The Meissner influence demonstrated by levitating a magnet over a cuprate superconductor, that is cooled by liquid nitrogen Under some conditions, which include exceptionally very low temperatures, some ceramics exhibit high-temperature superconductivity (in superconductivity, "high temperature" means higher than thirty K). The main reason for this is not recognized, but https://elliottmlhcx.prublogger.com/38127892/the-2-minute-rule-for-what-is-ceramic