Fabri, Honoré, Tractatus physicus de motu locali, 1646
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              <s id="N10C4B">13. Cum duo globi in ſeſe inuicem impinguntur æquali motu,
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              minor retroagitur velociore motu, quàm ante moueretur, vt clarum
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              eſt: </s>
              <s id="N10C53">maior verò, ſi duplus eſt alterius, ſiſtit immobilis in puncto
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              contactus; </s>
              <s id="N10C59">ſi maior duplo ſuum iter proſequitur, ſed tardiore mo­
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              tu; ſi minor duplo, retroagitur: quæ omnia facilè ex dictis demon­
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              ſtrantur. </s>
              <s id="N10C61">Poteſt impetus eſſe æqualis alteri, & præualere; poteſt
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              æqualem impetum producere hoc inſtanti, & ſtatim inſtanti, quod
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              ſequitur, totus deſtrui. </s>
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              <s id="N10C6B">14. Poteſt globus retroagi in plano horizontali, licèt in aliud cor­
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              pus non incidat, ita vt initio tendat in ortum, verbi gratia: </s>
              <s id="N10C71">tùm
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              deinde, licèt nihil prorſus addatur, versùs occaſum; </s>
              <s id="N10C77">quod accidit,
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              cum globus vtroque motu, centri, ſcilicet, & orbis, mouetur, ſed
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              contrario; primùm enim motus centri præualet, ſed facilè cedit
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              propter attritum maiorem partium. </s>
              <s id="N10C81">Nullus datur propriè motus
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              refractus: </s>
              <s id="N10C87">licèt enim incuruetur linea motus, dum per aquam ſu­
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              bit mobile; hæc tamen eſt reflexionis ſpecies. </s>
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              <s id="N10C8F">15. Globus reflectens, qui ab ictu alterius mouetur, non mouetur
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              inſtanti contactus; </s>
              <s id="N10C95">quia impetus primo inſtanti, quo eſt, non mo­
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              uetur; </s>
              <s id="N10C9B">producitur enim impetus primo inſtanti contactus: </s>
              <s id="N10C9F">ſi impe­
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              tus eſſet tantùm determinatus ad vnam lineam, nulla fieri poſſet
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              reflexio, ſed tantùm repercuſſio; </s>
              <s id="N10CA7">quia veriſſima cauſa reflexionis
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              conſiſtit in noua determinatione: </s>
              <s id="N10CAD">per reflexionem poſſunt colligi
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              plures partes aëris ſonori ad Echometriam: </s>
              <s id="N10CB3">ſagitta emiſſa per ho­
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              rizontalem ſursùm, tantillùm aſcendit per arcum; quia tantillùm
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              reflectitur ab aëre. </s>
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              De motu circulari.
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              <s id="N10CCF">1. DAri motum circularem, probatur infinitis ferè experimen­
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              tis: </s>
              <s id="N10CD5">cuius ratio à priori eſt, quòd poſſint extremitates eiuſ­
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              dem cylindri in partes oppoſitas pelli; </s>
              <s id="N10CDB">vnde ſequitur neceſſariò
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              motus circularis; quem ij negare coguntur, qui ex punctis mathe­
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              maticis quantitatem componunt. </s>
              <s id="N10CE3">Motus circularis in ſublunaribus
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              oritur ex recto impedito; </s>
              <s id="N10CE9">quia, ſcilicet, determinatur tantùm im­
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              petus ad lineam rectam: </s>
              <s id="N10CEF">hinc quidam motus circularis eſt merè
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              per accidens, vt cùm retinetur extremitas funependuli, ſeu </s>
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