The guys from the team Arcattack , you can say, are engaged in the popularization of science. They do this through various shows where physical phenomena are involved. Basically, it is high voltage, discharges and lightning.
For example, a team plays a guitar on the stage, where miniature lightning strikes the guitarist (although such lightning can kill any person, do not have that protection). ')
The other day, one of the representatives of the team, Stephen Ward, demonstrated the Tesla gun.
To supply the gun energy used batteries with a capacity of 5Ach, which are placed in a special backpack behind his back. At the output, the voltage is 400 volts. The whole design is similar to a game weapon, except that it all works in reality.
Here is a video with a demonstration of the "shooting" process.
The new Tesla gun is an improved version of this model, the authorship of the same team: