A disk's surface is divided into concentric tracks (circles within circles), and the thinner the tracks, the more storage. The data bits are recorded as magnetic spots on the tracks in one ...

"But we knew this wasn't right because astronomical observations reveal that the disks are actually fluffy -- more like an angel (food) cake. Our simulation helped us understand that magnetic ...

The team has manipulated quantum bits, so-called qubits, by harnessing the magnetic field of magnons—wave-like excitations in ...

Black holes have been fascinating subjects of study, not just because they are cosmic vacuum cleaners, but also as engines of ...

One of new bot’s features will be magnetic position encoders for the wheels. In the past, [Erich] has used the encoder disks that Pololu sells without issue. At 69¢ each, they don’t exactly ...

Cosmic forensic experts are reconstructing the magnetic field around an infant star from the planet-forming disk of gas and dust around it. How do you dust a star for fingerprints? It's certainly ...

Scientists have discovered more about the process that causes black holes to "leak" energy to their surroundings, finding the faster they spin, the more energy is extracted.

A hard drive stores data on a series of spinning magnetic disks called platters. This diagram shows an old PATA-style drive, but the actuator and platters are still conceptually the same.

Or maybe there’s a spot in the disk that is going bad, and the stronger magnetic field is required to reset the floppy’s field. Let us know your guess, or if you know the answer, fill us in!

However, previous studies, including those by Mitch Begelman, suggested that strong magnetic fields might stabilize these thin disks, but the details of their role in energy extraction and jet ...