Marci of Kronland, Johannes Marcus
,
De proportione motus figurarum recti linearum et circuli quadratura ex motu
,
1648
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<
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mediãte
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illo glutine ex calce & arenâ multò levioribus;
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nõ
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poſſe
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eo modo habere, quo partes continui:
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neq́
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; per modum unius
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cenſeri in ordine ad impulſum; quem etiam in eodem ſubie
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cto, ob partium diſcrimina, oſtendi inæqualem. </
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<
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>Etenim vi
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demus, longè differre hunc
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nexũ
">nexum</
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à partium eiuſdem ſaxi unio
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ne, diſſoluto à murarijs cæmento: parte enim averſâ etiam le
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viter percuſsâ, illæſo ſaxo, decidunt coagmenta. </
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Neq;
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obſtat
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in muro omnia vincta teneri, quò minùs impetus ſimili ratione
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<
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abbr
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atq;
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in ſolutis pertranſeat. </
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>Nam ſi pila in plano ſeu manu, ſeu
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aliâ ratione firmetur, quò minùs moveri poſſit à plagâ; nihilo
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minùs ſibi contiguam movet. </
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<
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>Neceſſe ergo matori pericu
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lo ſequi ſaxa minora, quàm æqualia aut maiora: cùm per æqua
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lia impetus ad extimum
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abbr
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uſq́
">uſque</
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; æqualiter ſe effundat: illisq illæ
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ſis & immotis pertranſeat. </
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<
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>Vnde ſiquid periculi non niſi inter
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no parieti creatur, qui facilè refici poteſt. </
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<
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>Non ita cùm imme
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diatè minora ſequuntur: receſſu enim à primis extima pericli
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tantur:
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neq;
">neque</
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facilè reparari queunt: unde viſo periculo magis ab
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hoſte infeſtantur. </
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<
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>Vt verò quid mihi videatur, dicam: eiuſ
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modi ſaxa, quæ calce glutinantur, aut ſunt partes continuæ e
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iuſdem molis, aut contiguæ. </
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<
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>Supponamus primùm eſſe conti
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guas & plagam incipere à maiori. </
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<
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>Cùm
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itaq;
">itaque</
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maius percutiat
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minus, ſi non aliunde motus impediatur, movebitur minus ab
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incipiente & necdum perfectâ plagâ: ad cuius motum ſequitur
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maius per poriſma 2. </
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<
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>Quòd ſi verò ab aliâ vi detineatur ne
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ceſse totum impulſum maioris recipere. </
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<
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>Et ſi quidem illa vis
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retentiva ſit minor impulſu; tum ſanè movebitur illud mobile:
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reliqua verò, quia illorum plaga perfecta, à motu conquieſcent. </
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<
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>Vnde tota illa vis diſtractiua partem ultimam obtinet. </
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<
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>Si
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autem à minoribus eadem plaga procedat: quia tum hypo
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mochlium ſecundi eſt tertium; neceſse non niſi ultimo moto
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moveri primum: ac proinde impulſum maioris recipere </
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