• Superconducting pipes and levitating magnets 

      Levin, Yan; Rizzato, Felipe Barbedo (2006) [Artigo de periódico]
      Motivated by a beautiful demonstration of the Faraday and the Lenz laws in which a small neodymium magnet falls slowly through a conducting nonferromagnetic tube, we consider the dynamics of a magnet falling coaxially ...