

Alright guys, real talk moment… Superconductors are materials that, when cooled to very low temperatures, exhibit zero electrical resistance and expel magnetic fields, known as the Meissner effect. This means that an electric current can flow through a superconductor indefinitely without any energy loss, as long as the material is kept below its critical temperature (Tc). The phenomenon was first discovered in 1911 by Dutch physicist Heike Kamerlingh Onnes, who observed that mercury became superconductive at 4.2 K (-269°C). Since then, various materials have been found to exhibit superconductivity, each with its own critical temperature. The unique properties of superconductors have led to applications in various fields, including medical imaging (MRI machines), particle accelerators, and maglev trains. These applications take advantage of the material’s ability to conduct electricity without resistance and create strong magnetic fields.