Descartes, René
,
Renati Des-Cartes principia philosophiae
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eorum vorticese iam debent eſſe ita inter ſe compo
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ſiti ut unuſnuiſque in eam partem feratur, ſecundùm
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quam reliquorum omnium circumſtantium motus mi
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nùs illi adverſantur: quia tales ſunt leges naturae a, ut
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motus cujuſque corporis alterius occurſu facile poſſit
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inflecti. </
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>Quamobrem ſi ponamus primum vorticem,
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cujus centrum S, ferri ab A per E verſus I, alius vor
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tex ei vicinus, cujus centrum F, ferri debet ab A per E
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nulli alii circumjacentes impediant: ſic
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enim eorum motus optimè inter ſe conſentient. </
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demque modo tertius vortex, cujus centrum non ſit in
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plano SAFE, ſed ſupra illud extans, cum centris S &
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F triangulum conſtituat, & qui duobus aliis vortici
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bus AEI & AEV in lineâ AE jungatur b, ferri debet
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ab A per E ſurſum verſus. </
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>Quo poſito quartus vortex,
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cujus centrum
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ſ, ferri non poteſt ab E verſus I, ut ejus
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motus conveniat cum motu primi quia ſic adverſa
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retur motibus ſecundi & tertii; nec ab E verſus V,
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quemadmodum ſecundus, quia repugnarent primus &
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tertius; nec denique ab E ſurſum verſus, ut tertius,
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quia repugnarent primus & ſecundus: atque ideò ſu
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pereſt, ut unum ex polis ſuis habeat verſus E alium
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que in parte oppoſità verſus B, vertaturque circa
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axem EB, ab I ad V. </
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LXIV.
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Omnes lucis proprieta
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tes in iſto conatu in
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veniri: adeò ut lux
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ejus ope cerni poſſet
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tanquam ex ſtellis
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mánans, etſi nulla vis
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eſſet in ipſis ſtellis. </
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LXV.
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Cujuſque vorticis coelo-</
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rum polos, tangere
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partes aliorum vor
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ticum ab eorum polis
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remotas. </
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Atque hîc etiam notari debet, nonnihil adhuc con
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trarietatis in iſtis motibus fore, ſi trium priorum
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vorticum eclipticae, hoc eſt, circuli à polis remo
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tiſſimi, ſibi mutuò direat occurrant in punao E, in
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quo ſit polus quarti vorticis. </
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<
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>Nam ſi, exempli cauſâ, </
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