Descartes, René
,
Renati Des-Cartes principia philosophiae
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hoc centrum T eſſe debere inter M & D: quia, cùm
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materia coeleſtis hujus vorticis aliquantò celeriùs mo
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veatur quàm Luna vel Terra, quas ſecum deſert, niſi
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punctum T aliquanto magis diſtaret à B quàm à D,
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Lunae praeſentia impediret, ne illa tam liberè
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poſſet inter B & T, quàm inter T & D; cùmque locus
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Terrae in iſto vortice non determinetur, niſi ab aequa
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litate virium materiae coeleſtis eam circumfluentis,
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evidens eſt ipſam idcirco nonnihil accedere debere
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verſus D. </
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>Atque eodem modo, cùm Lunâ erit
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C,Ter
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rae centrum eſſe debebit inter M & A: ſicque ſemper
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Terra nonnihil à Lunâ recedit. </
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pacto, ex eo quòd Luna ſit verſus B, non modò ſpatium
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per quòd materia coeleſtis fluit inter B & T, ſed etiam
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illud per quòd fluit inter T & D, redditur anguſtius:
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inde ſequitur iſtam materiam coeleſtem ibi celeriùs
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fluere, atque ideò magis premere, tum ſuperficiem ae
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ris
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in 6 & 8 tum ſuperficiem aquae in 2 & 4, quàm ſi Luna
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non eſſet in vorticis diametro BD; cùmque corpora
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ae
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ris & aquae ſint fluida, & facilè preſſioni
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obſe
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quantur, ipſa minùs alta eſſe debere ſupra Terrae partes
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F & H, quàm ſi Luna eſſet extra hanc diametrum BD;
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ac è contrà eſſe altiora verſus G & E, adeò ut ſuperfi
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cies aquae 1, 3, & ae
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ris 5, 7, ibi protuberent. </
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XLVII.
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De violentâ ejus com
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preſſione in quibuſ
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dam machinis. </
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Jam verò, quia pars Terrae quae nunc eſt in F,
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re
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gione puncti B, ubi mare eſt quam-minimè altum,
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poſt ſex horas erit in G, e regione pun`cti C, ubi eſt al
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tiſſimum & poſt ſex alias horas in H, e regione puncti
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D, atque ita conſequenter; vel potiùs, quia Luna etiam
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interim nonnihil progreditur à B verſus C, utpote
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menſis ſpatio circulun ABCD percurrit, pars Terrae </
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