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

List of thumbnails

< >
181
181
182
182
183
183
184
184
185
185
186
186
187
187
188
188
189
189
190
190
< >
page |< < of 579 > >|
    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s id="s.001260">
                <pb pagenum="245" xlink:href="010/01/253.jpg"/>
                <arrow.to.target n="marg327"/>
                <lb/>
              ua reperit, quòd grauitas molis aeris, quæ æqualis
                <lb/>
              ſit cubo aqueo vnius libræ granum vnum pendet. </s>
              <s id="s.001261">at
                <lb/>
              Merſennus in Phęnomenis pneumaticis ope ignis
                <expan abbr="eã-dem">ean­
                  <lb/>
                dem</expan>
              experientiam fecit, ſumpſit æolo pilam æream,
                <lb/>
              eamque vehementiſſimo igne calefecit, vt prorsùs
                <lb/>
                <arrow.to.target n="marg328"/>
                <lb/>
              candeſceret, & ſic in bilance perſectiſſima, quæ à ſe­
                <lb/>
              migraro ſlectebatur, examinauit pondus eiuſdem̨
                <lb/>
              ęolo pilæ
                <expan abbr="candẽtis">candentis</expan>
              , eamque reperit
                <expan abbr="vnciarũ">vnciarum</expan>
              4. drach.
                <lb/>
              </s>
              <s id="s.001262">6. & gran. 15. poſtea refrigerata æolo pila eius pon­
                <lb/>
              dus præcedentem ſuperauit gran. 4. & hinc elicit ae­
                <lb/>
              rem incluſum in æolo pila grana 4. ponderaſſe, porrò
                <lb/>
              pondus aeris illius ad æqualem aquæ molem ait re­
                <lb/>
              periſſe in proportione 1. ad 1356. </s>
            </p>
            <p type="margin">
              <s id="s.001263">
                <margin.target id="marg326"/>
              4. de cęlo.
                <lb/>
              cap. 4.</s>
            </p>
            <p type="margin">
              <s id="s.001264">
                <margin.target id="marg327"/>
              Cap. 5. de ae­
                <lb/>
              ris grauitate
                <lb/>
              æquilibrio,
                <lb/>
              ſtructura, &
                <lb/>
              vi elaterią
                <lb/>
              eius.</s>
            </p>
            <p type="margin">
              <s id="s.001265">
                <margin.target id="marg328"/>
              Prop. 29.</s>
            </p>
            <p type="main">
              <s id="s.001266">Sed prædicta experientia multis nominibus infi­
                <lb/>
              delis eſt, primò quia corpora vehementer excalefacta
                <lb/>
              in bilance ſuſpenſa non oſtendunt veram grauitatem
                <lb/>
                <arrow.to.target n="marg329"/>
                <lb/>
              eorum, ſed diminutam, quia vt ſuperiùs oſtenſum̨
                <lb/>
              eſt, ignis diffuſus ab æolo pila candente valdè rare­
                <lb/>
              facit aerem prædictam æolo pilam ambientem, cum­
                <lb/>
              que aer ambiens fimul cum pila vnum corpus graue
                <lb/>
              componat intra denſiorem aerem ſuſpenſum, fit vt
                <lb/>
              aggregatum prædictum minùs graue ſpecie ſit,
                <expan abbr="quã">quam</expan>
                <lb/>
              prius, & proinde imminuitur grauitas æreæ æolo pi­
                <lb/>
              læ, non ſolùm ob deſectum aeris incluſi, ſed etiam ob
                <lb/>
              eius ſeruentiſſimam caliditatem. </s>
            </p>
            <p type="margin">
              <s id="s.001267">
                <margin.target id="marg329"/>
              c 4 prop. 61.</s>
            </p>
            <p type="main">
              <s id="s.001268">Rursùs aer in ęolopila à vehementiſſimo igne am­
                <lb/>
              pliatus expanſuſque non poteſt dici verè rarefactus,
                <lb/>
              quia nimirùm copia ignis vehementiſſimè agitati, &
                <lb/>
              circumuoluti intra æolo pilæ cauitatem diſgregat, ac </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>