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

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      <text>
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            <p type="main">
              <s id="s.001162">
                <pb pagenum="226" xlink:href="010/01/234.jpg"/>
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                <lb/>
              gutta aliqua mercurij ſubito ceſſat æquilibrium, &
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              ideò maius pondus collateralis columnæ aereæ po­
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              teſt ſursùm intra fiſtulam impellere molem minus
                <expan abbr="põ-derãtis">pon­
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                derantis</expan>
              mercurij incluſi; & licèt ab initio motus mer­
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              curij ſursùm ſit tardus, & debilis, tamen in progreſ­
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              ſu, & continuatione prædicti motus dum repetitis
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              ictibus mercurius ab aeris pondere, & vi eius elaſti­
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              ca continenter impellitur, nouos gradus impetus, &
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              velocitatis creat, qui impetus ſunt integri, &
                <expan abbr="eiuſdẽ">eiuſdem</expan>
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              energiæ, non enim à vacuo intra fiſtulam incluſo de­
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              bilitari poſſunt, veluti debilitantur impetus
                <expan abbr="corporũ">corporum</expan>
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                <arrow.to.target n="marg301"/>
                <lb/>
              per aerem excurrentium; prædicti verò gradus velo­
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              citatum ſimul coaceruati, tandem vim illam
                <expan abbr="ingentẽ">ingentem</expan>
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              componunt, quæ diffringere fundum vitreæ fiſtulæ
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              poteſt; adde quod corpora grauiſſima; vt eſt hydrar­
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              gyrum validius fuſcipiunt retinentque vim impetus
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              præconcepti, & hinc ſequitur percuſſio eius validiſ­
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              ſima in vitri fundum. </s>
              <s id="s.001163">Supradictum ratiocinium ab ip­
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              ſa experientia
                <expan abbr="cõſirmari">confirmari</expan>
              videtur; ſi enim fiſtula præ­
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              longa ſubtili, & gracili fundo clauſa, & mercurio ple­
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              na inuerſo ore infra mercurium in ſcutella
                <expan abbr="ſtagnantẽ">ſtagnantem</expan>
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              demerſa, & inclinato ſitu detineatur vt mercurius
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              minus vno digito à ſupremo fundo diſtet, tunc ſu­
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              ſpenſa fiſtula aer adueniens fundum eius non diffrin­
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              git, at perpendiculari ſitu erecta fiſtula aer
                <expan abbr="ſuccedẽs">ſuccedens</expan>
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              ingenti impetu
                <expan abbr="diſtãtem">diſtantem</expan>
              à fundo mercurium propel­
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              lit vt eum diffringat, quia nimirum in prolixiori mo­
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              tu plures gradus impetus creari, & ſimul coaceruari
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              poſſunt. </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>