Descartes, René
,
Renati Des-Cartes principia philosophiae
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iſtos vortices ita eſſe ſitos, ut materiam illam in par
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tes directè oppoſitas mittant, nec alios vortices, pri
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mum coelum verſus ejus eclipticam tangentes, certum
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aliquem ipſius circulum, qui pro eclipticà ſumi poſſit,
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eodem modo reſpicere, materiamque ex S per omnes
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partes iſtius circuli, aliaſque ipſi vicinas egredientem,
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pari facilitate in ſe admittere: non tamen inde ullae
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inaequalitates in figurâ Solis argui poitunt, ſed tantùm
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in ejus ſitu, motu & quantitate. </
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>Nempe ſi vis materiae
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primi elementi, venientis à polo A verſus S, major
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ſit quàm venientis à polo B, illa quidem materia
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priuſquam alterius occurſu repelli poſſit, longiùs
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progredietur verſus B, quàm haec altera verſus A; ſed
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ita longiùs progrediendo, ejus vis minuetur; ac juxta
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leges naturae, ſe mutuò tandem ambae repellent illo in
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loco, in quo earum vires erunt inter ſe planè aequales,
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atque ibi corpus Solis conſtituent: quod proinde re
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motius erit à polo A, quàm à polo B. </
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vi pellentur globuli ſecundi elementi, in ejus circum
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ferentiae parte
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d
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, quàm in parte
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ſ
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, nec ideò circumfe
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rentia iſta minùs erit rotunda. </
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>Item, ſi materia primi
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elementi faciliùs egrediatur ex S verſus O, quàm ver
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ſus C (illic ſcilicet liberius ſpatium inveniendo), hoc
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ipſo corpus S nonnihil accedet verſus O, & iſlo acceſſu
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ſpatium interjectum minuendo, ibi tandem ſiſtetur,
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ubi vis erit utrimque aequalis. </
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ſolos quatuor vortices L, C, K, O, reſpiceremus, modò
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tantùm eos ſupponamus eſſe inter ſe inaequales, inde
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ſequitur, Solem S, nec in ſpatio medio inter O & C,
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nec etiam in medio inter L & K, eſſe debere. </
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<
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que adhuc in ejus ſitu inaequalitas poteſt intelligi </
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