High voltage discharge experiment to create Lichtenberg figure

This video shows how a high voltage discharge creates a Lichtenberg figure. The interior of an 18 square x 1 piece of Plexiglas was charged to 2.2 million volts (MV) using a 5 MV particle accelerator. A layer of excess electrons become trapped deep inside. When discharged, the excess charge escaped with a bright flash and a loud bang. The hot, lightning-like discharge created thousands of...