Touch the glass and be mesmerized by the pink and blue lightning bolts that flow from your fingers. The plasma light is a mysterious mesmerizing scientific desktop display. The glass contains a mixture of gasses that turn into a plasma when exposed to electromagnetic energy emanating from the coils inside the base. The glass bulb rests on a base that produces the electro waves that react with the gases in the bulb. The base also features a lever switch that turns the plasma ball on/off. Also now has Music Activated Mode: Built in music sensor the bolts will respond and dance in phase with music