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 higher than thirty K). The explanation for this is not recognized, but there https://silicacoatedmagneticbeads26936.blognody.com/45918219/top-what-is-ceramic-made-of-secrets