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 instance really very low temperatures, some ceramics exhibit high-temperature superconductivity (in superconductivity, "high temperature" implies over thirty K). The rationale for this isn't understood, but https://magnetic-beads-rna-isolat04792.wikimidpoint.com/6511128/ceramicos_propiedades_for_dummies