Descartes, René
,
Renati Des-Cartes principia philosophiae
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in lineâ rectà SE, premere ſe verſus E, atque ita de cae
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teris: adeò ut, ſi non ſint ſatis multi ad occupandum
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omne ſpatium inter S & circumferentiam AEI, totum
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quod non occupant, relinqua
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tur
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verſùs S. </
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ſibi mutuò incumbunt (exem
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pli cauſà, ii qui ſunt in lineâ
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rectâ SE), non omnes inſtar
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baculi ſimul vertuntur, ſed uni
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Citiùs, alii tardiùs circuitum
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ſuum abſolvunt, ut infrà fuſiùs
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exponetur a, ſpatium quod re
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linquunt verſus S, non poteſt
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non eſſe rotundum. </
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fingeremus plures globulos initio fuiſſe in lineà rectâ
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SE, quàm in SA vel S 1, adeò ut inſimi lineae SE vici
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niores eſſent centro S, quàm infimi lineae SI: quia
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tamen infimi illi citiùs circuitum abſolviſſent quàm
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ſuperiores, nonnulli ex ipſis adjunxiſſent ſe ſtatim ex
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tremitati lineae SI, ut ſic tantò magis recederent ab S;
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ideòque nunc omnes infimi iſtarum linearum aequali
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ter remoti ſunt à puncto S, & ita ſpatium BCD, quod
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circa illud relinquunt, eſt rotundum. </
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LXI.
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Ipſum efficere, ut cor
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pora Solis & Fixa
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rum ſint rotunda. </
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Praeterea notandum eſt, non modò globulos omnes
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qui ſunt in lineà rectà S E, ſe invicem premere verſus
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E; ſed etiam unumquemque ex ipris premi ab omni
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bus aliis, qui continentur inter lineas redas ab illo
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ad circumferentiam BCD ductas, & ipſam tangentes. </
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Ita, exempli cauſâ, globulus ſ premitur ab omnibus
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aliis, qui ſunt intra lineas B ſ & Dſ, ſive in ſpatio </
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