Electricity and magnetism are inseparable twins among natural forces. In 1820, Oersted's experiments revealed for the first time a truth that reaches the very core of the physical world: a flowing electric current produces a circular magnetic field around it. Its direction is determined by the right-hand rule, and its strength is directly proportional to the magnitude of the current. This discovery laid the cornerstone of electromagnetism and is the root of electric motors, generators, and all modern electrical technologies. Understanding "electricity generating magnetism" means understanding how the most fundamental driving force of our electrified civilization emerges from the invisible movement of electric charges. Our "Electricity Generating Magnetism" exhibit, on an open experimental platform 2.8 meters wide and 2 meters high, transforms this historic discovery into an exploration that everyone can replicate. You can smoothly adjust the current flowing through the central wire by
