and resonant frequency for this device was measured yielding 17 pf and 2500 mhz respectively calculated inductance for this device 1090 ph the third capacitor inductor device was assembled with a radius of 1 0 cm with five annuli separated by approximately 0 32 cm for this third device the copper tape was positioned to lay in the axial dimension at 1 0 cm radius the form to maintain the structure for the conducting elements consisted of two turns of a sheet of 0 127 mm thick paper the capacitance and resonant frequency for this device was measured yielding 3 7 pf and 350 mhz respectively calculated inductance for this device 55 8 nh a physically larger version of these capacitor inductor devices was also constructed the conducting elements of this last capacitor inductor were manufactured from 5 mil 0 127 mm aluminum foil with an interior radius of 13 65 cm and an exterior radius of 23 22 cm a section of each annulus was formed to accommodate the electrical connection required for a switch the insulator between the conducting elements consisted of 20 sheets of 5 mil 0 127 mm kraft paper for a total thickness of approximately 0 254 cm the insulator had an interior radius of 13 02 cm and an exterior radius of 23 5 cm a gap 6.