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

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              <s id="id.000341">
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              nia exæquantur eidem tempori deſcenſus ex B in A: id­
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              que cùm ſit eadem ratio dimidiæ ad dimidiam, quæ
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              totius ad totam. </s>
              <s id="id.000342">Neque id debet tam in hoc, quàm
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              ſuperiore Elicito videri mirum; quoniam, vt nulla eſt
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              diuerſitas in motu perpendiculari, ſeu qui eſt ſursùm,
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              ac deorſum, quatenùs tantundem ſemper aſcenditur,
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              deſcenditurque; & diſcrimen ſolùm eſt in motu hori­
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              zontali, ſiue qui eſt prorsùm, quatenùs citeriùs, vlto
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              riúſque proceditur: ita vis impellens ſurſum, quæ à
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              proijciente, vt propria emanat, eſt vniformis ſemper, ac
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              eadem; & contrà vis impellens prorsùm, quæ, vt tranſla­
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              titia à nauis motu imprimitur, inæqualis eſt, & pro rati­
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              one tarditatis, aut velocitatis nunc minor, nunc major. </s>
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            <p type="main">
              <s id="id.000343">Elicio
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              duo decimò,
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              quacúmque vi aliquid ſursùm ex
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              pede mali, donec mouetur, proijciatur, id ad pedem
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              mali ſemper recaſurum. </s>
              <s id="id.000344">Quippe, ſeu ad ſummum ma­
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              lum non perueniat, ſeu vlteriùs longè prouehatur,
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              deſcribit ſemper lineam parabolicam, in qua, vbicúm­
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              que exſiſtat, reperitur ſemper in eadem diſtantia vel à
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              malo, vel à linea ſurſum à malo ſecundum illius lon­
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              gitudinem produci concepta. </s>
              <s id="id.000345">Nec te verò motetur
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              globus bellico tormento è pede mali ſurſum exploſus;
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              nam par omninô ratio eſt. </s>
              <s id="id.000346">Et quamuis obſtare videa­
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              tur rectitudo fiſtulæ; nihilominùs, quia globus, quan­
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              tumcúm que tempore ſenſum fugiente fiſtulam perua­
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              dat, peruadit tamen ſucceſſiuè, eſt que reipſà priùs in
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              inferioribus eius partibus, quàm in ſuperioribus; inde
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              fit, vt cùm fiſtula per hæc priora, & poſteriora mo­
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              menta, moueatur interim ad motum nauis; idcircô
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              globus, preter motum ſurſum, promoueatur etiam in-</s>
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          </chap>
        </body>
      </text>
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