Update index.html

op-amps added

Author: epsaul

index.html

@@ -30,7 +30,9 @@ <h2>Explore Further</h2>
     <li><a href="capacitors.html">Capacitors</a> — holding charge, shaping time.</li>
     <li><a href="inductors.html">Inductors</a> — coiled memory, resisting change.</li>
     <li><a href="transistors.html">Transistors</a> — switches that think, amplifiers that whisper.</li>
-    <li><a href="diodes.html">Diodes</a> — one-way gates, shaping flow and fate.</li>  
+    <li><a href="diodes.html">Diodes</a> — one-way gates, shaping flow and fate.</li>
+    <li><a href="op-amps.html">Op-Amps</a> — difference engines, sculpting signal and silence.</li>
+
   </ul>
 </li>
       </ul>