Iron powder is sprinkled onto a plastic plate above bar magnet. The iron particles act as small magnetic dipoles and align along the magnetic field lines.
This is an experiment from the first-semester lecture "Electricity and Magnetism" given by Christian Bettstetter in the bachelor programs "Informationstechnik" and "Robotics and Artificial Intelligence" at the University of Klagenfurt, Austria.
Link to the lecture: bettstetter.com/teaching/em/
Video made by Udo Schilcher and Christoph Rauter.
Text by Christian Bettstetter.
No audio.
(c) 2024 Universität Klagenfurt