Specification:Name: Solar Magnetic Levitation ModelMaterial: Acrylic, Magnets, Solar Panels, Copper Enameled WiresFeature: Automatic rotation under lightType: Horizontal Levitating Stand, Four-sided Solar Panel, Almost Unspported Levitation, Aluminum Solid BasePrinciple: Photoelectric Effect, Electro-Magnetic InductionSpeed: 300-1500 r/miniOverall Size: 190*110*73mm
 Features:- Almost unsupported stand, soild aluminum base, make it perfect and cool as gift or desktop decorations.- 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. What is the principle of magnetic levitation?Both ends fixed with two retainer magnets, at a appropriate position. As long as analyze on the magnetic field generated by the retainer  magnets, can know that levitating magnets in the vertical direction, in fact, is in the midst of a magnetic field which is like a bowl. The levitating magnet will slide to the center of the bowl, also is the middle of the retainer magnets on both ends, supported by an upward force.But it is impossible to stay stable all the time if only be lifted up. Even a little bit interference, it will lose balance. Therefore, we slightly move the levitating magnet a bit outward from the middel of retainers. According to the force analysis, the magnet is going to receive another force, and that force is going to be pointing in the direction of motion and so the tip is going to be staying on the support. External disturbances can be offset by a bit of clever friction at that point of support. If adjusted just right, the friction will be very, very small. Package Included:1 x Solar Magnetic Levitation Model (Almost Unsupported Stand)