Descartes, René
,
Renati Des-Cartes principia philosophiae
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lus eſſet in C, & ad Y cùm baculus eſſet in G atque
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ita ipſa ſemper exiſteret in lineâ rectâ ACG. </
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deinde conferamus etiam eam vim, quâ idem lapis,
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actus in ſundà ſecundùm lineam circularem ABF, re
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cedere conatur à centro E, ſecundùm lineas rectas
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AD, BC, ſG, cum conatu qui remaneret in formicâ,
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ſi vinculo vel glutino aliquo detineretur in puncto A
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ſupra baculum EY, dum interim iſte baculus eam de
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ferret circa centrum E per lineam circularem ABF;
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ac ipſa totis viribus conaretur ire verſùs Y, atque ita
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recedere à centro E ſecundùm lineas rectas EAY,
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EBY, & ſimiles. </
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LVIII.
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Quomodo ea quae cir
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culariter moventur,
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conentur recedere à
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centro ſui motûs. </
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Scio quidem motum iſtius formicae fore initio tar
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diſſimum, atque ideò ejus conatum, ſi tantùm ad prin
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cipium motùs referatur, non videri magnum eſſe poſſe:
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atqui profectò non plan nullus eſt, & dum ſortitur
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effectum, augetur, ado ut motus ex eo proveniens ſa
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tis celer eſſe poſſit. </
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>Nam, ut adhuc alio utamur exem
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plo, ſi E Y ſit canalis, in
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globulus A contineatur, pri
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mo quidem temporis mo
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mento, quo iſte canalis age
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tur in gyrum circa centrum
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E, globulus A motu tantùm
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tardiſſimo progredietur ver
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ſus Y; ſed ſecundo momento
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paulò celeriùs incedet: priorem enim vim retinebit,
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ac praeterea novam acquiret à novo conatu recedendi
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à centro E: quia, quandiu durat motus circularis,
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tamdiu ille conatus durat, & quaſi renovatur ſingulis
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momentis. </
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