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Look up quadrant in Wiktionary, the free dictionary. |
Quadrant may refer to:
- A sector equal to one quarter of a circle, or half a semicircle, see Circular sector
- The sectors of a two-dimensional cartesian coordinate system, see Cartesian coordinate system#Quadrants and octants
- A quadrant or section in a city street nomenclature system, see Address (geography)#Quadrants
- Quadrant (anatomy), a division of the abdominal cavity
- Quadrant (architecture) a building which arcs in 90 degree manner
- Quadrant (astronomy), a rectangular division of the celestial sphere
- Quadrant Cycle Company, 1899 manufacturers in Britain of the Quadrant motorcar
- Quadrant (instrument), an angle or time measuring instrument
- Quadrant (album), a 1977 album by Joe Pass and Milt Jackson
- Quadrant (motorcycles)
- Quadrant (magazine), an Australian journal
- Quadrant Bus Station, Swansea Wales
- Quadrant Shopping Centre, Swansea, Wales
- Quadrant Park, a nightclub in Liverpool, Merseyside
- Quadrant:MK, Network Rail's headquarters campus in Milton Keynes
- HMS Quadrant (G11), a Second World War British/Australian warship
- First Quebec Conference, 1943 (codenamed "QUADRANT")
- Quadrant Records, an independent record label
- Triumph Quadrant, a four-cylinder motorcycle
- Galactic quadrant, one of four circular sectors in the division of the Milky Way galaxy
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Quadrant (plane geometry)
The axes of a two-dimensional Cartesian system divide the plane into four infinite regions, called quadrants, each bounded by two half-axes.
These are often numbered from 1st to 4th and denoted by Roman numerals: I (where the signs of the two coordinates are (+,+)), II (−,+), III (−,−), and IV (+,−). When the axes are drawn according to the mathematical custom, the numbering goes counter-clockwise starting from the upper right ("northeast") quadrant.
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External links
Quadrant Cycle Company
The Quadrant Cycle Company was a company in Birmingham, England that was established in 1890 as a bicycle manufacturer. They advanced to make motorcycles from 1899 until their demise in 1928. They also made a tricar called Carette in 1899 and a small number of cars for about two years around 1906.
The company exhibited a car chassis with a four-speed Lloyd gearbox of the style known as "crossed rollers"; this allowed direct drive at all speeds. The used 14/16 or 20/22 hp engines made by White and Poppe.
See also
References
David Burgess Wise, The New Illustrated Encyclopedia of Automobiles.
Made in Birmingham, The Birmingham Motorcycle Industry
