Archimedes, Archimedis De iis qvae vehvntvr in aqva libri dvo

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        <div type="section" level="1" n="62">
          <head xml:space="preserve">FEDERICI COMMANDINI
            <lb/>
          VRBINATIS LIBER DE CENTRO
            <lb/>
          GRAVITATIS SOLIDORVM.
            <lb/>
          DIFFINITIONES.</head>
          <p>
            <s xml:space="preserve">
              <emph style="sc">CEntrvm</emph>
            grauitatis, Pappus
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            Alexandrinus in octauo ma-
              <lb/>
            thematicarum collectionum
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            libro ita diffiniuit.</s>
            <s xml:space="preserve"/>
          </p>
          <p style="it">
            <s xml:space="preserve">λέγομεν δἐ κἐντρον βάρ
              <unsure/>
            ους ἑκά στου σἀ
              <unsure/>
              <lb/>
            ματος {εἶ}ναι σημ\~ειον τικείμενον ἑντὸς, ἀφ
              <unsure/>
              <lb/>
            οὖ κα\’τ ἐποίνιαν ἀρτηθέν τό βάρ
              <unsure/>
            ος ἡμερ{εἶ}
              <lb/>
            φερ
              <unsure/>
            όμενον, καὶ φυλὰσσει τήν ἐξἀρχ\~νςθἐ-
              <lb/>
            σιν, οὐ μὴ περιτρ
              <unsure/>
            επ ὸμενον ἐντῆ φορ
              <unsure/>
            ᾶ. </s>
            <s xml:space="preserve">hoc eſt,</s>
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          <p>
            <s xml:space="preserve">Dicimus autem centrum grauitatis uniuſcu-
              <lb/>
            inſque corporis punctum quoddam intra poſi-
              <lb/>
            cum, à quo ſi graue appenſum mente concipia-
              <lb/>
            tur, dum fertur quieſcit; </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">ſeruat eam, quam in
              <lb/>
            principio habebat poſitionem: </s>
            <s xml:space="preserve">neque in ipſa la-
              <lb/>
            tione circumuertitur.</s>
            <s xml:space="preserve"/>
          </p>
          <p>
            <s xml:space="preserve">Poſſumus etiam hoc modo diffinire.</s>
            <s xml:space="preserve"/>
          </p>
          <p>
            <s xml:space="preserve">Centrum grauitatis uniuſcuiuſque ſolidæ figu
              <lb/>
            ræ eſt punctum illud intra poſitum, circa quod
              <lb/>
            undique partes æqualium momentorum conſi-
              <lb/>
            ſtunt. </s>
            <s xml:space="preserve">ſi enim per tale centrum ducatur planum
              <lb/>
            figuram quomodocunque ſecans ſemper in par-</s>
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