The ring magnets are used in high-speed centrifuges that refine uranium for use in nuclear weapons.

The old copper magnets accelerator was shut down on August 15, 1977 for superconducting magnets to be mounted 'pickaback' on the main ring magnets.

The C.I.A. says Pakistan has bought from China 5,000 ring magnets used to enrich uranium for weapons use.

Delivery was still held up because of concerns over China's sale to Pakistan of ring magnets used to enrich uranium for nuclear weapons.

One of the possible configurations is a ring magnet with the explosive charge in its center.

China has sold ring magnets to Pakistan, and Russian accelerometers were intercepted on their way to Iraq.

The Chinese have refused to be helpful on the ring magnets.

He works alongside Fatality as they investigate the Orrery that has turned Kyle Rayner into a ring magnet.

The output coil is formed as a stator, with axial magnetic flux from a rotating multi-pole ring magnet.

Some manufacturers use a single annular ring magnet, others use a series of single bar magnets in a circular array in their float design.