Descartes, René
,
Renati Des-Cartes principia philosophiae
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meatus, aliâ materiâ ſolidiori repletos, intelligimus;
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&sfiguram obtinent ſphaericam, quae omnium mini
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mum habet ſuperficiei, pro ratione molis ſub ſe con
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tentae, ut Geometris eſt ſatis notum. </
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>Et praeterea,
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quamvis ſit permagna diſparitas inter ipſorum exigui
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tatem & magnitudinem alicujus ſideris, haec tamen
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ex parte compenſatur, eo quòd non vires ſingulorum
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ex iſtis globulis, ſed plurium ſimul, iſtius ſideris viri
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bus opponantur. </
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>Cùm enim illi cum aliquo ſidere
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circa centrum S rotantur, tenduntque omnes, nec
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non etiam iſtud ſidus, ut ab S recedant, ſi vis inde
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recedendi, quae eſt in ſidere, ſuperet vires ſimul junctas,
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quae ſunt in tot ex iſtis globulis, quot requiruntur ad
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ſpatium quod ſidus occupat replendum: tunc ipſum
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recedet ab S, efficietque ut iſti globuli in locum ſuum
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deſcendant; & contrà, ſi illi plus habeant virium,
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ipſum verſùs S expellent. </
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CXXIII.
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Quomodo globuli coe
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leſtes integro aliquo
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ſidere ſolidiores eſſe
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poſſint. </
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Fieri enim etiam facilè poteſt, ut ſidus N multò plus
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habeat virium ad perſeverandum in ſuo motu ſecun
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dùm lineas rectas, quàm globuli materiae coeleſtis
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ipſum circumjacentes, etiamſi minùs materiae tertii
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elementi in eo contineatur, quàm ſecundi, in tot ex
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iſtis globulis, quot requiruntur ad ſpatium ipſi aequale
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occupandum. </
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varios habeant motus, quamvis junctis viribus in illud
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agant, non poſſunt tamen omnes ſuas vires ita ſimul
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jungere, ut nulla earum pars inutilis fiat: contrà
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autem omnis materia tertii elementi, ex quâ maculae
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hoc ſidus involventes ae
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rque ipſum ambiens compo
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nuntur, unam tantùm maſſam facit, quae cùm tota
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ſimul moveatur, tota etiam vis, quam habet ad </
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