ectivity-1.png" width="960"></p>
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<div id="variation-of-the-parameters-and-effect-on-the-resonance" class="section level4">
<h4 class="hasAnchor">
<html><body><a href="#variation-of-the-parameters-and-effect-on-the-resonance" class="anchor"> </a></body></html>Variation of the parameters, and effect on the resonance</h4>
<p>We now look at the effect of changing the thickness of the metal layer, from non-existent (single air/glass interface), to an opaque metal film. First, we wrap the calculation in a 