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

Table of figures

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        <body>
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            <p type="main">
              <s id="s.001144">
                <pb pagenum="223" xlink:href="010/01/231.jpg"/>
                <arrow.to.target n="marg296"/>
                <lb/>
              maduerſum facilè conſtat, non enim dixiſſet:
                <emph type="italics"/>
              ſi tantu­
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              lum aeris antequam demittatur mercurius in fistula, relin­
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              quatur mercurius deſcendet infra H. vbi ſuſtineri debuerat
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              ſi ab aeris cylindro ſuſtinebatur.
                <emph.end type="italics"/>
              reuerà enim quælibet
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              portiones aeris minores ſpatio ID ſummam altitudi­
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              nem mercurij in fiſtula non deprimunt, quia nimirùm
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              aereus cylindrus eiuſdem roboris æquali vi compri­
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              mit mercurium ſubiectum. </s>
              <s id="s.001145">At quando aeris moles
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              maior ID ibidem includitur, tunc virtute eius elate­
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              ria, vt poſtea dicemus, vim facit contra impulſum̨
                <lb/>
              aeris externi, nempè cylindrus mercurij HO æquili­
                <lb/>
              bratus ab aere externo impellitur ſursùm ab O ver­
                <lb/>
              sùs H, ab aere verò incluſo intra ampullam AB, dum
                <lb/>
              conatur ſe dilatare repellitur deorsùm ab H versùs
                <lb/>
              O. </s>
              <s id="s.001146">Vis ergo aeris comprimentis mercurium ſtagnan­
                <lb/>
              tem L agit contra duas reſiſtentias, ſcilicèt contra
                <expan abbr="põ-dus">pon­
                  <lb/>
                dus</expan>
              mercurij HO, & contra vim exiguam aeris in­
                <lb/>
              cluſi ſe dilatare conantis; igitur in hoc caſu minor erit
                <lb/>
              altitudo mercurij OK quam HO, licet producatur ab
                <lb/>
              eadem aeris virtute premente; Nil igitur ex hac ter­
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              tia aduerſarij ratione deducitur contra aeris preſſio­
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              nem, & æquilibrium cum mercurio incluſo intra fi­
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              ſtulam. </s>
            </p>
            <p type="margin">
              <s id="s.001147">
                <margin.target id="marg295"/>
              Cap. 5. de ae­
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              ris grauitate
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              æquilibrio,
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              ſtructura, &
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              vi elaterią
                <lb/>
              eius.</s>
            </p>
            <p type="margin">
              <s id="s.001148">
                <margin.target id="marg296"/>
              Cap. 5. de ae­
                <lb/>
              ris grauitate
                <lb/>
              æquilibrio,
                <lb/>
              ſtructura, &
                <lb/>
              vi elaterią
                <lb/>
              eius.</s>
            </p>
            <p type="main">
              <s id="s.001149">Quarta ratio eadem ferè eſt cum prima, ad eamque
                <lb/>
                <arrow.to.target n="marg297"/>
                <lb/>
              reducitur. </s>
              <s id="s.001150">quinta verò pendet ex eo quod ſpatium̨
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              ſupremum fiſtulæ poſt mercurij lapſum non vacuum,
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              ſed repletum eſſe ait ex materia quadam tenuiſſima,
                <lb/>
              ſed valdè tenſa de qua re ſuo loco diſputabimus; in­
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              terim incidenter noto eius verba dum ait,
                <emph type="italics"/>
              tantam ae-
                <emph.end type="italics"/>
              </s>
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