The Meissner effect shown by levitating a magnet higher than a cuprate superconductor, which happens to be cooled by liquid nitrogen Underneath some ailments, for example incredibly minimal temperatures, some ceramics show high-temperature superconductivity (in superconductivity, "high temperature" usually means earlier mentioned 30 K). The reason for it's not comprehended, https://claytoneeedc.wikipresses.com/6780130/details_fiction_and_aln_thermal_conductivity