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

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              <s id="s.001535">
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              Cap. 7. dę
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              natura flui­
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              ditatis.</s>
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            <p type="main">
              <s id="s.001537">HIs poſitis animaduerto quòd quotieſcumquę
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              corpus aliquod fluidum eſſe ſupponitur, neceſ­
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              sè eſt, vt eius partes actu diuiſæ inter ſe ſint; quia flui­
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              dum habere debet naturalem conformationem di­
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              ſpoſitionem, & omnia requiſita vt elicere poſſit
                <expan abbr="illũ">illum</expan>
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              motum, quem fluxionem vocamus, ſcilicèt ſi vną
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              eius pars moueri queat cæteris quieſcentibus, vel ſi
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              omnes mouentur, percurrant motu directo inæqualia
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              ſpatia, vel ſi circularitèr ferantur, maiorem, vel mi­
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              norem proportionem vertigines habeant, quam di­
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              ſtantiæ à centro reuolutionis; hæ enim motiones ef­
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              fici nequeunt, niſi partes fluidi actu inter ſe diuiſæ
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              ſint, vt mox
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              fuit, igitur quotieſcumque cor­
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              pus aliquod fluidum eſſe ſupponitur, neceſſariò par­
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              tes eius actu inter ſe diuiſæ erunt. </s>
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              PROP. CXXXIX.
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              Fluidum non poteſt habere partes connexas vnvm con­
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              tinuum conſtituentes.
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                <emph.end type="center"/>
              </s>
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              <s id="s.001540">PRæterea ſi partes fluidi non eſſent diuiſæ actu,
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              ſcilicèt ſi aqua haberet omnes eius partes planè
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              connexas, & conglutinatas vnum continuum conſti­
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              tuentes, atque hæ motu directo, vel circulari moue­
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              rentur intra fluidum ſui generis, ſcilicèt intrà aquam
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              ſtagnantem, cum eius particulæ minimæ eamdem in­
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              uariabilem diſpoſitionem, ſituationem, ac texturam
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              retinere
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              , ac ſi partes alicuius duri corporis,
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              vel rotæ ſolidæ eſſent, procùl dubio eodem tempore </s>
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