The most common types are CD, DVD and Blu-ray. As removable media, optical discs superseded the earlier magnetic disk cartridges because they weigh less, have higher capacities and are not subject ...

The Japanese manufacturer Sony has decided to wind down production of four types of recordable Blu-ray discs, with storage capacities ranging from 25 to 128 GB, according to the Japanese website ...

CD, DVD and Blu-ray discs are optical examples. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.