Descartes, René, Renati Des-Cartes principia philosophiae

Table of figures

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              miſtam, & ad ipſam quoque eſſe referendas illas par­
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              ticulas terreſtres, quae curſum ejus ſequutae, caeteris
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              celeriùs moventur, quales ſunt eae omnes quae ae
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              rem
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              componunt. Advertendum proeterea, materiam primi
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              elementi, caeteris paribus, majorem vim habere ad
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              corpora terreſtria deorſum pellenda, quàm globulos
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              ſecundi, quia plus habet agitationis; & hos majorem,
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              quàm particulas terreſtres ae
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              ris quas ſecum movent,
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              ob ſimilem rationem. </s>
              <s>Unde ſit, ut ex ſolâ gravitate
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              non facilè poſſit aeſtimari, quantum in quoque corpore
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              materiae terreſtris contineatur. </s>
              <s>Et fieri poteſt, ut quam­
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              vis, exempli cauſſâ, maſſa auri vicies plus ponderet,
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              quàm moles aquae ipſi aequalis, non tamen quadruplo
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              vel quintuplo plus materiae terreſtris contineat: tum,
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              quia tantundem ab utrâque ſubducendum eſt, propter
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              ae
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              rem in quo ponderantur; tum etiam, quia in ipſâ
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              aquâ, ut & in omnibus aliis liquidis corporibus, prop­
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              ter ſuarum particularum motum, ineſt levitas a, reſ­
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              pectu corporum durorum. </s>
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              XXV.
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              Ejus quantitatem non
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              reſpondere quantitati
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              materiae cujuſque cor­
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              poris. </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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              Conſiderandum etiam, in omni motu eite circulum
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              corporum quae ſimul moventur, ut jam ſuprà oſten­
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              ſum eſt b, nullumque corpus à gravitate ſuâ deorſum
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              ferri, niſi eodem temporis momento aliud corpus ma­
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              gnitudine ipſi aequale, ac minùs habens gravitatis,
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              ſurſum feratur. </s>
              <s>Unde ſit, ut in vaſe, quantumvis
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              profundo & lato, inſeriores aquae alteriuſve liquoris
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              guttae, à ſuperioribus non premantur; nec etiam pre­
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              mantur ſingulae partes fundi, niſi à totidem guttis,
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              quot ipſis perpendiculariter incumbunt. </s>
              <s>Nam, </s>
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