Pack iron oxide in a pill and look at its field at the...
User pauldevro, in the StrangeEarth subreddit,
Pack iron oxide in a pill and look at its field at the ends when placed in an external magnetic field. Now add this paper …
Oxygen torus and its coincidence with EMIC wave in the deep inner magnetosphere: Van Allen Probe B and Arase observations
Overview of attention for article published in Earth, Planets and Space, August 2020