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

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              exprimendum fuit) eadem continuò erit progreſſio
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              quinarii numeri cum quadrante, ſeu dr. </s>
              <s id="s.001214">2; vt putà, ſeu
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              dicas 4.2, 9.4, 14.6, 20, 25.2: ſeu 6.2, 11.4, 16.6, 22, 27.2.
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              Sed res eſt per ſe ſatis manifeſta. </s>
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              Nunc autem, Vir perſpicacißime, cùm in ea tota re
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              diligentiam tuam, ac ſolertiam vehementer probem, & exa­
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              ctiorem adhûc à te exſpectem; perinde probare non poſſum
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              quæ ſequuntur reliqua: & primùm quod ais numero xxviii.
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              </s>
              <s id="s.001216">fore, vt ſi penes globorum diametros menſurandæ eſſent eo­
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              rum velocitates, demißi ex eadem altitudine globi duo eiuſ­
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              dem materiæ, ſed mole inæquales, pari celeritate non deſcen­
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              derent. </s>
              <s id="s.001217">Ponis autem exempli gratiâ duos globos, quorum
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              vnus ſit diametro decies maiore, quàm alter, & minorem
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              hunc dicis decuplò velociùs altero moueri. </s>
              <s id="s.001218">Sed ſagacitas tua
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              hoc loco non aduertit primùm, à maiore globo vnius diametri
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              deſcenſu tantum velocitatis acquiri, quantum à minore globo
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              decem diametrorum deſcenſu acquiritur: nihilque omninò re­
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              ferre, ſi è duabus velocitatibus inter ſe æqualibus altera plu­
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              reis in parteis ſubdiuidatur, quæ ſimùl iunctæ alteram exæ­
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              quent; ſicut nec ratio acceleratæ velocitatis per quodlibet
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              spatium variabitur, ſi partes eiuſdem ſpatij æquales ab vno
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              minores deſignentur, ab altero maiores. </s>
              <s id="s.001219">Deinde, illud etiam
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              non aduertit, vt ſi penes spatii parteis æqualeis in quacumque
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              ratione acceptas, accelerationis velocitas menſuretur, futurum
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              omninò ſit, vt perinde eorumdem globorum diametris ea­
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              dem quoque accelerationis velocitas menſuretur; præſertim ſi
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              diametri (vt in propoſito exemplo) ſupponantur commenſu­
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              rabiles; quod & ex ipſa rei natura, & ex proximè adducto
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              eius exemplo, qui ſpatium quodlibet, per quod fieret deſcenſus,
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              nunc maiores in parteis diuideret, nunc in minores, euidenter
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