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 ...

Magnetic poles are seemingly inseparable: Slice a magnet in half, and you get two smaller magnets, each with its own north and south poles. But exotic magnetic particles that flout this rule may be ...

Using a diamond needle tipped with a single electron, physicists have found seemingly impossible one-sided magnets swirling along the surface of hematite. The rules of physics (the ones we know of, ...

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A special type of brushless motor is called a limited-angle torquer (LAT). LATs are constrained to produce torque through a rotation angle of less than 180°. But they are widely used to operate ...