The Meissner outcome shown 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" indicates higher than thirty K). The explanation for this is simply not recognized, but https://josuenmawq.mybjjblog.com/details-fiction-and-aln-thermal-conductivity-51339972