original_query: What is magnetic levitation and how does it work?
query: What is magnetic levitation and how does it work?
answer: Magnetic levitation (maglev) is a method of suspending an object using magnetic fields to counteract gravity and other forces.  It involves two main challenges: generating sufficient upward force (lift) and ensuring stability to prevent the object from tipping or sliding. Various methods achieve this, including using permanent magnets, electromagnets, diamagnetic materials, superconductors, and servomechanisms to control and stabilize the magnetic fields.