Gassendi, Pierre, De proportione qua gravia decidentia accelerantur, 1646

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              deducam: quamvis iam etiam aliunde id haberes; ex eo nimi­
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              rùm, quod diuiſo, vt libet, in parteis æqualeis tempore, aut
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              ſpatio, ſemper impoßibile ſit, vt velocitas ſecundæ partis præ­
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              cisè dupla ſit totius velocitatis per priorem partem acquiſitæ:
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              quod ex tuis etiam principiis anteà numero
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              17.
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              euidenter de­
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              monſtratum eſt.
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            <p type="main">
              <s id="s.001561">Et ſæpe repetij, & repetere ſæpiùs cogis me, quæ­
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              ſtionem non eſſe, an impoſſibile ſit velocitatem per
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              ſecundam partem eſſe præcisè duplam velocitatis per
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              primam: ſed id-ne ſequatur ex admiſſo principio, quòd
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              velocitates vt ſpatia ſe habeant. </s>
              <s id="s.001562">Ego enim ſemper id
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              ſequi conteſtatus ſum: tu non ſequi probaſti nun­
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              quam; & perinde ſemper procedis, ac ſi id habendum
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              eſſet nihili; quod ipſum tamen eſt rei caput. </s>
              <s id="s.001563">An, &
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              quomodo aliquid ex meis principijs demonſtraueris;
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              nihil eſt quam obrem heic repetatur. </s>
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              Cæterùm hoc etiam loco erras non mediocriter, dum ex
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              eo, quòd partes NC, & CD eodem tempore percurrun­
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              tur, talem gradum velocitatis acquiri concludis ab N in
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              C, qualis acquiritur à C, in D: tunc enim velocitates eſſe
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              vt spatia neceſſe eſt.
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              <s id="s.001565">Quàm egregiè elaberis? </s>
              <s id="s.001566">Ego enim cætera inter,
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              quæ non attigiſti, ex eo, quòd priùs admiſiſſes, pro­
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              pter progreſſionem Arithmeticam, duorum graduum
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              acquiſitorum in D, vnum acquiſitum ab A, in C, alte­
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              rum à C, in D, concluſi te velle velocitatem acquiſi­
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              tam ab N in C, eſſe æqualem acquiſitæ à C, in D,
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              quandoquidem tum velles ipſam CD tanto tempore,
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              quanto NC, cuius eſſet dupla, percurri. </s>
              <s id="s.001567">Et quia vi­
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              deris non attendiſſe ad conſequutionem, quæ ſatis </s>
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