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. </s>
              <s>Et quoniam ii qui
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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. </s>
              <s>Etſi enim
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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. </s>
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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. </s>
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              5</s>
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              10</s>
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              15</s>
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              20</s>
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            <figure id="fig15" number="15"/>
            <p type="main">
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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. </s>
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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 </s>
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