Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

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            <p type="main">
              <s id="s.001338">
                <pb pagenum="260" xlink:href="010/01/268.jpg"/>
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                <lb/>
              modo diſpoſiti: animaduerti poſtea, quòd in ma­
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              gnete, & in omnibus magneticis corporibus dantur
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              duo poli, borealis nempè, & auſtralis, & quotieſ­
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              cumque duo corpora magnetica ſuper aquam inna­
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              tantia ad ſeſe propiùs accedunt, tunc quidem polo
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              vnius auſtrali vnitur, connectitur que alterius corpo­
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              ris borealis polus, & ſi contingat vt alitèr diſponan­
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              tur à violentia aliqua externa, fponte ſua recedunt,
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              & indebita conſtitutione ſituantur, tum reſpectu ſui,
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              cum reſpectu poli auſtralis Orbis Terræ. </s>
              <s id="s.001339">cogitaiam̨
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              conos excauatos ABC, FGH eſſe magneticos, vel
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              ferreos virtute tamen magnetica affectos, vt nimirùm
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              omnes vertices A, & F ſint poli boreales, partes ve­
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              rò auſtrales ſint baſes BC, & GH, & quia baſes præ­
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              dictæ ſunt cauæ poli auſtrales præcisè exiſtent in cen­
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              tris circulorum BC, & GH. his poſitis innatent iam
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              prędicti conuli, ſcilicèt moueri lateralitèr poſſint abſ­
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              que vllo impedimento, tunc quidem polus borealis
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              F coni FGH, ſi coniungi debet iuxtà magneticas le­
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              ges cum polo auſtrali conuli ABC neceſſariò vertex
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              F cum centro circuli baſis BC coniungetur naturali
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              inſtinctu, & ideò reſiſtet externæ violentiæ, quæ
                <expan abbr="hãc">hanc</expan>
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              ſituationem perturbare conaretur. </s>
              <s id="s.001340">A dueniat iam alia
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              vis externa, quæ violentèr inſinuet verticem F intra
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              ſinuoſam cauitatem alterius versùs A, tunc quidem̨
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              naturali niſu, ceſſante
                <expan abbr="violẽtia">violentia</expan>
              externa, recedet ver­
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              tex coni FGH ab interna illa poſitione, & denuò re­
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              trocedet
                <expan abbr="quouſq;">quouſque</expan>
              eius vertex F coniungatur centro
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              circuli baſis BC. </s>
              <s id="s.001341">Et hæc inquam eſſet vis elaſtica, quæ </s>
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          </chap>
        </body>
      </text>
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