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.001078">
                <pb pagenum="208" xlink:href="010/01/216.jpg"/>
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                <lb/>
              ſi æquilibrium momentorum efficiatur, ſcilicèt niſi
                <lb/>
              momentum ponderis cylindri aerei ſuperficiem DE
                <lb/>
              comprimentis æquale fuerit momento ponderis cy­
                <lb/>
              lindri mercurialis BF. </s>
              <s id="s.001079">Huiuſmodi ſpeculatio magno
                <lb/>
              plauſu à viris doctis excepta fuit, alijſque
                <expan abbr="experimẽ-tis">experimen­
                  <lb/>
                tis</expan>
              pariter comprobata, quia nimirùm ſi loco hydrar­
                <lb/>
              gyri aquam adhibeamus, vel aliud fluidum, tunc aqua
                <lb/>
              pura eleuatur ad altitudinem pedum 32. vel cubito­
                <lb/>
              rum 17. proximè cuius pondus præcisè æquatur gra­
                <lb/>
              uitati prædicti cylindri mercurialis BF vnius cubiti,
                <lb/>
              & quadrantis (ſumptis nimirum baſibus æqualibus)
                <lb/>
              & ſi fuerit oleum altius quàm aqua pura eleuatur, ſed
                <lb/>
              præcisè quantum exigit aquæ grauitas ei æqualis;
                <lb/>
              idemque continget ſi fuerit aliquis ſpiritus, vel qui­
                <lb/>
              libet alius liquor. </s>
              <s id="s.001080">cùm igitur in hiſce omnibus fiſtulis
                <lb/>
              eleuentur varij liquores, itaut eorum partes eleuatæ
                <lb/>
              ſuper infimam libellam ſemper eiuſdem ſint grauita­
                <lb/>
              tis, dicendum neceſſariò eſt ab vnica, & eadem vi
                <lb/>
              compreſſiua eleuari, quę ſemper eiuſdem roboris ſit:
                <lb/>
              at nulla alia aſſignari poteſt præter pondus cylindri
                <lb/>
              aerei liquori in ſcutella contento
                <expan abbr="incũbentis">incumbentis</expan>
              . </s>
              <s id="s.001081">igitur
                <lb/>
              poteſt aer incumbens eleuare prædictos liquores, hoc
                <lb/>
              autem minimè effici poſſet abſque eo quod in aerę
                <lb/>
              æquilibrium efficeretur; ſicuti in maris oceano ex eo
                <lb/>
              quod omnes partes aquæ æquali niſu deorſum ferun­
                <lb/>
              tur, & premunt, fit vt eius ſuprema libella ſphæricè
                <lb/>
              contornetur, ſic paritèr ſuprema aeris ſuperficies
                <lb/>
              ſphæricè tornata erit, ex eo quod partes eius omnes
                <lb/>
              æquali niſu deorſum
                <expan abbr="grauitãtes">grauitantes</expan>
              æquilibrium
                <expan abbr="efficiũt">efficiunt</expan>
              . </s>
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