Marci of Kronland, Johannes Marcus, De proportione motus, seu regula sphygmica ad celeritatem et tarditatem pulsuum, 1639

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              <p id="N142A3" type="main">
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                jus circulum maximum; globus ergo major plagam in­
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                ducit minorem, quàm ut ſit dupla ad plagam minoris
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                globi: ut ſi globus major ſit duarum lib: erit ſemiſsis, id­
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                eſt lib: una, æqualis globo minori; hujus verò plaga ſe­
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                miſsis plagæ totius minor plagâ totá globi minoris. quia
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                ergò plaga tollit partem ſibi æqualem, maius erit decre
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                mentum velocitatis in librà unà, dum extra illud totum,
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                ſeu globum maiorem & per ſe, ideſt in globo minori mo
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                uetur. </s>
                <s id="N1439F">Et quia in medio ſimilari eadem plaga continu­
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                atur, eadem ratio erit decrementi quæ interualli; ut ſi in
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                toto motu deficiat cubitus unus, deficiet in ſemiſſe hu­
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                jus motus illius ſemiſsis:
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                inde ratio conſtat, quam ob
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                rem à principio motus inæqualia pondera ſimul ferri
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                  <expan abbr="videãtur">videantur</expan>
                , inde verò magnis à ſe diſiungi interuallis. </s>
                <s id="N143B4">Ma­
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                lè ergo rationem huius inæqualitatis petunt à proporti­
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                one illorum ponderum, quæ á ratione creſcentis plagæ
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                deſumi debet; ablatá enim á grauitate ſeu impulſu parte
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                æquali ſuæ plagæ, reliquus impulſus dabit illam inæqua­
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                lem velocitatem. </s>
                <s id="N143C1">Obiicies fieri non poſsè ut eadem ratio
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                maneat plagæ in illo motu inæquali continuatæ, propte
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                rea quód aër percuſſus alium percutiat,
                  <expan abbr="viamq;">viamque</expan>
                eá rati­
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                one aperiat ruenti globo, plagæ imminenti ſe
                  <expan abbr="ſubducẽs">ſubducens</expan>
                ,
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                non aliter, quám cùm ultro cedentem trudimus:
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                in
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                relapſu globi maioris, quem ignis in ſublime tulit, pri­
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                uſquam terram feriat, ab aëris percuſsione hiatum in </s>
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          </chap>
        </body>
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