An optical disc is a flat, usually disc-shaped object that stores information in the form of physical variations on its surface that can be read with a beam of light. Optical discs can be reflective,
The optical lens of a compact disc drive
Optical discs are not vulnerable to water.
An earlier analog optical disc recorded in 1935 for Lichttonorgel [de] (sampling organ)
DVD is a digital optical disc data storage format. It was invented and developed in 1995 and first released on November 1, 1996, in Japan. The medium can store any kind of digital data and has been wi
Optical disc
…cards and hard drives can be simulated using a UDF live file system. For computer data backup and physical data transfer, optical discs such as CDs and DVDs are gradually being replaced with faster, smaller solid-state devices, especially the USB flash drive. This trend is expected to continue as USB flash…
The data side of a DVD manufactured by Sony DADC
Kees Schouhamer Immink received a personal technical Emmy award for his contributions to DVD and Blu-ray disc.
PlayStation 2, the first video game console to run DVDs