Descartes, René, Renati Des-Cartes principia philosophiae

Page concordance

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              CXXVI.
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              Cur ſit liquidum cùm
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              candet, omneſque fi­
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              guras facilè induat. </s>
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              15</s>
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              20</s>
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              25</s>
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              Cùm deinde vitrum planèè refriguit, eſt valde du­
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              rum, ſed ſimul etiam valde fragile, atque eò frigilius
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              quò citiùs refriguit. </s>
              <s>Nempe duritiei cauſſa eſt, quòd
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              conſtet tantùm particulis ſatis craſſis &, inflexilibus,
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              quae non ramulorum intextu, ſed immediato
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              ſibi invicem adhaerent. </s>
              <s>Alia enim pleraque corpora
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              ideò mollia ſunt, quòd eorum particulae ſint flexiles
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              vel certè deſinant in ramulos quoſdam flexiles, qui
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              ſibi mutuò annexi eas jungunt. </s>
              <s>Nulla autem duorum
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              corporum firmior adhaſio eſte poteſt, quàm ea quae
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              oritur ex ipſorum immediato contactu; cùm ſcilicet
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              ita ſe invicem tangunt, ut neutrum ſit in motu ad ſe ab
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              alio ſejungendum; quòd accidit vitri particulis, ſtatim
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              atque ab igne remotae ſunt: quia earum craſſities, &
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              contiguitas, & figurae inaequalitas impediunt,
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              poſ­
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              ſint ab ae
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              re circumjacente in eo motu, quo ab invicem
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              disjungebantur, conſervari. </s>
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              CXXVII.
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              Cur, cùm frigidum eſt,
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              fit valde durum. </s>
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              5</s>
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              10</s>
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              15</s>
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              At nihilominus vitrum eſt valde fragile, quia ſuper­
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              ficies ſecundùm quas ejus particulae ſe invicem tan­
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              gunt, ſunt admodum exiguae ac paucae. </s>
              <s>Multaque
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              corpora molliora diſſiciliùs franguntur, quia eorum
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              partes ita ſunt intertextae, ut ſeparari non poſſint, quin
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              ipſarum multi ramuli rumpantur & evellantur. </s>
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              CXXVIII.
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              Cur valde fragile. </s>
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              20</s>
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              Eſt etiam fragilius cùm celeriter, quàm cùm lentè,
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              refriguit; ejus enim meatus ſunt ſatis laxi dum candet,
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              quia tunc multa materia primi elementi, ſimul cum
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              globulis ſecundi, ac etiam fortè cum nonnullis ex
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              tenuioribus tertii particulis, per illos tranſit. </s>
              <s>Cùm au­
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              tem refrigeratur ſponte, redduntur anguſtiores; quia
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              ſoli globuli ſecundi elementi, per ipſos tranſeuntes,
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              minùs ſpatii requirunt; atque ſi refrigeratio nimis </s>
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          </chap>
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