Optical disks rely totally on the ability of the pickup to follow and focus on the data track. It is taken for granted that these mechanisms are phenomenally accurate, work at high speed despite being made at low cost and…

The optical disk has some useful characteristics that have allowed it to survive alongside magnetic media. John Watkinson takes a look.

Immersive audio transforms the listening environment to deliver a mesmerizing and captivating experience for a wide range of audiences and expansive group of genres.

The hard disk drive rapidly converged on the concept of one head per surface with all of the heads moving together on a common positioner.

We call them hard disks to distinguish them from floppy disks. As the latter have practically died out as a result of progress in solid-state storage such as flash memory, it is probably not necessary to specify that disks are…