+**Superconductivity** is a quantum phenomenon where certain materials, when cooled below a critical temperature, exhibit exactly zero [Electrical Resistance](/wiki/electrical_resistance) and expel internal magnetic fields. This allows [Electric Current](/wiki/electric_current) to flow indefinitely without energy loss, promising revolutionary technologies from efficient power grids to [Magnetic Levitation](/wiki/magnetic_levitation).
+## See also
+- [Quantum Mechanics](/wiki/quantum_mechanics)
+- [Absolute Zero](/wiki/absolute_zero)
+- [Cryogenics](/wiki/cryogenics)
... 1 more lines