Large-scale cousin of elusive 'magnetic monopoles' found at NIST

Any child can tell you that a magnet has a 'north' and a 'south' pole, and that if you break it into two pieces, you invariably get two smaller magnets with two poles of their own. But scientists have spent the better part of the last eight decades trying to find, in essence, a magnet with only one pole. A team working at the National Institute of Standards and Technology (NIST) has found one...

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