Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica

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            <s xml:id="echoid-s7621" xml:space="preserve">
              <pb o="616" file="0352" n="369" rhead="EUSTACHIUS DE DIVINIS"/>
            vexum ire debuiſſet; </s>
            <s xml:id="echoid-s7622" xml:space="preserve">5
              <emph style="super">a</emph>
            , & </s>
            <s xml:id="echoid-s7623" xml:space="preserve">6
              <emph style="super">a</emph>
            . </s>
            <s xml:id="echoid-s7624" xml:space="preserve">lucidis non totis extantibus,
              <lb/>
            & </s>
            <s xml:id="echoid-s7625" xml:space="preserve">majori ex parte tectis ab obſcuris, tunc enim reſtat
              <lb/>
            quaſi falcula, differt autem 5
              <emph style="super">a</emph>
            à 6
              <emph style="super">a</emph>
            ſecundùm plùs, & </s>
            <s xml:id="echoid-s7626" xml:space="preserve">mi-
              <lb/>
            nùs 7
              <emph style="super">a</emph>
            , ut dixi, fictitia eſt; </s>
            <s xml:id="echoid-s7627" xml:space="preserve">cùm Saturnus ſphærois non
              <lb/>
            ſit, niſi fortè eo modo, quem ſupra num. </s>
            <s xml:id="echoid-s7628" xml:space="preserve">4. </s>
            <s xml:id="echoid-s7629" xml:space="preserve">expoſui; </s>
            <s xml:id="echoid-s7630" xml:space="preserve">8
              <emph style="super">a</emph>
              <lb/>
            lucidis inter maximam digreſſionem, & </s>
            <s xml:id="echoid-s7631" xml:space="preserve">Saturni globum
              <lb/>
            exiſtentibus, tectiſque ex parte, à minore portione ob-
              <lb/>
            ſcurorum; </s>
            <s xml:id="echoid-s7632" xml:space="preserve">tunc enim falces majores ſunt; </s>
            <s xml:id="echoid-s7633" xml:space="preserve">latiores qui-
              <lb/>
            dem, quò propiùs ad maximam digreſſionem accedunt;
              <lb/>
            </s>
            <s xml:id="echoid-s7634" xml:space="preserve">anguſtiores verò, quo Saturnio globo propiores ſiunt; </s>
            <s xml:id="echoid-s7635" xml:space="preserve">9
              <emph style="super">a</emph>
              <lb/>
            & </s>
            <s xml:id="echoid-s7636" xml:space="preserve">10
              <emph style="super">a</emph>
            ab octava tantummodo differunt, ſecundùm plus,
              <lb/>
            & </s>
            <s xml:id="echoid-s7637" xml:space="preserve">minùs; </s>
            <s xml:id="echoid-s7638" xml:space="preserve">ſunt enim multæ combinationes; </s>
            <s xml:id="echoid-s7639" xml:space="preserve">quas habes in
              <lb/>
            duobus circulis ſeſe invicem ſecantibus; </s>
            <s xml:id="echoid-s7640" xml:space="preserve">tres ultimas ficti-
              <lb/>
            tias reputo; </s>
            <s xml:id="echoid-s7641" xml:space="preserve">niſi fortè 12
              <emph style="super">a</emph>
            ad 10, reducatur itemque 13
              <emph style="super">a</emph>
            de
              <lb/>
            qua infra.</s>
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            <s xml:id="echoid-s7643" xml:space="preserve">XI. </s>
            <s xml:id="echoid-s7644" xml:space="preserve">Anſa una non longiùs extenditur, quàm alia; </s>
            <s xml:id="echoid-s7645" xml:space="preserve">hinc
              <lb/>
            æqualis eſt utriuſque lucidi digreſſio; </s>
            <s xml:id="echoid-s7646" xml:space="preserve">quia uterque com-
              <lb/>
            muni apogæo & </s>
            <s xml:id="echoid-s7647" xml:space="preserve">perigæo gaudet, & </s>
            <s xml:id="echoid-s7648" xml:space="preserve">æquali motu move-
              <lb/>
            tur; </s>
            <s xml:id="echoid-s7649" xml:space="preserve">item obſcuri eodem apogæo & </s>
            <s xml:id="echoid-s7650" xml:space="preserve">perigæo gaudent; </s>
            <s xml:id="echoid-s7651" xml:space="preserve">ex
              <lb/>
            his, perfecta anſarum & </s>
            <s xml:id="echoid-s7652" xml:space="preserve">brachiorum æqualitas neceſſariò
              <lb/>
            ſequitur.</s>
            <s xml:id="echoid-s7653" xml:space="preserve"/>
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            <s xml:id="echoid-s7654" xml:space="preserve">XII. </s>
            <s xml:id="echoid-s7655" xml:space="preserve">Anſulæ videntur, quando portio lucidorum ab ob-
              <lb/>
            ſcuris tegitur; </s>
            <s xml:id="echoid-s7656" xml:space="preserve">nempe ſunt quædam quaſi aperturæ ni-
              <lb/>
            græ, quas lucida corona cingit; </s>
            <s xml:id="echoid-s7657" xml:space="preserve">hæ ſunt anſulæ; </s>
            <s xml:id="echoid-s7658" xml:space="preserve">brachia
              <lb/>
            verò, quando lucidi tangunt globum Saturni, obſcuris in
              <lb/>
            conjunctione exiſtentibus.</s>
            <s xml:id="echoid-s7659" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s7660" xml:space="preserve">XIII. </s>
            <s xml:id="echoid-s7661" xml:space="preserve">Anſulæ eò longiùs porriguntur quo propiùs lu-
              <lb/>
            cidi ad maximam digreſſionem accedunt; </s>
            <s xml:id="echoid-s7662" xml:space="preserve">obſcuris ſcilicet
              <lb/>
            lucidorum partem tegentibus.</s>
            <s xml:id="echoid-s7663" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s7664" xml:space="preserve">XIV. </s>
            <s xml:id="echoid-s7665" xml:space="preserve">Anſulæ eò patentiores ſunt, quò major obſcuro-
              <lb/>
            rum portio extra Saturnum extat, lucidis in maxima di-
              <lb/>
            greſſione conſtitutis; </s>
            <s xml:id="echoid-s7666" xml:space="preserve">anguſtiores verò, cum minor obſcu-
              <lb/>
            rorum portio extat.</s>
            <s xml:id="echoid-s7667" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s7668" xml:space="preserve">XV. </s>
            <s xml:id="echoid-s7669" xml:space="preserve">Anſulæ latiores ſunt, quando minor obſcurorum
              <lb/>
            portio tegit lucidos, in maxima digreſſione poſitos.</s>
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