Quad
Encyclopedia
Quad may refer to:
Architecture
- QuadrangleQuadrangle (architecture)In architecture, a quadrangle is a space or courtyard, usually rectangular in plan, the sides of which are entirely or mainly occupied by parts of a large building. The word is probably most closely associated with college or university campus architecture, but quadrangles may be found in other...
in architecture, e.g., on a university campus - Quad, a dormitoryDormitoryA dormitory, often shortened to dorm, in the United States is a residence hall consisting of sleeping quarters or entire buildings primarily providing sleeping and residential quarters for large numbers of people, often boarding school, college or university students...
room or suite housing four residents - Quad CitiesQuad CitiesThe Quad Cities is a group of five cities straddling the Mississippi River on the Iowa–Illinois boundary. These cities, Davenport and Bettendorf and Rock Island, Moline, and East Moline , are the center of the Quad Cities Metropolitan Area, which, as of 2010, had an estimated population of...
, a region which includes the Iowa cities of Bettendorf and Davenport and the Illinois cities of Moline, East Moline, and Rock Island
Beer
- QuadrupelQuadrupelQuadrupel is the brand name of a strong seasonal beer La Trappe Quadrupel brewed by De Koningshoeven Brewery in the Netherlands, the only Trappist brewing abbey not in Belgium...
is a Belgian style ale of great strength with bolder flavor compared to its Dubbel and Tripel sister styles.
Games
- Quad Damage, a QuakeQuake (series)The Quake series is a line of first-person shooter video games produced by id Software.-Overview:The Quake series is somewhat unusual in that its focus changes frequently; the story of Quake II has nothing to do with Quake, and Quake III Arena has little to do with either of its predecessors...
and Unreal Tournament power-up - Quad, a type of combined robotic enemy in the Nintendo Gamecube game Metroid Prime 2
- Quad (more commonly Quads), four of a kind in poker
- Quad, a Harkonnen attack vehicle from the computer game Dune 2
- Quad cannon, an anti-air weapon in Command & Conquer: GeneralsCommand & Conquer: GeneralsCommand & Conquer: Generals is a real-time strategy game in the Command & Conquer series. Generals utilizes SAGE...
Music, theatre and film
- Quad (play)Quad (play)Samuel Beckett’s Quad was written in 1981 and first appeared in print in 1984 where the work is described as “[a] piece for four players, light and percussion” and has also been called a “ballet for four people.” It resembles something the shape-theatre ensemble Mummenschanz might have conceived,...
, by Samuel Beckett - Quad (music)Quad (music)Quad or QUAD was the name of a solo music project by Gary Ramon.During his six-year hiatus from Sun Dial, Ramon embarked on an ambitious solo project, Quad, which combined ambient electronica with kraut rock. The result was a pair of self-titled albums...
, a musical project by Gary Ramon - Quad (cinema)Quad (cinema)The Quad Cinema is New York City's first four-screen movie theater, and, according to its founder, the "East Coast's first multiplex". Located in Greenwich Village, it was opened by entrepreneur Maurice Kanbar, along with his younger brother Elliott Kanbar, in October 1972...
, art house in New York City - Quad ElectroacousticsQuad ElectroacousticsQuad Electroacoustics is a British manufacturer of hi-fi equipment, based in Huntingdon, England.- Corporate history :The company was founded by Peter J. Walker in 1936 in London, and was initially called S.P. Fidelity Sound Systems. In 1936 the name was changed to the Acoustical Manufacturing Co....
, a British manufacturer of electronic amplifiers, tuners and loudspeakers mainly for the high-end domestic market - QuadraphonicQuadraphonicQuadraphonic sound – the most widely used early term for what is now called 4.0 surround sound – uses four channels in which speakers are positioned at the four corners of the listening space, reproducing signals that are independent of one another...
, or four-channel sound - QuadropheniaQuadropheniaQuadrophenia is the sixth studio album by English rock band The Who. Released on 19 October 1973 by Track and Polydor in the UK, and Track and MCA in the US, it is a double album, and the group's second rock opera...
, a 1973 album by The WhoThe WhoThe Who are an English rock band formed in 1964 by Roger Daltrey , Pete Townshend , John Entwistle and Keith Moon . They became known for energetic live performances which often included instrument destruction... - Quad Toms, marching percussion instrument
- Quad, a film poster in the United Kingdom typically measuring 30 x 40 inches
- The QuadsThe QuadsThe Quads were a new wave band from Birmingham, England, active in the late 1970s and early 1980s. Their 1979 single "There Must Be Thousands" was a favourite of the BBC Radio 1 DJ John Peel...
, the British new-wave band - QuadCarbon, fictional corporation in movie Proof of LifeProof of LifeProof of Life is a 2000 American film, directed by Taylor Hackford. The title refers to a phrase commonly used to indicate proof that a kidnap victim is still alive...
- John Callahan's Quads!John Callahan's Quads!John Callahan's Quads! is a Canada-Australia co-production cartoon, based upon work of John Callahan. The show aired on Canada's Teletoon, on Australia's SBS, and in Latin America on Adult Swim...
, an animated series from Nelvana - Quad, a unit of computer storage measurement in the fictional Star TrekStar TrekStar Trek is an American science fiction entertainment franchise created by Gene Roddenberry. The core of Star Trek is its six television series: The Original Series, The Animated Series, The Next Generation, Deep Space Nine, Voyager, and Enterprise...
universe - Derby QUADDerby QUADDerby QUAD also referred to as QUAD Derby is an arts centre in Derby, United Kingdom, first opened on 26 September 2008. It has a steel and glass design by Bath architects Feilden Clegg Bradley. When it was chosen over competing designs by Derby council cabinet in 2004 it was considered...
, an arts centre in Derby, England - The Quad, a part of Hogwarts Castle (made only for films and games).
Science and mathematics
- Quadriceps, a group of muscles
- Quadruped, a creature or mechanism which moves on four legs
- Quad (energy)Quad (energy)A quad is a unit of energy equal to 1015 BTU, or 1.055 × 1018 joules in SI units.The unit is used by the U.S. Department of Energy in discussing world and national energy budgets. The global primary energy production in 2004 was 446 quad, equivalent to 471 EJ...
, a unit of energy (short for quadrillion) defined as 1015 British thermal unitBritish thermal unitThe British thermal unit is a traditional unit of energy equal to about 1055 joules. It is approximately the amount of energy needed to heat of water, which is exactly one tenth of a UK gallon or about 0.1198 US gallons, from 39°F to 40°F...
s (about 1.055 exajoule (EJ) or 1.055 × 1018 J) - QuadrilateralQuadrilateralIn Euclidean plane geometry, a quadrilateral is a polygon with four sides and four vertices or corners. Sometimes, the term quadrangle is used, by analogy with triangle, and sometimes tetragon for consistency with pentagon , hexagon and so on...
, a four sided figure in plane geometry - QuadraticQuadratic functionA quadratic function, in mathematics, is a polynomial function of the formf=ax^2+bx+c,\quad a \ne 0.The graph of a quadratic function is a parabola whose axis of symmetry is parallel to the y-axis....
, the second power in mathematics - Quadrangle (geography)Quadrangle (geography)In geology or geography, the word "quadrangle" usually refers to a United States Geological Survey 7.5-minute quadrangle map, which are usually named after a local physiographic feature. The shorthand "quad" is also used, especially with the name of the map; for example, "the Ranger Creek, Texas...
, a 7.5-minute topographic map produced by the United States Geological Survey, covering in greater detail one quarter of the area of a 15-minute map - Quadrilateralized Spherical CubeQuadrilateralized Spherical CubeIn mapmaking, a quadrilateralized spherical cube, or quad sphere for short, is an equal-area mapping and binning scheme for data collected on a spherical surface...
, a mapping scheme for data collected on a spherical surface, such as a planet - QUaDQUaDQUaD, an acronym for QUEST at DASI, is a ground based cosmic microwave backrground polarization experiment located at the South Pole...
, a telescope located at the South Pole that is designed to measure the cosmic microwave background radiation polarization - Quadratic Formula, the equation used to solve quadratic equations
Society and religion
- Quad, a derogatory term for a quadriplegicQuadriplegiaTetraplegia, also known as quadriplegia, is paralysis caused by illness or injury to a human that results in the partial or total loss of use of all their limbs and torso; paraplegia is similar but does not affect the arms...
- Quadrangle ClubQuadrangle ClubThe Princeton Quadrangle Club, often abbreviated to "Quad", is one of the ten eating clubs at Princeton University that remain open. Located at 33 Prospect Avenue, the club is currently "sign-in," meaning it permits any second semester sophomore, junior or senior to join...
, one of the ten eating clubs at Princeton University - BU Quad, student publication of Boston University started in 2009
Sports
- Quad, a boat configuration in rowingRowing (sport)Rowing is a sport in which athletes race against each other on rivers, on lakes or on the ocean, depending upon the type of race and the discipline. The boats are propelled by the reaction forces on the oar blades as they are pushed against the water...
that contains 4 people, with 2 oars each, and no coxswain - Quad, a chairliftChairliftAn elevated passenger ropeway, or chairlift, is a type of aerial lift, which consists of a continuously circulating steel cable loop strung between two end terminals and usually over intermediate towers, carrying a series of chairs...
in skiing which carries four persons - Quad (figure skating)Quad (figure skating)A quad, or "quadruple", is a figure skating jump with four or more, but fewer than five, revolutions. Most quadruple jumps have exactly four revolutions; the quadruple Axel has 4½ revolutions, although no figure skater to date has completed this jump, either in practice, or, more importantly, in...
, a figure skating jump with four revolutions - Quad skatesQuad skatesThe four-wheeled turning roller skate, or quad skate, with four wheels set in two side-by-side pairs, was first designed in 1863 in New York City by James Leonard Plimpton in an attempt to improve upon previous designs. The skate contained a pivoting action using a rubber cushion, and this allowed...
, roller skates with two wheels on each of two axles - Quad, A type of surfboardSurfboardA surfboard is an elongated platform used in the sport of surfing. Surfboards are relatively light, but are strong enough to support an individual standing on them while riding a breaking wave...
containing 4 fins - Quad, (Wrestling) A Dual Meet consisting of 4 teams. Also called a Quadangular.
- Quad, an All-Terrain Vehicle (ATV) with four wheels.
Technology
- Quad antennaQuad antennaThe quad antenna is an antenna which is frequently used by amateur radio operators. It consists of a driven element and parasitic elements, like a Yagi; however, the elements are square loops. If there is only one parasitic element it is referred to as a 'Cubical Quad' .- History :It was developed...
, a directional antenna - Quad-core, a multi-core processor with 4 cores
- QuadtreeQuadtreeA quadtree is a tree data structure in which each internal node has exactly four children. Quadtrees are most often used to partition a two dimensional space by recursively subdividing it into four quadrants or regions. The regions may be square or rectangular, or may have arbitrary shapes. This...
, a tree data structure typically used to partition a 2-dimensional space - Quad precision, a number stored using 16 eight-bit bytes, which is four times the size of 4-byte single precision
- Quad Flat Package, a type of package for surface mounted integrated circuit
- Quad ElectroacousticsQuad ElectroacousticsQuad Electroacoustics is a British manufacturer of hi-fi equipment, based in Huntingdon, England.- Corporate history :The company was founded by Peter J. Walker in 1936 in London, and was initially called S.P. Fidelity Sound Systems. In 1936 the name was changed to the Acoustical Manufacturing Co....
, a British manufacturer of electronic amplifiers, tuners and loudspeakers mainly for the high-end domestic market - Quad, an abbreviation for a type of videotape recorder, especially 2" Quadruplex videotape, where there are four record heads on a spinning drum which move perpendicular to the direction of tape travel
- Quad, telecommunication term referring to four conductors formation used to form two balanced pairsBalanced lineIn telecommunications and professional audio, a balanced line or balanced signal pair is a transmission line consisting of two conductors of the same type, each of which have equal impedances along their lengths and equal impedances to ground and to other circuits. The chief advantage of the...
- Star quad, four conductors in square formation, in which opposite conductors are connected in parallel at both ends to form a single, magnetically-concentric balanced pair, in order to minimise magnetic inductionMagnetic inductionMagnetic induction may refer to one of the following:* Electromagnetic induction* Magnetic field B is sometimes called magnetic induction...
- Star quad, four conductors in square formation, in which opposite conductors are connected in parallel at both ends to form a single, magnetically-concentric balanced pair, in order to minimise magnetic induction
- Quadraphonic sound, or four-channel sound
- quad, abbreviation for Quadrupole ion trapQuadrupole ion trapA quadrupole ion trap exists in both linear and 3D varieties and refers to an ion trap that uses constant DC and radio frequency oscillating AC electric fields to trap ions. It is commonly used as a component of a mass spectrometer...
- Em quadEm (typography)An em is a unit of measurement in the field of typography, equal to the currently specified point size.The name of em is related to M. Originally the unit was derived from the width of the capital "M" in the given typeface....
, in typography, a space that is as wide as the height of the font- En quadEn (typography)An en is a typographic unit, half of the width of an em. By definition, it is equivalent to half of the height of the font . As its name suggests, it is also traditionally the width of a lowercase letter "n"....
, a space that is one half the width of an em quad
- En quad
- QUAD (cipher)QUAD (cipher)In cryptography, the QUAD, cipher is a relatively new stream cipher, which was designed with provable security arguments in mind.-Description:...
, a stream cipher - Quadruple precision floating-point formatQuadruple precision floating-point formatIn computing, quadruple precision is a binary floating-point computer number format that occupies 16 bytes in computer memory....
, a data type in computer programming.
Vehicles
- QuadrigaQuadrigaA quadriga is a car or chariot drawn by four horses abreast . It was raced in the Ancient Olympic Games and other contests. It is represented in profile as the chariot of gods and heroes on Greek vases and in bas-relief. The quadriga was adopted in ancient Roman chariot racing...
- Quadruple combination fire apparatusFire apparatusA fire apparatus, fire engine, fire truck, or fire appliance is a vehicle designed to assist in fighting fires by transporting firefighters to the scene and providing them with access to the fire, along with water or other equipment...
that features a pump, tank, hose and a full complement of ground ladders - Quad, a tandem bicycleTandem bicycleThe tandem bicycle or twin is a form of bicycle designed to be ridden by more than one person. The term tandem refers to the seating arrangement , not the number of riders. A bike with two riders side-by-side is called a sociable.-History:Patents related to tandem bicycles date from the late 19th...
with four seats - Quad, a muscle carMuscle carMuscle car is a term used to refer to a variety of high-performance automobiles. The Merriam-Webster dictionary defines muscle cars as "any of a group of American-made 2-door sports coupes with powerful engines designed for high-performance driving." Usually, a large V8 engine is fitted in a...
with a four-barrel carburetor - Quad, the nickname of the Morris C8Morris C8The Morris Commercial C8 FAT commonly known as a Quad was an artillery tractor of the British and Commonwealth forces during World War II....
artillery gun tractor - Quad (rocket)Quad (rocket)In rocketry, the Armadillo aerospace Quad vehicle is a computer controlled VTVL rocket that is used to compete in the Lunar Lander Challenge.-General description:...
, an autonomous rocket by Armadillo Aerospace - Quads refer to four exhaust pipes (usually grouped two on each end) of a vehicle
- Quad bikes, four-wheeled all-terrain vehicles.
- other term for a speederSpeederA speeder is a maintenance of way motorized vehicle formerly used on railroads around the world by track inspectors and work crews to move quickly to and...
, a motorized vehicle used for maintenance of ways on railroads