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

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              <s id="s.000972">
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                <lb/>
              ſatur, conſtipaturque, & primum vocatur augmen­
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              tum grauitatis extenſiuum, reliquum verò
                <expan abbr="intenſiuũ">intenſiuum</expan>
              .
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              </s>
              <s id="s.000973">Regula verò, qua menſurari poteſt gradus prædictæ
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              grauitatis commodè deſumitur à vi contraria, quæ
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                <arrow.to.target n="marg246"/>
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              depreſſionem eius prohibere poteſt, & hic
                <expan abbr="notandũ">notandum</expan>
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              eſt minimè nos ſollicitos eſſe de velocitate motus,
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              qua deorsùm eadem grauia feruntur, ſed tantummo­
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              dò conſiderare vim, & conatum ponderis eius, qui
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              in libra à vi oppoſiti
                <expan abbr="æquipõdij">æquipondij</expan>
              præcisè menſuratur.
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            </p>
            <p type="margin">
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              Vis compri­
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              mens exten­
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              ſiuè augetur
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              multiplicata
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              mole corpo­
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              ris.</s>
            </p>
            <p type="margin">
              <s id="s.000975">
                <margin.target id="marg244"/>
                <expan abbr="Intẽſiuè">Intenſiuè</expan>
              ve­
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              rò conſtip­a
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              ta, & conden
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              ſata mate­
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              ria.</s>
            </p>
            <p type="margin">
              <s id="s.000976">
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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.000977">
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              Gradus præ­
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              dictæ graui­
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              tatis menſu­
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              ratur à vi
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                traria</expan>
              , quæ
                <lb/>
                <expan abbr="depreſſionẽ">depreſſionem</expan>
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              eius prohi­
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              bere poteſt.</s>
            </p>
            <p type="margin">
              <s id="s.000978">
                <margin.target id="marg247"/>
              Hic no agi­
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              tur de velo­
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              citate
                <expan abbr="deſcẽ-ſus">deſcen­
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                ſus</expan>
              , ſed de vi
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                <expan abbr="cõpreſſiua">compreſſiua</expan>
              .</s>
            </p>
            <p type="main">
              <s id="s.000979">
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                <emph type="italics"/>
              SVPPOSITIO IX.
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                <emph.end type="center"/>
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            <p type="margin">
              <s id="s.000980">
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              Vis ſursùm
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                <expan abbr="impellẽs">impellens</expan>
              quę
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              leuitas voca­
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              tur augeri po
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              teſt extenſi­
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              uè multipli­
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              cato eodem
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              corpore le­
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              ui.</s>
            </p>
            <p type="main">
              <s id="s.000981">NOn ſecùs quando agitur de vi, & energia, quą
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              corpora, quæ leuia appellantur ſursùm moue­
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              ri nituntur, quæritur non velocitas, ſed vis, quæ
                <lb/>
              ſursùm impellit, quæ leuitas appellari ſolet, & hæc
                <lb/>
              quoque duplici modo augeri poteſt, aut extenſiuè,
                <lb/>
              aut
                <expan abbr="intẽſiuè">intenſiuè</expan>
              , ſcilicèt aut
                <expan abbr="multiplicãdo">multiplicando</expan>
              molem
                <expan abbr="eiuſdẽ">eiuſdem</expan>
                <lb/>
              corporis leuis, vt ſphæra aeris palmaris octies
                <expan abbr="maio-rẽ">maio­
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                rem</expan>
                <expan abbr="leuitatẽ">leuitatem</expan>
              habebit,
                <expan abbr="quã">quam</expan>
              ſphæra
                <expan abbr="eiuſdẽ">eiuſdem</expan>
              aeris ſemipal­
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              maris, propterea quod vis illa leuitatis tantumdem
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              multiplicatur, quantum maſſa eius corporea exten­
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              ditur, cùm omnes partes eiuſdem aeris æquè leues
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              ſint, & æquè raræ, requiraturque vis contraria pro­
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              hibens illius aſcenſum octiès maior quam in huius
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              aeris minori mole requiratur. </s>
              <s id="s.000982">Secundo modo auge­</s>
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            <p type="main">
              <s id="s.000983">
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              ri poteſt leuitas expandendo, & rarefaciendo
                <expan abbr="ſubſtã-">ſubſtan-</expan>
              </s>
            </p>
          </chap>
        </body>
      </text>
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