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

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              Cap. 7. dę
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              natura flui­
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              ditatis.</s>
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              De Natura, & Cauſa fluiditatis.
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              CAP. VII.
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              <s id="s.001480">POſtquam euicimus aquam, & aerem, in eorum­
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              met regionibus ponderare, & grauitatem exer­
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              cere, inſuperque attractionem in natura non dari; po­
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              terit
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              natura, & vera cauſa fluiditatis
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              aſſignari. </s>
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              <s id="s.001481">Et primò more noſtro de finitionem fluiditatis affe­
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              remus deſumptam ab aliqua inſigni, & euidenti paſ­
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              ſione eius corporis, quod fluidum appellatur. </s>
              <s id="s.001482">Et pro­
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              fectò quotieſcumque video, atque conſidero diffe­
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              rentiam inter glaciem, & aquam fluentem, obſeruo
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              in illa duritiem, & conſiſtentiam, qua iſta caret, video
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              enim immiſſo digito, quòd glacies non cedit, aquą
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              verò fluida facillimè locum præſtat ſubmerſioni, &
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              ingreſſui digiti, perfecteque circa ipſum diſponi­
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              tur, & adaptatur, vt vndequaque
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              contingat. </s>
              <s id="s.001483">Video
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              inſuper non poſſe angulum glaciei impelli, aut quo­
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              modolibet loco-moueri, quin tota maſſa glacialis ſi­
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              mùl moueatur, cum è contrà in aqua fluida poſſit quę­
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              libet eius particula impelli, circumuolui, alijſquę
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              modis agitari, quieſcentibus tamen reliquis partibus
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              eius, vel ſaltem agitatis motu tardiori, vel non ad eaſ­
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              dem partes facto. </s>
              <s id="s.001484">Poſtremò obſeruo aquam fluidam
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              perfectiſſimè explanari, & ad libellam horizonti æ­
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              quidiſtantem reduci, quod minimè fieri poſſet, niſi
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              partes eius extremæ, ſuperficialeſque æquè à medio
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              puncto telluris recederent. </s>
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