Descartes, René, Renati Des-Cartes principia philosophiae

Table of figures

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          <chap>
            <p type="main">
              <s>
                <pb pagenum="115"/>
              contenti, ſimul deſcendant, reliquis immotis. </s>
              <s>Ubi qui­
                <lb/>
              dem notare licet duos globos 2, 2, poſtquam aliquan­
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              tulum ſequuti ſunt globum i deſcendentem, ſe mutuò
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              impedire ne ulteriùs pergant. </s>
              <s>Sed idem in globulis
                <lb/>
                <arrow.to.target n="marg804"/>
              ſecundi elementi locum non habet: cùm enim in per­
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              petuo ſint motu, quamvis aliquando poſſit contingere,
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              ut eodem plan modo ſint diſpoſiti ac globi plumbei
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              in hac figurâ depicti, hoc non niſi per minimum tem­
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              poris pundum, quod inſtans vocant, durare poteſt,
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                <arrow.to.target n="marg805"/>
              &sideò continuitatem earum motûs non interrumpit. </s>
              <s>
                <lb/>
              Ac proeterea notandum eſt vim luminis, non in aliquâ
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              motûs duratione conſiſtere, ſed tantummodo in preſ­
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              ſione a ſive in primâ preparatione ad motum, etſi fortè
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              ex eâ motus ipſe non ſequatur. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg801"/>
              LXIII.
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              Globulos materiae cae­
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              leſtis ſe mutuò non
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              impedire in iſto co­
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              natu. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg802"/>
              20</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg803"/>
              25</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg804"/>
              5</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg805"/>
              10</s>
            </p>
            <figure id="fig17" number="17"/>
            <p type="main">
              <s>
                <arrow.to.target n="marg806"/>
                <lb/>
                <arrow.to.target n="marg807"/>
              Ex quibus clarè percipitur, quo pacto actio illa,
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              quam pro luce accipio, à Solis vel cujuſlibet Stellae
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              fixae corpore in omnes partes aequaliter ſe digundat;
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              & in minimo temporis momento ad quamlibet diſtan­
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              tiam extendatur; & id quidem ſecundùm lineas rectas,
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                <arrow.to.target n="marg808"/>
              non à ſolo corporis lucidi centro, ſed etiam à qui­
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              buſlibet aliis ejus ſuperficiei punctis eductas. </s>
              <s>Unde
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              reliquae omnes lucis proprietates deduci poſſunt. </s>
              <s>
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              Quodque fortè multis paradoxum videbitur, haec om­
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              nia ita ſe haberent in materiâ coeleſti, etiamſi nulla
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                <arrow.to.target n="marg809"/>
              planè eſſet vis in Sole, aliove aſtro circa quod gyratur:
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              adeò ut, ſi corpus Solis nihil aliud eſſet quàm ſpatium
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              vacuum nihilominus ejus lumen non quidem tam
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              forte, ſed quantum ad reliqua, non aliter quàm nunc
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              cerneremus, ſaltem in circulo ſecundùm quem ma­
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                <arrow.to.target n="marg810"/>
              teria coeli movetur; nondum enim hîc omnes ſphaerae </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>