[AnotherMaker] discovered something that might breathe a little more life into those dead disks — magnets ... a spot in the disk that is going bad, and the stronger magnetic field is required ...

One thing we’d suggest is switching from a disc to a cylinder with magnets placed in a Halbach array to direct as much of the magnetic field into the interior as possible, with coils of copper ...

ALMA was able to measure the polarization of dust grains in the protoplanetary disk ... to a magnet, the dust grains in this planet-forming cloud are aligned with magnetic field lines running ...

Thus, understanding the magnetic fields ... around a magnet. The team thinks that the measured three-dimensional structure might create strong turbulence within the protoplanetary disk.

Magnetic devices are components for creating, manipulating or detecting magnetic fields. This can include magnetic memories, magnetometers and devices for magneto-optics. Magnetism can also play a ...

They are also vulnerable to magnetic fields - a strong magnet might erase the data the device holds. Optical devices use a laser to scan the surface of a spinning disc made from metal and plastic.