Descartes, René
,
Renati Des-Cartes principia philosophiae
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quia alii vortices circumjacentes non ſunt aequals,
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tum etiam quia illud debet eſſe anguſtius, è regione
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centri a cujuſque ex iſtis vorticibus vicinis, quàm è re
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gione aliarum ejus partium: neceſſe eſt ut aliquando
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quaedam ex ipſis celeriùs quàm aliae molveantur,
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nempe ordinem debent mutare, ut ex vià latiori tran
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ſeant in anguſtiorem. </
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>Sic, exempli cauſà, duo globi qui
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ſunt inter puncta A & B,
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non poſſunt tranſire inter
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duo viciniora C & D
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unus alium proecedat; &
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manifeſtum eſt eum qui prae
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cedit altero celerius mo
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veri. </
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globuli primi coeli totâ
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vi recedere conantur à centro S, ſtatim atque aliquis
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ex ipſis celeriùs quàm vicini movetur, ille, hoc ipſo
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majorem habens vim, magis à centro illo recedit; &
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ita ſemper ſuperiores illi ſunt qui celeriùs moventur. </
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Quanta autem ſit iſta eorum celeritas,
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experien
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tia docere poteſt nullamque habemus ejus experien
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tiam, niſi in Cometis, quos ex uno ccelo in aliud
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migrare infrà oſtendam b; ut neque poſſumus determi
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nare tarditatem circuli HQ, niſi ex motu Saturni,
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quem in illo vel infra illum eſſe demonſtrabo c.
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LXXXIII.
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Cur remotiſſimi cele
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riùs moveantur quàm
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aliquantò minùs re
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moti. </
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Quòd verò, infra termininum HQ, globuli propiores
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centro S celeriùs circulum ſuum abſolvant quàm </
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