Grab and keep your student's attention with spectacular high-voltage demonstrations using a hand-held tesla coil. The Visualizer turns an ordinary Tesla coil into a visual sensation. Mounted on the Tesla coil after removing the existing probe. Screw a clear incandesent light bulb into the specially made socket and plasma-like fingers of electricity radiate from the bulb. The Visualizer makes the Tesla coil's high-frequency electricity safe to touch. You can even light an ordinary fluorescent light bulb by allowing the hig-frequency electricity to pass across your body. For use with Telsa Coil.