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

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              <s id="s.002645">
                <pb pagenum="500" xlink:href="010/01/508.jpg"/>
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                <lb/>
              cea inſumere debet duo minuta ſecunda tantùm, quę
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              varietas pendere videtur ex eo, quod velocitates
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              fuerunt à Merſenno obſeruatæ in valdè prolixo ſpa­
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              tio, vbi medij conſiſtentia, & gluten valdè
                <expan abbr="alterãt">alterant</expan>
              , &
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                <expan abbr="augẽt">augent</expan>
              inæqualitates velocitatum, quæ ſi propè ini­
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              tium motus obſeruatæ fuiſſent, procùl dubio non ha­
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              buiſſent quintuplam, ſed tantummodò duplam pro­
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              portionem. </s>
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            <p type="margin">
              <s id="s.002646">
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              Hydraul­.
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              fol. 116.</s>
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            <p type="margin">
              <s id="s.002647">
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              Cap. 11. gra­
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              uia in fluido
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              velocitati­
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              bus inæqua­
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              libus ferri
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              debere.</s>
            </p>
            <p type="main">
              <s id="s.002648">Hinc quoque deducitur imperitia eorum, qui dum
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              experiri volunt, an corpora inęqualiter grauia
                <expan abbr="deſcẽ-dant">deſcen­
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                dant</expan>
              inæqualibus velocitatibus, putant hoc fieri de­
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              bere non in exiguis, ſed in prolixis deſcenſibus, &
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              ideò obſeruant inæqualitates velocitatum corporum
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              in aere deſcendentium ab altiſſimis turribus vbi ve­
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              locitates plumbi, & argillæ valdè differunt inter ſe,
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              cùm tamen in breuioribus altitudinibus nullo ſenſu
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              diſtingui poſſint
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              inæqualitates, cùm ambo
                <expan abbr="eodẽ">eodem</expan>
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              tempore ferri videantur. </s>
              <s id="s.002649">Et antequam vlterius pro­
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              cedamus, afferemus duas experientias contra negan­
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              tes motum acceleratum ſolidorum corporum intra a­
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              quam; & primò in deſcenſu pilam plumbeam feta e­
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              quina ſuſpendi,
                <expan abbr="habẽtem">habentem</expan>
              infernè
                <expan abbr="acũ">acum</expan>
                <expan abbr="infixã">infixam</expan>
              , eamque
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              demiſi intra aquam in diuerſis altitudinibus à fundo
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              cera incruſtato,
                <expan abbr="tũc">tunc</expan>
              vidi acum profundius ceram pe­
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              netrare quò à ſublimiori altitudine pila decidebat.
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              </s>
              <s id="s.002650">in aſcenſu verò ſumpſi leuiſſimum calamum
                <expan abbr="anſerinũ">anſerinum</expan>
              ,
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              eiuſque infimum orificium fruſto plumbi perfectè
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              obturaui, atque bacillo demerſi calamum directè in­
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              fra aquam, in maiori tamen profunditate, quàm eius </s>
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          </chap>
        </body>
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