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

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s id="s.000662">
                <pb pagenum="132" xlink:href="010/01/140.jpg"/>
                <arrow.to.target n="marg164"/>
              </s>
            </p>
            <p type="margin">
              <s id="s.000663">
                <margin.target id="marg164"/>
              Cap. 4. poſi­
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              tiuam leui­
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              tatem noņ
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              dari.</s>
            </p>
            <p type="main">
              <s id="s.000664">
                <emph type="center"/>
              PROP. LXIV.
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              </s>
            </p>
            <p type="main">
              <s id="s.000665">
                <emph type="center"/>
                <emph type="italics"/>
              Fumi structura, & compoſitio declaratur.
                <emph.end type="italics"/>
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000666">COnſtat fumum eſſe maſſam copioſam particula­
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              rum exiguarum olei, terræ, & aquæ, quæ par­
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              ticulæ ab inuicem diſcretæ, & ſeparatæ nondùm̨
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              accenſæ ſunt, licèt valdè excalefactæ ſint. </s>
              <s id="s.000667">hoc planè
                <lb/>
              confirmatur ab operatione chymica, poſſunt enim̨
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              recolligi ex fumo partes aqueæ ſegregatæ, & diſcre­
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              tæ à partibus vnctuoſis, & ſulphureis, nec non à
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              particulis terreis, & fuliginoſis, & viciſſim quæli­
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              bet ex prædictis ſubſtantijs recuperari poteſt ſepa­
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              rata à reliquis; præterea conſtat ſenſu, fumum noņ
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              eſſe corpus continuum, ſed aggregatum ex particu­
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              lis minimis ab inuicem ſeparatis, & diſcretis, vt præ­
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              clarè in nebula obſeruatur, & in alijs aqueis vapo­
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              ribus, qui ſi attentè conſpiciantur in loco commodo,
                <lb/>
              ideſt ſi interpoſita nebula viſus dirigatur inſpiciat­
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              que obſcurum, & tenebroſum aliquem locum, & in­
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              terim Sol transuerſalitèr eamdem nebulam illuſtret;
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              tunc illa nebula, quæ repreſentabatur continua ap­
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              paret eſſe conflata ex immenſa multitudine exiguo­
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              rum granulorum aquæ, quæ lento quodam motu per
                <lb/>
              aerem agitantur, vt contingit in ijs fragmentis ter­
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              reis minutiſſimis, quæ conſpiciuntur in radijs Solis
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              intra cubicula. </s>
              <s id="s.000668">Iam prædicta granula aquea copio­
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              ſiſſima vagantia per aerem non facile viſibilia ſunt
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              ſigillatim ob eorum exiguitatem, ſed poſſunt tran-</s>
            </p>
          </chap>
        </body>
      </text>
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