ФІО = Василь Запитання:Анотація до тексту. Англ. What is supercondactivity? The article provides the reader with an introduction on the superconductivity. A review of this phenomena and mechanisms of zero resistance are presented. The article also describes high temperature superconductors near 90K. Superconductor below its critical temperature is discussed. The author gives consideration of phonon as particle too. ====================================