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Problem 12: Strange Motion

Sprinkle small floating particles on the surface of water in a bowl. Bring a strong magnet above and near to the water surface. Explain any observed motion of the particles.”

 I. Phenomenon Demonstration

II. Books, Encyclopedia, Discussion and Forum Posts

III. Research Papers

  • Cenev, Zoran, Alois Würger, and Quan Zhou. “Motion and Trapping of Micro- and Millimeter-Sized Particles on the Air–Paramagnetic-Liquid Interface.” Physical Review E 103, no. 1 (2021). https://doi.org/10.1103/physreve.103.l010601.
  • J. M. D. Coey, R. Aogaki, F. Byrne, and P. Stamenov, Proceedings of the National Academy of Sciences 106, 8811 (2009).
  • J. Vialetto, M. Hayakawa, N. Kavokine, M. Takinoue, S. N. Varanakkottu, S. Rudiuk, M. Anyfantakis, M. Morel, and D. Baigl, Angewandte Chemie International Edition 56, 16565 (2017).
  • L. E. Helseth, T. H. Johansen, and T. M. Fischer, Applied Physics Letters 93, 042516 (2008).