Marci of Kronland, Johannes Marcus, De proportione motus figurarum recti linearum et circuli quadratura ex motu, 1648

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              <s>
                <pb xlink:href="063/01/108.jpg"/>
              autem fit cùm medium reſiſtit: & quia in vacuo nihil reſiſtit;
                <lb/>
              interminabilis eſſet in eo motus: in aquâ verò ob reſiſtentiam
                <lb/>
              maiorem, priùs quàm in aëre abſumitur. </s>
              <s>Reſiſtentia autem
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              fit cùm vel diviſio, vel gravitas mobilis, vel retentio obſtat
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              motui. </s>
              <s>Ita ergo per plures chartas aliquo intervallo ſeiun­
                <lb/>
              ctas tranſit glans plumbea,
                <expan abbr="quouſq;">quouſque</expan>
              ex illâ diviſione continu­
                <lb/>
              atâ impetus laſſetur. </s>
              <s>Aut cùm plagam recipit gravitas maior
                <lb/>
              à minori: aut cùm mobile à maiori vi detinetur, quò minùs
                <lb/>
              motum proſequi valeat. </s>
              <s>Detinetur autem mobile ſeu à gra­
                <lb/>
              vitate coniunctâ, ſeu vi retentivâ: ut ſi Miloni digitum infle­
                <lb/>
              ctere, aut pomum illius manu concluſum extorquere cone­
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              mur: illa enim retentio ab impulſu fluente, & veluti librato
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              procedit: qui non niſi à maiori impulſu poteſt ſuperari. </s>
              <lb/>
              <s>Cui ſimilis videtur retentio ex anguſtiâ loci inducta: ut dum
                <lb/>
              clavus in pariete fixus detinetur. </s>
              <s>Quò enim maior anguſtia;
                <lb/>
              eò tranſitus magis difficilis, & non niſi maiori vi ſuperandus.
                <lb/>
                <expan abbr="Itaq;">Itaque</expan>
              fit, ut licet eiuſmodi rima toto illo tractu æqualiter ex­
                <lb/>
              currat, impetus tamen priuſquam totam tranſeat, exſolvatur:
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              retentio enim illa continuata non aliter, quàm ſi plaga produ­
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              ceretur, impulſum atterit & abſumit:
                <expan abbr="atq;">atque</expan>
              eò magis, quò ſtri­
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              ctura magis coarctat. </s>
              <s>
                <expan abbr="Neq;">Neque</expan>
              aliâ ratione detineri videtur ba­
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              ſis à gravitate illorum orbiculorum, qui baſi incumbunt; fit
                <lb/>
              enim compreſſio illi ſimilis, quam loci anguſtia inducit. </s>
              <s>
                <expan abbr="Itaq;">Itaque</expan>
                <lb/>
              ſi augeatur numerus, aut pondus orbiculorum; quia magis
                <lb/>
              comprimitur baſis, non niſi maiori vi excuti poteſt. </s>
              <s>Cùm
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              ergo duo orbiculi ſimul iuncti moventur: quia compreſſio fit
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              baſis continuata, licet impulſus, quo baſis movetur ſit æqualis;
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              ob illam tamen gravitatem acceſſoriam, priùs terminat mo­
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              tum. </s>
              <s>Quam inæqualitatem motûs adiuvare videtur ſcabri­
                <lb/>
              ties loci, ſeuplani, quod tanſit:
                <expan abbr="atq;">atque</expan>
              inde fit quòd
                <expan abbr="quandoq;">quandoque</expan>
              in
                <lb/>
              medio motu orbiculi circumaguntur. </s>
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        </body>
      </text>
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