Plasma Ball – Understanding Plasma and Electric Fields (Exhibition)

Chandni Usha | Nanoscale Devices Lab

"A plasma ball consists of a glass sphere filled with inert gases at low pressure. When a high-frequency alternating voltage is applied to an electrode at the centre, the gases ionize, forming glowing plasma filaments that extend toward the glass. When a person touches the surface, their body acts as a conductor, influencing the electric field and attracting the plasma filaments."