Gassendi, Pierre, De motu impresso a motore translato epistulae duae, 1642

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        <body>
          <chap>
            <p type="main">
              <s id="id.000558">
                <pb pagenum="67" xlink:href="027/01/074.jpg"/>
              terit, quæ motus initium in lapide faciat. </s>
              <s id="id.000559">Concipe
                <lb/>
              denique reſtitui aërem ſimùl cum effluuio; & per­
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              uidebis lapidem poſſe adhûc à quieſcendo deſiſte­
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              re, ac verſus Terram allici, quòd tametſi aër inferior
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              (ſeu qui ſub ipſo) nonnihil reſiſtat, propter qualem­
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              cúmque corpulentiam; nihilo minùs vis attractrix tan­
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              ta eſſe valeat, quæ & ciendo lapidi, & ſuperandæ
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              aëris reſiſtentiæ ſufficiat. </s>
              <s id="id.000560">Igitur cauſa hæc attrahens
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              habere poteſt vnde id ſuppleat, quod viſum eſt im­
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              pellenti deeſſe. </s>
              <s id="id.000561">Secundò, ſi id repetas, quod di­
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              ctum eſt de lapide in ſpatiis illis imaginariis, ſeu in
                <lb/>
              inani conſtituto; concipis iam, ſi cauſa quæpiam le­
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              uiculo ictu eum pellat, fore vt moueatur æquabili
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              planè, ac perpetuo motu, niſi obex occurrerit.
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              </s>
              <s id="id.000562">Concipe deinde, cùm ita mouetur, pelli ictu con­
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              ſimili; tunc quia motus præcedens non deſtruetur,
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              coïbunt duo motus in vnum, qui ſit priore velocior
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              duplò, quique pari modo ſit futurus ex ſe æquabi­
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              lis, atque perpetuus. </s>
              <s id="id.000563">Concipe rurſùs pelli tertio, &
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              conſimili ictu; tunc quia prior motus ex duobus
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              quaſi gradibus compoſitus perſeuerabit, fiet coa­
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              litio noui motus ſeu gradus; ſiue erit deinceps mo­
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              tus, qui ſit triplò velocior primo. </s>
              <s id="id.000564">Concipe poſteà
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              pelli quarto, pelli quinto, & aliis; agnoſceſque fore,
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              vt velocitas tantùm, ac tandiu incrementum accipiat,
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              quantùm, & quandiù ictus repetentur. </s>
              <s id="id.000565">Niſi facilè d
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              concipias, conſtitue exquiſitum globum ſupra ex­
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              quiſitam, libellatámque planitiem, & leui primum
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              ictu eum impelle; deprehendes moueri ipſum peni­
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              tùs æquabiliter. </s>
              <s id="id.000566">Impelle alio pari ictu; deprehendes </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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