All articles starting with Q
2,252 articles
Quart
The quart is a unit of volume equal to one quarter of a gallon, with a U.S. liquid quart of about 0.946 liter, a larger dry quart, and a British Imperial quart of 1.136 liters.
Quart Festival
Quart Festival (Quart-festivalen) was a rock music festival in Kristiansand, Norway, first held in 1991 as Quadradurmusivalen; Norway's largest rock festival before bankruptcy in 2008 and a failed 2009 revival.
Quarta Colônia UNESCO Global Geopark
Quarta Colônia UNESCO Global Geopark is a UNESCO Global Geopark in central Rio Grande do Sul, Brazil, designated in 2023 and known for Triassic rocks with some of the oldest dinosaur fossils.
Quarta330
Quarta330 is a Tokyo-based Japanese electronic producer, the alias of Toru Koda, who fuses Game Boy chiptune with dubstep and footwork on the UK label Hyperdub.
Quartal and quintal harmony
Quartal and quintal harmony are methods of building chords by stacking fourth or fifth intervals instead of the traditional third. This creates an open, undecided sound.
Quarter (Canadian coin)
The Canadian quarter is the 25-cent circulation coin first issued in 1870, carrying Emanuel Hahn's caribou reverse since 1937, 23.88 mm in diameter, cupronickel, and the most commemorated Canadian coin.
Quarter (United States coin)
The quarter, formally the quarter dollar, is the United States 25-cent coin, produced since 1796 and known for rotating commemorative reverse designs such as the 50 State Quarters of 1999 to 2008.
Quarter car model
The quarter car model is a simplified vehicle dynamics model of one wheel, its suspension, and a quarter of the body, used to study ride comfort.
Quarter note
Quarter note (crotchet, German Viertelnote): a note value one quarter of a whole note, filled notehead with stem and no flag; beat unit in 4/4, 2/4, 3/4 and the standard metronome unit.
Quarter Pounder
Quarter Pounder: McDonald's hamburger named for its 4 oz pre-cooked beef patty, created by Al Bernardin in Fremont, California in 1971, added to the U.S. national menu in 1973, switched to fresh beef in 2018, and sold abroad as the Royal Cheese or McRoyal Cheese.
Quarter tone
Quarter tone: a 50-cent musical interval, half a semitone, forming the basis of 24-tone equal temperament (24-TET), used in Arabic maqam notation and by composers such as Hába, Ives, and Wyschnegradsky.
Quarter-life crisis
A quarter-life crisis is a period of confusion and instability in emerging adulthood, ages 18 to 30, named in a 2001 book by Alexandra Robbins and Abby Wilner.
Quarter-wave plate
A quarter-wave plate, or λ/4 plate, is an optical element made of birefringent material that delays one polarization component by a quarter wavelength, converting linear into circular or elliptically polarized light.
Quarterback
The quarterback (QB) is the offensive back in American football who takes the snap from the center and, on passing plays, throws the forward pass to a receiver.
Quarterback (2023 TV series)
Quarterback is a Netflix sports docuseries (premiered July 12, 2023) produced by NFL Films, Omaha Productions, and 2PM Productions, following NFL quarterbacks such as Patrick Mahomes, Kirk Cousins, Joe Burrow, and Joe Flacco on and off the field across three seasons.
Quarterback sack
Quarterback sack: NFL football play where a defender tackles the quarterback behind the line of scrimmage on a pass attempt; term coined by Deacon Jones in 1967, official NFL statistic since 1982; Bruce Smith holds the career record with 200 sacks.
Quarterflash
Quarterflash (formerly stylized QuarterFlash), an American pop/rock band formed in 1980 in Portland, Oregon from Seafood Mama and Pilot, led by Rindy and Marv Ross; their 1981 debut hit No. 8 and went platinum on the strength of "Harden My Heart" (Hot 100 No. 3, Mainstream Rock No. 1).
Quartering Acts
The Quartering Acts were two British laws of 1765 and 1774 requiring American colonies to house and pay for British soldiers, a major grievance of the Revolution.
Quarterlife
Quarterlife is a 2007 American web drama by Marshall Herskovitz and Edward Zwick: 36 eight-minute episodes on MySpace and quarterlife.com, then NBC's first Web-to-TV prime-time series, canceled after one episode in February 2008.
Quarterly Review
The Quarterly Review was a British literary and political periodical published in London by John Murray from 1809 to 1967, founded as a Tory counterweight to the Edinburgh Review.
Quartermaster
Quartermaster: army officer for quarters, rations, clothing and supplies, and naval petty officer for steering and signals; from French quartier via German Quartiermeister; US Quartermaster Corps founded 16 June 1775.
Quarterstaff
A quarterstaff is a wooden staff about 6 to 9 feet long, often tipped with iron, used in England as a weapon from the late Middle Ages into the 17th century.
Quartet
Quartet: a four-player ensemble or a work for four, one player per part. Best known as the string quartet (two violins, viola, cello), founded as a genre by Haydn's 68 quartets and Op. 33 (1781).
Quartet (2012 film)
Quartet (2012 film) is a British comedy-drama directed by Dustin Hoffman. It stars Maggie Smith and Tom Courtenay in a story set in an English opera home.
Quartet Health
Quartet Health was a New York City-based value-based behavioral healthcare platform founded in 2014 by Arun Gupta and Steve Shulman, acquired by NeuroFlow in 2025.
Quartett
Quartett, also Quartets, is the German ask-and-collect card game of the quartet group, equivalent to Happy Families and Authors; players collect sets of four, often from themed 32-card packs also used for Top Trumps.
Quartic function
A quartic function is a polynomial function of degree four, solved generally by Lodovico Ferrari's method in 1540. It is the highest degree solvable by radicals.
Quartier asiatique
Quartier asiatique, or Triangle de Choisy, is Paris's largest Asian district in the 13th arrondissement, formed after 1975 by Indochinese refugees; distinct from Belleville and Arts-et-Métiers quarters.
Quartier du Stade at Delos
Quartier du Stade (Stadium Quarter, Συνοικία του Σταδίου), residential-industrial district of Delos east of the stadium, formed after 167 BCE free-port boom; houses, perfumery, submerged quay, possible second port.
Quartile
A quartile is one of three cut points dividing ordered data into four equal groups: Q1 at the 25th percentile, Q2 the median, and Q3 the 75th.