The Meissner Influence demonstrated by levitating a magnet over a cuprate superconductor, that is cooled by liquid nitrogen Under some conditions, such as extremely small temperatures, some ceramics exhibit high-temperature superconductivity (in superconductivity, "high temperature" indicates above thirty K). The explanation for this is not recognized, but There are 2 https://rna-beads12340.imblogs.net/88807150/not-known-details-about-aln-ceramic-plate