="dv">2</span>, gold$epsilon, <span class="dv">1</span>^<span class="dv">2</span>), 
        <span class="dt">wavelength =</span> gold$wavelength, <span class="dt">thickness =</span> <span class="kw">c</span>(<span class="dv">0</span>, thickness, <span class="dv">0</span>), <span class="dt">angle =</span> pi/<span class="dv">180</span> *<span class="st"> </span>
<span class="st">            </span><span class="kw">seq</span>(<span class="dv">15</span>, <span class="dv">60</span>, <span class="dt">length =</