A magnet gently wobbles as it hovers, frictionless, above a disk cooled below its superconducting critical temperature, held aloft purely by magnetic forces. This demonstrates the Meissner effect: below a critical temperature, a superconductor expels magnetic field lines from its interior, generating opposing surface currents that push the magnet away, while flux pinning at microscopic defects locks the magnet's height and lateral position in place, producing the characteristic quantum-locked stability rather than a wobbly, unstable float. The curved field lines looping between magnet and disk visualize how the magnetic flux is bent and excluded around the superconducting surface instead of passing straight through it. Watch how lowering the temperature slider deepens the levitation gap, while warming the disk toward its critical temperature lets the field lines relax and the magnet sink back down as superconductivity breaks down.