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

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              nem æſtimari minorem. </s>
              <s>Deinde verò cùm per Theor: 19
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              ab intervallo grad: 60 motus centri fiat per tangentem circu­
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              li; neceſſe hanc librationem magis augeri. </s>
              <s>Vnde etiam ratio
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              petenda, quòd circulatio
                <expan abbr="quandoq;">quandoque</expan>
              fiat in partem plagæ maio­
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              ris: cùm videlicet duo orbiculi inæqualiter abſunt à lineâ mo
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              tûs centri: Hic enim oppoſita circulatio prævalet: quam deter­
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              minat motus centri per tangentem. </s>
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            <p type="main">
              <s>Poſſe verò miſceri motui recto circularem, manifeſtum in
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              eodem orbiculo; ſi convexâ parte tangat planum. á digito e­
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              nim compreſſus & eliſus
                <expan abbr="quandoq;">quandoque</expan>
              eidem puncto inſiſtens ro­
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              tari,
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              à procurſu recurrere, aut etiam retro agi vide­
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                <arrow.to.target n="fig23"/>
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              tur. </s>
              <s>Quòd ſi enim motus circularis fiat æqualis motui recto;
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              videbitur orbiculus in eodem puncto A circa immobile cen­
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              trum gyrari. </s>
              <s>Dividatur peripheria orbiculi in ſex partes æqua­
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              les
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              abcdef:
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              & ſumantur his æqualia ſegmenta in lineâ re­
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              ctâ
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              aghikl.
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              Cùm
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              motus in
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              ab
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              ſit æqualis motui centri
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              eiuſdem orbiculi in
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              ag;
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              gyratio autem non niſi per contactum </s>
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