Levitation and motion of a magnet partially immersed into a magnetic fluid Daria Pelevina, Mikhail Kobzev, Sergey Kalmykov, Dmitrii Merkulov and Vera Naletova EPJ Web Conf., 185 (2018) 09008 Published online: 04 July 2018 DOI: 10.1051/epjconf/201818509008