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# Topic: Disk (mathematics)

###### In the News (Sat 25 May 13)

 Encyclopedia: Disk (mathematics) In geometry, a disk is the region in a plane contained inside of a circle. In geometry, a disk is an n-dimensional region bounded by an (n-1) dimensional hypersphere. In mathematics, a disk is a geometrical object. www.nationmaster.com /encyclopedia/Disk-(mathematics)   (414 words)

 Info and facts on 'Disk'   (Site not responding. Last check: 2007-11-06) A disk or disc is anything that resembles a flattened cylinder (A surface generated by rotating a parallel line around a fixed line) in shape. In mathematics (A science (or group of related sciences) dealing with the logic of quantity and shape and arrangement), a disk is a geometrical (additional info and facts about geometrical) object. The Frisbee (A light plastic disk about 10 inches in diameter; sailed with a flip of the wrist for recreation or competition) is a flying disc toy. www.absoluteastronomy.com /encyclopedia/d/di/disk.htm   (834 words)

 Disk - Wikipedia, the free encyclopedia The hard disk and floppy disk are magnetic storage media used in computers. In astrophysics, an accretion disc or disk is a structure formed by material falling into a gravitational source. In the 19th century, disk became the conventional spelling for audio recordings made on a flat plate, such as the gramophone record; this usage gave rise to the modern term disk jockey. en.wikipedia.org /wiki/Disk   (541 words)

 Disk (mathematics)   (Site not responding. Last check: 2007-11-06) In geometry, a disk is an n-dimensional region, in Euclidean space, bounded by an (n−1)-dimensional hypersphere. A representative disk is three-dimensional volume element of a solid of revolution. In topology, a open disk and a closed disk in a metric space are synonymous with an open ball and closed ball. www.brainyencyclopedia.com /encyclopedia/d/di/disk__mathematics_.html   (190 words)

 Neck Herniated Disk The clavicle or collar-bone forms the lower limit of the neck, and laterally the outward slope of the neck to theshoulder is caused by the trapezius muscle. Disk came into the English language in the mid-17th century, and was modelled on words such as whisk ; disc arose some time later, and was based on the original Latin root discus. In the 19th century, disc became the conventional spelling for audio recordings made on a flat plate, such as the gramophone record ; this usage gave rise to the modern term disc jockey. www.altvetmed.com /face/6940-neck-herniated-disk.html   (809 words)

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