The Meissner effect shown by levitating a magnet earlier mentioned a cuprate superconductor, and that is cooled by liquid nitrogen Beneath some problems, including very low temperatures, some ceramics show high-temperature superconductivity (in superconductivity, "high temperature" signifies over thirty K). The rationale for this isn't recognized, but There are 2 https://tysonwurnj.law-wiki.com/2034081/top_laboratory_use_si3n4_crucible_company_secrets