Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 1: Opera mechanica

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            <s xml:id="echoid-s6592" xml:space="preserve">
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            particulæ ſimul impingerent; </s>
            <s xml:id="echoid-s6593" xml:space="preserve">unde triplâ exiſtente velocitate,
              <lb/>
            maſſâ etidem triplâ, potentia aut vis erit noncupla; </s>
            <s xml:id="echoid-s6594" xml:space="preserve">ex quo
              <lb/>
            patet maſſam augeri in eadem ratione, qua velocitas auge-
              <lb/>
            tur; </s>
            <s xml:id="echoid-s6595" xml:space="preserve">& </s>
            <s xml:id="echoid-s6596" xml:space="preserve">cum unaquæque pars etiam fortius impingat in ratio-
              <lb/>
            ne auctæ velocitatis, potentia aut vis venti in velum, eſt in
              <lb/>
            ratione duplicata celeritatum venti, id eſt, in ratione qua-
              <lb/>
            dratorum velocitatum venti in velum. </s>
            <s xml:id="echoid-s6597" xml:space="preserve">Agnoſcit hocce prin-
              <lb/>
            cipium Cl. </s>
            <s xml:id="echoid-s6598" xml:space="preserve">Hugenius; </s>
            <s xml:id="echoid-s6599" xml:space="preserve">reſtat ergo tantum, ut illud ap-
              <lb/>
            plicemus.</s>
            <s xml:id="echoid-s6600" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6601" xml:space="preserve">Prima applicatio oſtendet, quare vis venti in velum, cum
              <lb/>
            ventus velo perpendicularis eſt, ſeſe habeat ad vim ejuſdem
              <lb/>
            venti in velum, quando illud inclinatum vento opponitur,
              <lb/>
            ut quadratum radii ad quadratum ſinûs anguli incidentiæ;
              <lb/>
            </s>
            <s xml:id="echoid-s6602" xml:space="preserve">aut, quod idem eſt, cur vires ejuſdem venti in vela varia in-
              <lb/>
            clinatione ipſi obtenſa, ſint inter ſe in ratione quadratorum
              <lb/>
            ſinuum angulorum incidentiæ, quod demonſtravi Articulis
              <lb/>
            7. </s>
            <s xml:id="echoid-s6603" xml:space="preserve">8. </s>
            <s xml:id="echoid-s6604" xml:space="preserve">& </s>
            <s xml:id="echoid-s6605" xml:space="preserve">9. </s>
            <s xml:id="echoid-s6606" xml:space="preserve">Cap. </s>
            <s xml:id="echoid-s6607" xml:space="preserve">1.</s>
            <s xml:id="echoid-s6608" xml:space="preserve">, & </s>
            <s xml:id="echoid-s6609" xml:space="preserve">quod etiam hoc modo nunc demonſtro. </s>
            <s xml:id="echoid-s6610" xml:space="preserve">
              <lb/>
            Probatum dedi in Theoria Manuariæ Nauticæ, Artic. </s>
            <s xml:id="echoid-s6611" xml:space="preserve">6. </s>
            <s xml:id="echoid-s6612" xml:space="preserve">Cap. </s>
            <s xml:id="echoid-s6613" xml:space="preserve">
              <lb/>
            1. </s>
            <s xml:id="echoid-s6614" xml:space="preserve">corpus motum ab A in B non occurrere ſuperficiei C D
              <lb/>
            niſi ſecundum determinationem ſuam A V, ponendo ſcilicet
              <lb/>
            A V perpendicularem ipſi D C productæ, & </s>
            <s xml:id="echoid-s6615" xml:space="preserve">in illam ſuper-
              <lb/>
            ficiem nullam vim exſerere niſi ſecundum hanc determinatio-
              <lb/>
            nem; </s>
            <s xml:id="echoid-s6616" xml:space="preserve">quod agnoſcit D
              <emph style="super">nus</emph>
            Hugenius. </s>
            <s xml:id="echoid-s6617" xml:space="preserve">Hoc poſito, ventus A B
              <lb/>
            in velum non agit, niſi ſecundum hanc determinationem, id
              <lb/>
            eſt, cum velocitate A V. </s>
            <s xml:id="echoid-s6618" xml:space="preserve">Si velum C D vento A B per-
              <lb/>
            pendiculare eſſet, ventus in velum ageret velocitate A B; </s>
            <s xml:id="echoid-s6619" xml:space="preserve">
              <lb/>
            & </s>
            <s xml:id="echoid-s6620" xml:space="preserve">per conſequens ex principio quod ſtatim adſtruxi, vis
              <lb/>
            cum qua ventus in velum ageret, ſi vento eſſet perpendicula-
              <lb/>
            re, eſt ad vim venti in velum D, quod inclinatè vento ob-
              <lb/>
            tenditur, ut quadratum A B ad quadratum A V, id eſt,
              <lb/>
            ut quadratum radii ad quadratum ſinûs anguli incidentiæ.</s>
            <s xml:id="echoid-s6621" xml:space="preserve"/>
          </p>
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            <s xml:id="echoid-s6622" xml:space="preserve">Secunda applicatio inſervit ſolvendæ quæſtioni, de qua
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            lis eſt inter D
              <emph style="super">num</emph>
            Hugenium & </s>
            <s xml:id="echoid-s6623" xml:space="preserve">me, id eſt oſtendit, quod,
              <lb/>
            velo conſtituto in ſitu C D, & </s>
            <s xml:id="echoid-s6624" xml:space="preserve">navi in ſitu B K, vis, qua
              <lb/>
            ventus ope veli, navim ſecundum B G propellit, ſit ad vim,
              <lb/>
            qua idem ventus, ope ejuſdem veli navim propellit </s>
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