optical disks - definizione. Che cos'è optical disks
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Cosa (chi) è optical disks - definizione

FLAT AND USUALLY CIRCULAR DISC WHICH ENCODES BINARY DATA, PRIMARILY USED FOR PHYSICAL DATA DISTRIBUTION AND LONG-TERM ARCHIVAL
Optical disk; Optical media; Optical discs; Optical storage media; Optical Disc; Optical Read Only Memory; Optical Sound Recording; Optical disc media; 💿; 🖸; Optical read only memory; Optical disks; History of the optical disc
  • Comparison of various optical storage media
  • Error rate measurement on a DVD+R. The error rate is still within a healthy range.

magneto-optical disk         
  • A Magneto-optical disc surface has sector partition rectangles.
  • [[Minidisc]]s are magneto-optical discs used to store music.
ROTATING STORAGE MEDIUM
Magnet optical disc; Magneto-optical; Magneto-optical disc; LIMDOW; Mo disk; Mo drive; Magneto-optic disk; M-O; Magneto-optical disk; Magneto optical storage; Magnetooptical storage; Magneto-optical storage; Magnetooptical data storage; Magneto optical data storage; Magneto-optical data storage; Magnetic optical storage; Magnetic-optical storage; Magnetic-optical data storage; Magnetic optical data storage; MO storage; MO data storage; MO disc; MO discs; MO disks; Magnetooptic storage; Magneto optic storage; Magneto-optic storage; MO drive; MO drives; Magneto optical; MO disk; MO Disc; MO Disk; LIMDOW technology; Magneto optical disk
<hardware, storage> (MO) A plastic or glass disk coated with a compound (often TbFeCo) with special optical, magnetic and thermal properties. The disk is read by bouncing a low-intensity laser off the disk. Originally the laser was infrared, but frequencies up to blue may be possible giving higher storage density. The polarisation of the reflected light depends on the polarity of the stored magnetic field. To write, a higher intensity laser heats the coating up to its Curie point, allowing its magnetisation to be altered in a way that is retained when it has cooled. Although optical, they appear as hard drives to the {operating system} and do not require a special filesystem (they can be formatted as FAT, HPFS, NTFS, etc.). The initial 5.25" MO drives, introduced at the end of the 1980s, were the size of a full-height 5.25" hard drive (like in IBM PC XT) and the disks looked like a CD-ROM enclosed in an old-style cartridge In 2006, a 3.5" drive has the size of 1.44 megabyte diskette drive with disks about the size of a regular 1.44MB floppy disc but twice the thickness. {Storage FAQ (http://cis.ohio-state.edu/hypertext/faq/usenet/arch-storage/part1/faq.html)}. (2006-07-25)
Optical instrument         
SCIENTIFIC INSTRUMENT USING LIGHT WAVES FOR IMAGE VIEWING
Optical instruments; Optical Instrument; Optical devices
An optical instrument (or "optic" for short) is a device that processes light waves (or photons), either to enhance an image for viewing or to analyze and determine their characteristic properties. Common examples include periscopes, microscopes, telescopes, and cameras.
Optical communication         
  • A naval signaler transmitting a message by flag semaphore (2002).
  • Chappe's]] [[semaphore tower]]s (18th century).
  • An [[air traffic controller]] holding a signal light gun that can be used to direct aircraft experiencing a radio failure (2007).
COMMUNICATION AT A DISTANCE USING LIGHT TO CARRY INFORMATION
Optical communications; Optical telecommunications; Optical telecommunication; Optical data communication
Optical communication, also known as optical telecommunication, is communication at a distance using light to carry information. It can be performed visually or by using electronic devices.

Wikipedia

Optical disc

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 the aid of a beam of light. Optical discs can be reflective, where the light source and detector are on the same side of the disc, or transmissive, where light shines through the disc to the be detected on the other side.

Optical discs can store analog information (e.g. Laserdisc), digital information (e.g. DVD), or store both on the same disc (e.g. CD Video).

Their main uses are the distribution of media and data, and long-term archival.

Esempi dal corpus di testo per optical disks
1. OPTICAL DISKS: Marcel Duchamp‘s 1'35 ‘Rotoreliefs‘ is part of a Societe Anonyme exhibition at Los Angeles‘s Hammer Museum.
2. "We know that there‘s a considerable amount of piracy still in China – whether that be software, whether it be optical disks –– and we want our intellectual property rights protected in China," he said.
3. Russia should crack down on factories that produce counterfeit optical disks, better define the restrictions on imports of encryption technology and close down the music download web site Allofmp3.com, Gutierrez told reporters on the sidelines of the American Chamber of Commerce‘s eighth annual conference.
4. The production costs of a multi–layer DVD using the new NME technology are estimated to be around ' cents, compared with the 6 cents for a standard single–layer play–back DVD, according to Dutch company ODMS, one of the world‘s leading makers of production lines for optical disks.
5. Speaking on the sidelines of an investment conference, he said the United States was "very supportive" of Russia‘s WTO bid and that "we want to help in any way we can." In return, Washington expects Russia to combat intellectual property rights violations by closing plants that produce counterfeit optical disks and shutting down a popular web site for music downloads, Allofmp3.com.