Sector

Sector may refer to

Places

• Sector, Devon, a location in the county of Devon in south-western england
• Sector, West Virginia, an unincorporated community in Hampshire County, West Virginia, United States of America

In computing

• Cylinder-head-sector (or "CHS"), an early method for giving addresses to each physical block of data on a hard drive
• Disk sector, a physical subdivision of space on a computer disk-storage medium, specifically a subdivision of a "track"
• in portal rendering, a convex polygonal segment of map-space used to facilitate calculation of the visibility of objects in a computer display

In mobile communications networks

• Sector_antenna, to see the area spanned by an antenna on a mobile phone mast

Geographic subdivisions

• Sector (country subdivision)

Geometry

• Circular sector, also known as a "pie piece", the portion of a circle enclosed by two radii and an arc
• Spherical sector, portion of a sphere enclosed by two radii from the center of the sphere.
• Hyperbolic sector, is a region of the Cartesian plane bounded by rays from the origin to two points (a, 1/a) and (b, 1/b) and by the hyperbola xy = 1.

Fictional uses

• Sector (Star Trek), a fictional area of space-designation used in the Star Trek universe for interstellar navigation
• Sector General, a series of books about an interstellar hospital in Space, written by James White

Other uses

• Sector (economic): one of several subdivisions in an economic system (used for analysis and classification)
• Sector (instrument), also known as a "proportional compass" or "military compass", a calculating instrument consisting of two rulers (of equal length) joined by a hinge
• Sector lights, one of three areas relative to a shallow-water navigational channel
• Sector (Air Traffic Control), a three dimensional zone within controlled airspace in which aircraft are under the control of a specific air traffic controller.
• United States Coast Guard Sectors, a shore-based operational unit of the United States Coast Guard
• "SECTOR", a United States nationwide radio network operated by the U.S. Immigration and Customs Enforcement

See also

• Zone (disambiguation)
• Region
• Area