Part 5/9:
Additionally, he tested with rods taped inside the tube, inside the coil assembly, but these placements made no significant difference. The experiment demonstrated that internal rods do contribute to changing the electrical behavior, but the specific placement, depth, and perhaps the rod length are essential factors. Paul hypothesizes that the system is being tuned akin to adjusting a musical instrument, aligning the setup to a specific resonant frequency or wave length.