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

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s id="s.000351">
                <pb pagenum="74" xlink:href="010/01/082.jpg"/>
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                <lb/>
                <figure id="id.010.01.082.1.jpg" xlink:href="010/01/082/1.jpg"/>
                <lb/>
              dem verificetur, dum aqua
                <lb/>
              in prædicto vaſe contenta
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              prorsùs quieſcit, ſaltèm̨
                <lb/>
              quoad ſenſus
                <expan abbr="apparentiã">apparentiam</expan>
              ,
                <lb/>
              ſi poſtea aqua agitetur, vt
                <lb/>
              nimirùm pars EF deſcen­
                <lb/>
              dat verſus vaſis fundum, reliqua verò pars FG, ſur­
                <lb/>
              sùm aſcendat motu quodam vertiginoſo, fi verum̨
                <lb/>
              eſt, quòd motus aſcenſiuus ipſius aquæ indicat de­
                <lb/>
              fectum grauitatis eius, tunc perſeuerante dicto mo­
                <lb/>
              tu aſcenſus minui deberet pondus totius vaſis AC,
                <lb/>
              & propterea libra HL non quieſceret, ſed deprime­
                <lb/>
              retur pondus R, quod tamen repugnat ſenſus eui­
                <lb/>
              dentiæ; non igitur ex eo quòd aqua mouetur in ali­
                <lb/>
              quo vaſe carebit propria, & natiua grauitate, ſicuti
                <lb/>
              homo aſcendens per ſcalam extremo termino libræ
                <lb/>
              alligatam æquali momento libram premeret, ac ſi
                <lb/>
              idem homo in ſcala quieſceret, quia nimirùm dum
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              aſcendit non minus ſuſtentatur quàm dum quieſcit. </s>
            </p>
            <p type="margin">
              <s id="s.000352">
                <margin.target id="marg81"/>
              Cap. 3. flui­
                <lb/>
              dum in ſuo
                <lb/>
              toto quie­
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              ſcens pon­
                <lb/>
              derat.</s>
            </p>
            <p type="main">
              <s id="s.000353">Sed dices, cum motus vertiginoſus aquæ fieri
                <expan abbr="">non</expan>
                <lb/>
              poſſit abſque eo quod vna pars deſcendat, & reli­
                <lb/>
              qua ſubleuetur, eſt valdè probabile, vt ſicut aſcenſus
                <lb/>
              aquæ FG indicat defectum grauitatis, cùm prædi­
                <lb/>
              ctus motus ſupponat impetum à quo ſursùm propel­
                <lb/>
              latur ſicuti ſaxum quod ſursùm proijcitur in actu ſui
                <lb/>
              aſcenſus, neque graue dici poteſt, nec grauitatem
                <lb/>
              exercet, proptereà quòd ab impetu impreſſo con­
                <lb/>
              trario grauitati, vel ipſamet grauitas deſtruitur, vel
                <lb/>
              impeditur, & ceſſat eius operatio. </s>
              <s id="s.000354">Oppoſitum con-</s>
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