Superconductivity is a phenomenon in which certain materials exhibit zero electrical resistance and the expulsion of magnetic fields when cooled to a critical temperature. This unique property allows superconductors to conduct electricity with no energy loss, making them highly efficient for a variety of applications such as MRI machines, particle accelerators, and power grids. Superconductivity research aims to understand the underlying mechanisms of this phenomenon, discover new superconducting materials with higher critical temperatures, and develop practical applications for these materials in various industries.