I have the circuit with a drawing below, to create sonoluminescence. One of the steps needed was an inductor coil in order to achieve electrical resonance within the circuit. The link provided here: http://www.macgeisler.de/nld/sbsl-howto.html told me to find the inductance needed through the equation L=1/C(6.28(f)2) Where L is inductance, C is the capacitance of my transducers, he said to look at them as a parallel plate capacitor, but I just found the static capacitance on the website I bought it from which on the website said the static capacitance was 3650pF, and the resonant frequency which was 42kHz. When I made the inductor coil for this, using an iron nail covered in electrical tape and coated copper wire, I am getting all the same results on my voltage and frequency from the oscilloscope hooked up. This is AC electricity by the way. So why is my inductor coil not working or having any effect on my circuit? A physics professor from a college I visited said it was because my frequency generator was already pumping out the tuned electricity, but shouldn't the inductor atleast raise the voltage or something? The inductance says 28mH on my picture but I made a new one that is around 80mH now. But even if the inductance is off shouldn't it still have an effect on the voltage? Thanks for the help!