­
                <lb/>
              libus velocitatibus, & eodem tempore per orificią
                <lb/>
                <arrow.to.target n="marg634"/>
                <lb/>
              inæqualia B, & D fluunt; igitur, vt amplitudo fora­
                <lb/>
              minis B ad amplitudinem D, ita ſe habet moles aquæ
                <lb/>
              R ad molem S. </s>
            </p>
            <p type="margin">
              <s id="s.002452">
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              Caſtell. de
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              menſura a­
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              quæ curren­
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              tis lib. 1.
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              axiom. 4.</s>
            </p>
            <p type="main">
              <s id="s.002453">His præmiſſis vt velocitates quibus corpora eiuſ­
                <lb/>
              dem grauitatis ſpecificæ aſcendunt, vel deſcendunt
                <lb/>
              in fluido, dignoſcere valeamus primo loco accuratiùs
                <lb/>
              inquirenda eſt ſtructura, & mechanica operatio ſi­
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              phonis, & libræ, quam ſolidum cum fluido collatera­
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              li in quo aſcendit, vel deſcendit, conſtituit. </s>
            </p>
            <p type="main">
              <s id="s.002454">
                <emph type="center"/>
              PROP. CCXXV.
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.002455">
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                <emph type="italics"/>
              Cylindrus ſolidus cum æquali mole aquæ ambientis libram
                <lb/>
              circularem, & ſiphonem tubicum conſtituit, cuius
                <expan abbr="orificiũ">orificium</expan>
                <lb/>
              æquale eſt baſi cylindri ſolidi, & libræ fulcimentum est
                <emph.end type="italics"/>
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