Electric gas discharge

Electric gas discharge occurs when an electric current passes through a gas, causing the gas particles to become energized and emit light or other forms of energy. This process happens when a voltage is applied across a gas, ionizing its atoms—meaning electrons are knocked loose. The free electrons collide with other atoms, exciting them. As the excited atoms return to their normal state, they release energy as visible light or electromagnetic radiation. This phenomenon is the basis for devices like neon lights, fluorescent lamps, and plasma displays, where controlled discharges produce specific colors and effects.