Plasma Sphere

The plasma sphere is made up of a glass flask that contains a mixture of inert gases under a reduced pressure. At the center of the flask is an electrode that releases electrical energy. When electrical energy passes through the gas mixture, atoms that make up the gases become highly ionized. We saw these ionized gases, called plasma, streaming from the central electrode towards the glass like short lightning bolts.
When we touch the surface of the sphere or even just hold your fingers very close to the surface, the streaks move towards your fingers. When you move your fingers over the surface, the streaks move and follow your fingers. Your fingers conduct electricity, “looking for an outlet to discharge.”