All articles starting with L
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Lubricant
A lubricant is any material applied between surfaces in relative motion to reduce friction and wear; liquid lubricants such as engine oils are the most widely used type.
Lubricating oil
Lubricating oil is a petroleum-derived or synthetic liquid applied between moving surfaces to reduce friction and wear, and it also removes heat, seals out contaminants, and inhibits corrosion.
Lubrication
Lubrication, also called greasing, places a fluid, solid, or semi-solid film between surfaces in relative motion so shear occurs within the film, reducing friction and wear; its governing Reynolds equation dates to 1886.
Lubrication approximation
The lubrication approximation, also called the thin-film approximation, is a simplification of the Navier-Stokes equations for fluid flow in thin films, valid when film thickness is far smaller than lateral extent.
Lubrication regimes
Lubrication regimes are the distinct modes of interaction between a lubricant and surfaces in relative motion, classified as boundary, mixed, hydrodynamic, and elastohydrodynamic, and mapped on the Stribeck curve.
Lubrizol
Lubrizol is an American specialty chemical company headquartered in Wickliffe, Ohio, best known for lubricant and fuel additives, and a wholly owned Berkshire Hathaway subsidiary since 2011.
Lubuklinggau
Lubuklinggau (Kota Lubuklinggau), also Bumi Silampari, is a landlocked autonomous city in western South Sumatra, Indonesia; a transit hub on the middle Sumatra corridor with 249,054 residents, 401.50 km2, and full city status since 2001.
Lubumbashi
Lubumbashi, founded 1910 as Élisabethville, is the DRC's second-largest city and Haut-Katanga capital, built by Union Minière du Haut Katanga around copper smelting; a mining hub for copper and cobalt with rapid unplanned growth.
Lubuntu
Lubuntu is an official Ubuntu flavor using the lightweight LXQt desktop, first released in 2010. It shares Ubuntu's repositories and release schedule while targeting older hardware.
Lubusz Voivodeship
Lubusz Voivodeship (województwo lubuskie), a Polish province created 1 January 1999 with capitals Gorzów Wielkopolski and Zielona Góra; 13,988 km², about 964,000 people, Germany border, most forested region, UNESCO Park Mużakowski.
Luby's shooting
Luby's shooting (Luby's massacre): October 16, 1991 mass shooting at a Luby's Cafeteria in Killeen, Texas, where George Jo Hennard drove his truck inside and killed 23, wounded 27; deadliest single-gunman U.S. shooting at the time.
Lubyanka Building
The Lubyanka (Лубя́нка) is the building on Lubyanka Square in Moscow that has housed Soviet and Russian secret police from the Cheka and KGB to today's FSB, with a famous internal prison.
Luc Abalo
Luc Abalo (born 1984, Ivry-sur-Seine) is a retired French right wing. Three-time Olympic champion, three-time World and European champion with Les Experts; 289 caps, 859 goals; 2009 Champions League with Ciudad Real; retired February 2023.
Luc Alphand
Luc Alphand (born 1965, Briançon) is a French former alpine skier who won the 1997 World Cup overall title and four discipline globes, then became a racing driver, winning the 2006 Dakar Rally and racing nine 24 Hours of Le Mans.
Luc Anselin
Luc Anselin is a Belgian econometrician and regional scientist who founded spatial econometrics, created the GeoDa and SpaceStat software, and joined the National Academy of Sciences in 2008.
Lục bát
Lục bát (六八, six-eight) is a traditional Vietnamese verse form pairing six-syllable lines with eight-syllable lines, the dominant meter of Vietnamese folk poetry and of Nguyễn Du's Truyện Kiều.
Luc Berger
Luc Berger, born 1933 in Morges, Switzerland, is a Swiss condensed matter physicist and emeritus Carnegie Mellon professor known for theories of current-induced magnetic torques.
Luc Besson
Luc Besson, French director, screenwriter, and producer of Subway, Nikita, Léon, and The Fifth Element; founded EuropaCorp in 1999; directed 17 features grossing over $3.0 billion worldwide.
Luc Brunsveld
Luc Brunsveld is a full professor of chemical biology at TU Eindhoven, a member of the Royal Netherlands Academy, and scientific co-founder of Ambagon Therapeutics, known for supramolecular chemistry applied to proteins.
Luc d'Achery
Luc d'Achery (1609–1685) was a French Benedictine of the Congregation of Saint-Maur and librarian of Saint-Germain-des-Prés in Paris, whose 13-volume Spicilegium first printed many unpublished medieval texts and whose student was Jean Mabillon.
Luc Frieden
Luc Frieden, born in 1963, is a Luxembourgish politician of the Christian Social People's Party who has served as Prime Minister of Luxembourg since 2023.
Luc G.T. Morris
Luc G.T. Morris, often published as Luc Morris, is an American head and neck surgical oncologist and cancer immunogenomics researcher at Memorial Sloan Kettering Cancer Center in New York.
Luc Jouret
Luc Jouret (1947–1994) was a Belgian homeopathic physician who co-founded and co-led the Order of the Solar Temple with Joseph Di Mambro; he died in Switzerland in October 1994.
Luc Laeven
Luc Laeven is an economist who has directed research at the European Central Bank since 2015, teaches finance at Tilburg University, and co-created the Laeven–Valencia systemic banking crises database.
Luc Longley
Luc Longley (Lucien James Longley, born 1969) is an Australian 7'2" center, first Australian in the NBA (1991 Timberwolves draft, seventh pick) and three-time Chicago Bulls champion, 1996-98.
Luc Mbah a Moute
Luc Richard Mbah a Moute (The Prince), born 1986 in Yaounde, Cameroon, is a former NBA forward (UCLA, 2008 second-round pick) who played 12 seasons as an elite perimeter defender for the Bucks, Clippers, Rockets, and others before shoulder and knee injuries ended his career.
Luc Montagnier
Luc Montagnier (Jean Luc Montagnier) was a French virologist who co-discovered HIV at the Pasteur Institute in 1983, winning a share of the 2008 Nobel Prize in Physiology or Medicine.
Luc Perrin
Luc Perrin, who published as L. H. Perrin, was a Swiss physician-scientist in virology at Geneva known for early HIV diagnosis, a 1995 zidovudine trial, and a 2002 HIV superinfection report.
Luc Pillot
Luc Pillot (born 1959, Bar-sur-Seine), French 470-class sailor; with Thierry Péponnet won Olympic gold at Seoul 1988 and bronze at Los Angeles 1984; later America's Cup helmsman with Défi Areva.
Luc Robitaille
Luc Robitaille, born in Montreal in 1966, is a Canadian former NHL left wing who retired in 2006 as the highest-scoring left wing in NHL history.