Plasma discharge refers to the process where an electric current passes through a gas, ionizing it and creating plasma. This occurs when sufficient energy is supplied to the gas, causing its atoms to lose electrons and form charged particles. Plasma discharge is commonly observed in devices like neon signs and fluorescent lamps, where the glowing effect is produced by the ionized gas. In industrial applications, plasma discharge is utilized for processes such as plasma cutting and plasma etching. These techniques leverage the high temperatures and reactive properties of plasma to cut materials or etch patterns onto surfaces. Plasma discharge plays a crucial role in various fields, including electronics and materials science.