Optical discs

Optical discs

T515/0295 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 38.6MB

Downloadable file size: 3.9MB

Price image Pricing

Please login to use the price calculator


Caption: Optical discs. Compact discs (CDs) and digital versatile discs (DVDs) are examples of optical discs. An optical disc digitally stores music and other data as tiny depressions in a plastic disc. This disc is coated with a fine film of metal and then by another layer of plastic. The depressions form a spiral track moving from the centre of the disc to the outer edge. The data track is about 0.5 micrometres wide, and would stretch out for nearly 5 kilometres if unravelled. The information is read by a laser light that reflects from the metal layer, allowing the original data to be reconstructed.

Release details: Model release not required. Property release not required.

Keywords: audio sound, blank, cd, cd rom, communication, communications, compact disc, compact discs, data storage, digital versatile disc, discs, dvd, entertainment, filing, information, many, media, medium, multiple, music playback, optical disc, pile, piracy, playback, recordable, reflection, storage, technology

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.