Descartes, René
,
Renati Des-Cartes principia philosophiae
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LXXVII.
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Quomodo Solis lumen
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non modò verſus Ecli
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pticam, ſed etiam ver
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ſus polos ſe diſfundat. </
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Jamque id ſupra oſtensum eſt a de globulis contentis
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in triangulo, cujuſ baſis erat ſemicirculus eclipticae
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ſolaris, quamvis nondum ulla actio primi elementi
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ſpectaretur; ſed nun hoch ipsum de iiſdem, ſi
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mulque etiam de reliquis in toto cono contentis,
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hujus primi elementi ope clariùs patebit. </
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ejus pars, quae corpus Solis componit tam globulos
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ſecundi elementi qui ſunt verſus eclipticam
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e
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, quàm
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etiam eos qui ſunt verſus polos
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d, ſ
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, ac denique
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omnes qui ſunt in cono
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dHſ
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, verſus H propellit;
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neque enim ipſa majori vi movetur verſus
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e
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, quàm
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verſus
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d
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&
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ſ
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, aliaſque partes intermedias: illa verò
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quae jam ſupponitur eſſe in H, tendit verſus C, unde
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per K & L verſus S tanquam in circulum regrediatur.
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Ideoque non impedit ne globuli iſti ad H accedant, &
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eorum acceſſu ſpatium quod priùs ibi erat, corpori
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Solis accreſcat, impleaturque materià primi elementi,
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à centris K, L) & ſimilibus eò confluente. </
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LXXVIII.
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Quomodo verſus Ecli
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pticam ſe diffundat.</
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Quin ipſa potiùs ad hoc juvat; cùm enim omnis
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motus tendat in lineam rectam, materia maximè
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agitata in H exiſtens, magis propendet ad inde egre
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diendum quàm ad remanendum: quò enim ſpatium
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in quo verſatur eſt anguſtius, eò magis inflectere
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cogitur ſuos otus. </
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debet, quòd ſaepe, ad motum alicujus minutiſſimi cor
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poris, alia corpora, per quantumvis magna ſpatia
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diffuſa, ſimul moveantur; nec proinde etiam, cur non
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tantùm Solis, ſed & Stellarum quam-maxim remota
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rum, actio ad terram uſque in minimo temporis mo
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mento perveniat </
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