| 1 | A strong magnet was critical to trapping antihydrogen atoms by using their small magnetic moments. | |
| 2 | You' ve just made two smaller magnets each with their own North and South poles. | |
| 3 | Just as iron filings arc from one end of a magnet to another, the plasma is sliding in an arc along magnetic field lines. | |
| 4 | What if you tried to be clever and make a monopole by cutting the magnet above in half? Too bad. | |
| 5 | Liquid helium cools infrared detectors, nuclear reactors, and the superconducting magnets used in MRI machines, too. |
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