Plasma Balls are powered by high voltage sources that supply energetic fast moving electrons. When these electrons collide with the gaseous inert atoms in the ball, the atoms are ionized (loose electrons) and a plasma is formed. As the gas particles return to their ground state, they emit light - the eerie lightning like display in the ball. 

This is a small hand-held, battery operated plasma ball at an excellent price! 
Requires 4 x AA batteries or 6 V DC power supply (not included)
Size: 8 cm ball, 14 cm high

Teach: plasma, gas discharge
Age: 10+ (fragile glass ball)