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

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            <p type="main">
              <s id="s.000968">
                <pb pagenum="189" xlink:href="010/01/197.jpg"/>
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                <lb/>
              gulo ENF ducatur IK parallela EF, & æqualis ipſi
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              PB, & ducta RNS parallela ipſis EF, & IK reuolua­
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              tur figura circa axim RS vt fiant duo cylindri
                <expan abbr="concẽ-trici">concen­
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                trici</expan>
              EFGH, & IKLO; intelligatur modò ſpatium
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              internum IKLO repletum ſubſtantia homogenea ip­
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              ſi cylindro DB, & reſiduum ambiens EFGH explea­
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              tur ex eadem ſubſtantia corporea ipſius AD; & quia
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              AB ad MB, ſiuè cylinder AC ad cylindrum MC, vel
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              cylinder EG ad cylindrum IL triplicatam propor­
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              tionem habet lateris AB ad PB, vel EF ad IK; ergo
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              cylinder AC ad MC eamdem proportionem habet,
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              quam integer cylindrus EG ad cauitatem cylindri­
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              cam IL, & per conuerſionem rationis cylinder AC
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              ad. </s>
              <s id="s.000969">cylindrum AD ſe habet vt totus cylindrus EG
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              ad partem continentem EKGO. </s>
              <s id="s.000970">Suntque cylindri
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              AC, & EG æquales, cùm ſint ſimiles, & ſimilitèr po­
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              ſiti circa latera æqualia AB, & EF, igitur cylinder
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              excauatus EKGO æqualis eſt ſibi homogeneo cylin­
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              dro AD, proindeque cylinder IL æqualis, & homo­
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              geneus erit ipſi MC, quod fuerat. </s>
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              Cap. 4. poſi­
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              tiuam leui­
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              tatem noņ
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              dari.</s>
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              <s id="s.000972">His præhabitis noto, quòd cùm agitur de faculta­
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              te, ſeù principio quo corpora vim faciunt tendendo
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              deorsùm, quęrimus tantummodò gradum virtutis
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                preſſiuæ</expan>
              eorum, quæ procùl dubio à grauitate, ſeu
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              pondere eorum menſuratur, hoc verò duplici modo
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              augeri poſſe conſtat, aut per multiplicationem eiuſ­
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              dem corporis, vt cum lignea columna augetur mole,
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              aut cum
                <expan abbr="ſubſtãtia">ſubſtantia</expan>
              corporea, & plena in eodem ſpatio
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              diſſeminata, & contenta magis ſtringitur, conden-</s>
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          </chap>
        </body>
      </text>
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