induction levitation

Induction levitation uses electromagnetic fields to suspend an object in mid-air without physical contact. A coil of wire generates a changing magnetic field when an electric current passes through it. This magnetic field induces electric currents, called eddy currents, in a nearby conductive object—often a special metal. These eddy currents create their own magnetic field that opposes the original, causing a repulsive force. If precisely controlled, this force balances gravity, allowing the object to levitate steadily. This technology is utilized in applications like magnetic levitation trains, which glide smoothly above tracks at high speeds, reducing friction and noise.