Specification:Name: Solar Magnetic Levitation ModelMaterial: Acrylic, Magnets, Solar Panels, Copper Enameled WiresFeature: Automatic rotation under lightType: Horizontal Levitating Stand, Four-sided Solar PanelPrinciple: Photoelectric Effect, Electro-Magnetic InductionSpeed: 300-1500 r/miniOverall Size: 155*56*57mm Features:- Laser-cutting acrylic material, no burrs, beautiful cruved lines.- Transparent visual structure, explain the principle and mechanism easily.- Unique magnetic levitation structure, almost frictionless.- Creative gifts, technological gifts, principle teaching models, fashion desktop decorations.- Only need light irradiation, it will automatic rotation, no power supply. The best light source is the strong sunlight, place this model outdoor in a noon sunny day. Besides, big light rate lamplight also suitable, like bath bully lamp. Instructions:1. Bring the model near the window or near a suitable light resource. Don’t put the model on steel desk, which will affect the performance.2. Set the rotor to the board, levitating success on the model.3. In most cases, you need to give the rotor a gently push, then it will run smoothly by light. 4. The magnet is fragile, please avoid the magnetic suction to each other and damage. And please avoid overexertion. Package Included:1 x Solar Magnetic Levitation Model (Four-sided)