Single-pole magnet emerges in frozen concoction
Experiment simulates long-sought magnetic particle
By Andrew Grant
Somewhere lurking in the universe, most physicists agree, are minuscule magnets with just one pole — a north or a south, but not both. Scientists haven’t spotted any yet, but a new experiment offers an unprecedented glimpse at what these elusive magnetic particles should look like.
“It provides a window into the physics of the particle without having the particle itself in front of you,” says David Hall, the physicist at Amherst College in Massachusetts who led the research.