Would anyone care to write me an explanation or point me to some trusted concise sources where I can learn about the physics of the capacitors in my guitar amps? I write/edit science tests for an educationalc publisher, and I'm working on a test about capacitance right now, how capacitors store potential energy and can hold a charge to be discharged later... I know that tone pots use caps with different capacitances that tune to different frequencies. These are tiny capacitors, but I also know there are giant caps in my amps. Are they doing totally different things? Or the same? What exactly are they doing with those electrons?! How is the current's frequency related to capacitance?!?!?