Descartes, René, Renati Des-Cartes principia philosophiae

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              meatus, aliâ materiâ ſolidiori repletos, intelligimus;
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              &sfiguram obtinent ſphaericam, quae omnium mini­
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              mum habet ſuperficiei, pro ratione molis ſub ſe con­
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              tentae, ut Geometris eſt ſatis notum. </s>
              <s>Et praeterea,
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              quamvis ſit permagna diſparitas inter ipſorum exigui­
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              tatem & magnitudinem alicujus ſideris, haec tamen
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              ex parte compenſatur, eo quòd non vires ſingulorum
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              ex iſtis globulis, ſed plurium ſimul, iſtius ſideris viri­
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              bus opponantur. </s>
              <s>Cùm enim illi cum aliquo ſidere
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              circa centrum S rotantur, tenduntque omnes, nec
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              non etiam iſtud ſidus, ut ab S recedant, ſi vis inde
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              recedendi, quae eſt in ſidere, ſuperet vires ſimul junctas,
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              quae ſunt in tot ex iſtis globulis, quot requiruntur ad
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              ſpatium quod ſidus occupat replendum: tunc ipſum
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              recedet ab S, efficietque ut iſti globuli in locum ſuum
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              deſcendant; & contrà, ſi illi plus habeant virium,
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              ipſum verſùs S expellent. </s>
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              CXXIII.
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              Quomodo globuli coe­
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              leſtes integro aliquo
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              ſidere ſolidiores eſſe
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              poſſint. </s>
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              25</s>
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              30</s>
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              5</s>
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              10</s>
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              15</s>
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              Fieri enim etiam facilè poteſt, ut ſidus N multò plus
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              habeat virium ad perſeverandum in ſuo motu ſecun­
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              dùm lineas rectas, quàm globuli materiae coeleſtis
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              ipſum circumjacentes, etiamſi minùs materiae tertii
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              elementi in eo contineatur, quàm ſecundi, in tot ex
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              iſtis globulis, quot requiruntur ad ſpatium ipſi aequale
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              occupandum. </s>
              <s>Quia cùm ſint à ſe mutuò disjuncti, &
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              varios habeant motus, quamvis junctis viribus in illud
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              agant, non poſſunt tamen omnes ſuas vires ita ſimul
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              jungere, ut nulla earum pars inutilis fiat: contrà
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              autem omnis materia tertii elementi, ex quâ maculae
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              hoc ſidus involventes ae
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              rque ipſum ambiens compo­
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              nuntur, unam tantùm maſſam facit, quae cùm tota
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              ſimul moveatur, tota etiam vis, quam habet ad </s>
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