The Meissner Influence demonstrated by levitating a magnet over a cuprate superconductor, that is cooled by liquid nitrogen Under some conditions, such as exceptionally very low 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 https://superparamagnetic-beads31841.alltdesign.com/getting-my-techniques-in-ceramics-to-work-57910211