Fabri, Honoré, Dialogi physici in quibus de motu terrae disputatur, 1665

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            <p type="main">
              <s id="s.000778">
                <pb pagenum="69" xlink:href="025/01/073.jpg"/>
              ſpatium, quod mobile acquirit, tempore AE, ita linea BF repræſentat
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              ſpatium, in que fuit inſtanti B; & CG, ſpatium, in quo fuit inſtanti
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              C &c. </s>
              <s id="s.000779">In hypotheſi inſtantium phyſicorum hæc difficultas omnino ceſ­
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              ſat; ſed ne huc accerſam integram, & benè longam tractationem, in
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              qua natura temporis & motus explicanda eſſet, conſule, ſi vis, Chry­
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              ſocome, tractatum noſtrum, de motu locali; itemque Metaphyſicam
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              non vno loco, ibi enim hoc munere perfuncti ſumus, quo certè in præ­
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              ſenti congreſſu perfungi non vacat. </s>
              <s id="s.000780">Addo tantùm, hypotheſi Coperni­
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              canæ nihil obſtare motum acceleratum, vt dicebas, ſicuti eidem mo­
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              tui non obſtat navis motus, vt pluſquam mille experimentis comproba­
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              tum eſt. </s>
            </p>
            <p type="main">
              <s id="s.000781">
                <emph type="italics"/>
              Auguſtin.
                <emph.end type="italics"/>
              </s>
              <s id="s.000782"> Rectè omninò, nempe corpus grave deſcenderet, motu
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              quodam mixto, ex æquabili, & accelerato; in navi exemplum luculen­
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              tum eſt, immò & in diſco projecto per inclinatam ſurſum, qui non mo­
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              dò per curvam ſurſum aſcendit, verùm etiam per curvam deorſum ruit
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              & licèt æqualia ſpatia in dicta curva æqualibus temporibus omnino de­
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              currat, ſaltem ad ſenſam, hoc tamen non obſtat, quin ratione perpen­
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              dicularis, in quam vi motus naturalis inclinat, & in qua majora ſpa­
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              tia decurrit. </s>
              <s id="s.000783">eodem prorſus modo quo fieret, ſi motus naturalis cum alio
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              horizontali conjunctus non eſſet; hoc inquam non obſtat, quin ratio­
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              ne perpendicularis, dictum corpus grave motu accelerato moveatur; ſed
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              ſi motus acceleratus eſt, creſcit. </s>
              <s id="s.000784">impetus; hinc major ictus &c. </s>
              <s id="s.000785">Non
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              creſcunt ſpatia, inquies; Reſpondeo: non creſcunt in horizontali, con­
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              cedo: vnde ratione horizontalis, eſt motus æquabilis; non creſcunt in per­
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              pendiculari, nego; ſed profecto ſi non creſceret impetus, in perpendicula­
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              ri ſpatia non creſcerent. </s>
            </p>
            <p type="main">
              <s id="s.000786">
                <emph type="italics"/>
              Antim.
                <emph.end type="italics"/>
              </s>
              <s id="s.000787"> Omitte quæſo hæc argumenta, à motu gravium, vel levium
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              petita, quæ ſanè multiplicem paralogiſmis materiam nonnullis præ­
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              buerunt, quos aliis, amabo diſcutiendos relinquamus, præſertim, cùm
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              mediocriter doctis, & iſtarum rerum peritis cuncta hæc perſpecta ſint;
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              vnum tantùm: in quo non nemo maximam vim facit, obiter indico;
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              ſi moveatur terra, inquit, explodaturque catapulta, vel quodlibet
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              aliud projectionis organum, versùs polum directè, globus projectus
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              incidet in planum oppoſitum obliquè; igitur vis ictus longe minor erit,
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              quàm ſi explodatur versùs ortum, vel occaſum; quod tamen expe­
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              rimentis repugnat: Sed facilè reſpondeo, dicti globi exploſi motum
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              mixtum eſſe ex duobus, altero communi aliis partibus terræ, versùs
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              ortum, altero impreſſo à machina versùs polum; vterque totum effe­
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              ctum habet, qui ſibi competit; eſt enim reverà duplex impetus, quo­
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              rum vnus independenter ab alio id totum præſtat, quod præſtare po­
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              teſt; clariſſimum exemplum habemus in navi; vnde argumentum illud
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              facilè ſolvitur, nempe ictus per lineam obliquam minor eſt, quando
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              vnus tantùm impetus ineſt, ad talem lineam determinatus; at verò quan­
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              do duplex impetus ineſt, & alter per directam lineam determinatus eſt, ſive
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              alius inſit, five non, æqualis ictus infligitur. </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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