[Educational & Decorative Tool]: This Toroid Circuit Plasma Ring Drive Plasma Ball fits glass spheres with outer diameters of 13cm. Perfect for physics classrooms, science labs, and exhibitions, this lamp doubles as a unique desktop ornament [Interactive Music-Reactive]: The plasma arcs respond dynamically to sound, pulsing and dancing in sync with music. This feature adds an engaging, rhythmic element that enhances both entertainment and educational value [Working Principle]: Inside a spherical glass sealed with low-pressure xenon gas, the xenon gas is ionized to form a plasma under the action of a strong electric field. These electrically conductive xenon plasmas form a stable ring structure under the influence of an applied toroidal electric field [Stunning Visuals]: Charged particles collide to produce a controlled glow discharge, forming a steady plasma ring. The visually stunning effect makes it ideal for physics demonstrations, sparking curiosity about electricity and plasma physics [Important Safety Reminders]: This plasma globe adopts high-voltage driving design. Touching the outer glass surface is safe, but please never touch exposed coils to avoid unnecessary risks. Recommended to use under proper supervision