The luminous effects seen in plasma balls primarily result from the recombination of electrons with ions, which emits light. The process involves ionization of atoms, followed by accelerated electrons colliding with these atoms or ions, leading to excitation. When these excited atoms or ions relax, they release photons, contributing to the visible glow. Plasma balls, typically 6-inch glass spheres, demonstrate these electric glow discharge principles. Understanding this sequence clarifies the mechanisms behind the light produced in such devices.