Descartes, René
,
Renati Des-Cartes principia philosophiae
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coeleſtes paullò minores, ac proinde quos ſuperaret vi
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ad recedendum à centro circa quod gyrat; & celeriùs
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motos, ac proinde à quibus iſta ejus vis ſimul cum agi
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tatione augeretur, ſicque inde rurſus regredi debe
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ret. </
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globuli coeleſtes aliquantò minùs celeriter moti, ac
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proinde qui ejus agitationem minuerent; & paullò
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majores, ac proinde qui vim haberent ipſum verſùs
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Solem repellendi. </
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CXL.
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De principio motùs
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Planetoe.</
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Aliae autem cauſſae, qu Planetam circa Solem ita
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libratum nonnihil hinc inde propellunt, ſunt: primò,
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quòd ſpatium, in quo ſimul cum totâ materiâ coeli ro
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tatur, non ſit perfectè ſphaericum; neceſſe eſt enim,
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ubi hoc ſpatium latius eſt, ut iſta materia coeli lentiùs
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fluat, quàm ubi anguſtius. </
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CXLI.
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Cauſſoe, à quibus ejus
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errores pendent. Pri
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ma. </
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Secundò a, quòd materia primi elementi, ex qui
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buſdam vicinis vorticibus verſùs centrum primi coeli
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fluendo, & inde ad quoſdam alios refluendo, tum
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globulos ſecundi elementi, tum etiam Planetam inter
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ipſos libratum, diverſimodè poſſit commovere. </
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CXLII.
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Secunda. </
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Tertiò, quòd meatus qui ſunt in corpore iſtius
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Planetae, aptiores eſſe poſſint ad particulas ſtriatas
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aliaſve primi elementi quae ex certis coeli partibus
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veniunt, quàm ad reliquas, recipiendas: unde fit,
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ut iſtorum meatuum orificia, quae circa polos macu
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larum ſidera involventium ſormari ſuprà diximus,
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verſùs iſtas cceli partes potiùs quàm verſùs alias ob
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vertantur. </
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