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

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s id="id.000588">
                <pb pagenum="72" xlink:href="027/01/079.jpg"/>
              quædam angulo oppoſitæ, DE, FG, HI, KL, &
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              plures, ſi velis; itemque diuiſa in totidem parteis
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              KL, ducantur parallelæ DM, FN, HO; & EO,
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              GN, IM: diſpeſcetur ſpatium in eos, quos vides
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              triangulos, inter ſeſe omninò pareis. </s>
              <s id="id.000589">Concipe iam
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              lineas ab angulo incipientes repræſentare tempus ab
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              aliquo puncto æquabiliter fluens, & parteis linearum
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              æqualeis repræſentare æqualeis parteis, ſiue mo­
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              menta temporis. </s>
              <s id="id.000590">Concipe rurſùs interuallum vnifor­
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              miter creſcens repræſentare velocitatem vniformi­
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              ter increſcentem, & quos pareis triangulos vides,
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              totidem gradus velocitatis, & conſequenter parteis
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              ſpatij, quod graue decidens percurrit. </s>
              <s id="id.000591">Tunc agnoſ­
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              ces ſanè, cùm in primo momento ſit vnus gradus
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              impetus, ſeu velocitatis, acquiri in ſecundo treis, in
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              tertio quinque, in quarto ſeptem, qui progreſſus eſt
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              numerorum ab vnitate imparium. </s>
              <s id="id.000592">Et aliunde, ſi du­
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              cas lineam, quæ diuiſa in ſexdecim parteis referat
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              orgyiarum ſexdecim altitudinem; agnoſces cur gra­
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              ue in fine primi momenti deſcenderit vnam orgyiam,
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              in fine ſecundi quatuor, in fine tertij nouem, in fine
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              quarti ſexdecim: quia nempe ita ſe habere aggre­
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              gando intelliguntur memorati trianguli in fine
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              cuiuſque repræſentati momenti. </s>
              <s id="id.000593">Agnoſces quoque,
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              cur idem graue ſurſùm projectum ſecundum ean­
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              dem lineam tanto tempore aſcendat, quanto deſ­
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              cendit, & velocitas motus eius eadem ratione aſcen­
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              dendo decreſcat, qua deſcendendo increſcit Quia
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              ſi ſupponas vim proiectricem indidiſſe illi ſeptem ve­
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              locitatis gradus, vt ſunt ſeptem trianguli ad infi-</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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