Descartes, René
,
Renati Des-Cartes principia philosophiae
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ſecundùm quos materia coeleſtis circa centrum S
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gyrat; & poſtquam eò pervenit, ita curſum ſuum ulte
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riùs perſequitur, ut ſemper magis ac magis recedat à
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centro S, donec ex vortice A E I O in alium migret. </
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Ut ſi moveatur initio ſecundùm lineam NC,
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pervenit ad C, ubi haec linea curva N C tangit circu
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lum, qui ibi deſcribitur à globulis ſecundi elementi
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circa centrum S: non poteſt non ſtatim recedere ab S
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per lineam curvam C2, ſitam inter hunc-circulum, &
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rectam eum in puncto C tangentem. </
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dela
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tum ſit ad C, à materiâ ſecundi elementi magis re
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motâ ab S quàm ea quae eſt in C, ac proinde celeriùs
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acta, ſitque ipſâ ſolidius, ut ſupponimus: non poteſt
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non habere majorem vim ad perſeverandum in ſuo
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motu ſecundùm lineam rectam tangentem
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cir
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culum; ſed ſtatim atque receſſit à puncto C, occurrit
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materiae ſecundi elementi celeriùs motae, quae illum
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nonnihil avertit à lineâ rectâ, ſimulque augendo ejus
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celeritatem efficit ut ulteriùs aſcendat ſecundùm lineam
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curvam C 2, quae eò minus diſtat à rectâ tangente,
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hoc ſidus ſolidus eſt, & quò majori cum celeritate de
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latum eſt ab N ad C. </
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CXXVI.
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De principio motûs
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Cometae. </
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Cùm autem per hunc vorticem AEIO hac ratione
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progreditur, tantam vim agitationis acquirit, ut facilè
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inde in alios vortices migret, atque ex his in alios.
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Notandumque eſt, cùm pervenit ad 2, egrediturque
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limites vorticis in quo eſt, ipſum adhuc aliquandiu
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retinere ejus materiam circa ſe fluentem, nec planè ab
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eâ liberari, donec ſatis altè in alium vorticem AEV
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penetrârit: nempe donec pervenerit ad 3. </
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modo ducit ſecum materiam hujus ſecundi vorticis </
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