All articles starting with J
20,615 articles
J-curve
The J-curve is an economic pattern where a value first dips below its starting point and then recovers beyond it, seen in trade balances after devaluation.
J-hip-hop
J-hip-hop, also known as Nihongo rap (日本語ラップ) or J-rap, is the Japanese hip-hop scene, rooted in Tokyo street culture after 1983 and a chart-leading part of Japanese popular music by the 2010s.
J-Hope
J-Hope (제이홉), real name Jung Ho-seok (정호석), is a South Korean rapper and dancer in BTS; solo since 2022, he headlined Lollapalooza and toured the world in 2025.
J-Hope discography
J-Hope discography: solo releases by BTS rapper Jung Ho-seok (정호석), from the 2018 Hope World mixtape and "Daydream" through Jack in the Box (2022), Hope On The Street Vol.1 (2024), and 2025 singles.
J-integral
The J-integral is a path-independent contour integral characterizing energy release rate and crack-tip field severity in elastic and elastic-plastic fracture mechanics, introduced by J. R. Rice in 1968 and standardized in ASTM E1820.
j-invariant
The j-invariant is a quantity attached to an elliptic curve, taking the same value on two curves exactly when they are isomorphic over an algebraically closed field.
J-pop (ジェイポップ)
J-pop (ジェイポップ) is the umbrella term for Japanese popular music from the 1990s onward, coined by FM radio and Tower Records Japan, succeeding kayōkyoku; over two-thirds of its songs contain English, and Japan is the world's second-largest music market.
J-POWER Tachibana-wan power station
Tachibana-wan Thermal Power Station (橘湾火力発電所) is a coal-fired power station in Anan, Tokushima Prefecture, Japan, owned by J-POWER, with two 1,050 MW units commissioned in 2000.
J-rock
J-rock (日本のロック) is the umbrella term for rock music made in Japan, a broad industry label spanning pop rock, punk, metal, and alternative scenes rather than one sound.
J-Rod (wrestler)
J-Rod (Jessica Roden, born 1992) is an American independent professional wrestler, "The Ultimate Athlete" and former American Gladiator Supernova, known for OVW, JCW Women's Championship, and TJPW title challenges.
J-shaped sella turcica
J-shaped sella turcica (omega-shaped or shoe-shaped sella), a J-shaped variant of the pituitary fossa on lateral skull imaging; a normal variant in 5-6% of children, also linked to mucopolysaccharidoses, achondroplasia, and optic chiasm glioma.
J-Stars Victory VS
J-Stars Victory VS (ジェイスターズ ビクトリーバーサス) is a 2014 Bandai Namco/Spike Chunsoft team arena fighter crossing 52 Weekly Shonen Jump characters across 32 series; the 2015 international VS+ added PS4 and Arcade Mode.
J-Style Trip (周游记)
J-Style Trip (周游记) is a Zhejiang TV outdoor reality show initiated by Jay Chou, blending travel, music, and street magic across three seasons (2020, 2023-24, 2025); season 1 was Netflix's first Chinese-language reality series, and a fourth season is due in 2026.
J-TEXT
J-TEXT, or Joint Texas Experimental Tokamak, is a medium-sized iron-core tokamak at Huazhong University of Science and Technology in Wuhan, China, with first plasma in 2007.
J-Tong
J-Tong (제이통), born Lee Jung-hoon in 1988, is a South Korean rapper from Busan who leads the Buckwilds crew and debuted in 2011 with the EP Busan.
J-XX
J-XX, also written J-X or XXJ, was the placeholder designation Western observers used from the mid-2000s for China's fifth-generation stealth fighter program, which proved to be the Chengdu J-20.
J. A. Bayona
J. A. Bayona (Juan Antonio García Bayona, born 1975, Barcelona) is a Spanish film director of The Orphanage, The Impossible, A Monster Calls, Jurassic World: Fallen Kingdom, and Society of the Snow, a 12-Goya and Oscar-nominated drama.
J. A. Happ
J.A. Happ (James Anthony Happ, born 1982) is a retired MLB left-handed starting pitcher, 133-100 with a 4.13 ERA over 15 seasons; 20-game winner with Toronto in 2016 and 2018 All-Star.
J. A. Ratcliffe
J. A. Ratcliffe, known as John Ashworth Ratcliffe, was a British radio physicist at Cambridge who helped prove radio waves reflect from the ionosphere and trained wartime radar scientists.
J. A. Todd
J. A. Todd, full name John Arthur Todd (1908–1994), was an English mathematician at Cambridge known for the Todd genus, Todd class, and Todd–Coxeter algorithm.
J. Alan Diehl
J. Alan Diehl is an American cancer biologist known for work on cyclin D1 and CDK4/6 kinases in cancer; he chairs biochemistry at Case Western Reserve University since 2019.
J. Alexander (model)
J. Alexander (Alexander Jenkins), Miss J, is an American runway coach and TV personality from the South Bronx who coached models for Gaultier, Chanel, and Valentino, coached and judged America's Next Top Model from 2003, taught at SCAD, and revealed a 2022 stroke in Netflix's Reality Check.
J. Alexander McMahon
J. Alexander McMahon (1921–2008) was an American lawyer and health care executive who served as president and CEO of the American Hospital Association for fourteen years.
J. Allan Hobson
J. Allan Hobson, full name John Allan Hobson (1933–2021), was an American psychiatrist and sleep researcher at Harvard who argued dreams are products of brain physiology.
J. Allen Hynek
J. Allen Hynek (Josef Allen Hynek) was an American astronomer who advised the Air Force's Project Blue Book and coined "close encounters of the third kind."
J. André Knottnerus
J. André Knottnerus, also known as André Knottnerus, is a Dutch physician and epidemiologist who was professor of general practice research at Maastricht University from 1988.
J. Andrew McCammon
J. Andrew McCammon is an American theoretical chemist and biophysicist at UC San Diego who performed the first molecular dynamics simulation of a protein in 1976.
J. Anthony G. Scott
J. Anthony G. Scott, full name John Anthony Gerard Scott, is a clinician and epidemiologist, Professor of Vaccine Epidemiology at LSHTM, known for pneumococcal disease research in Kilifi, Kenya.
J. Anthony Movshon
J. Anthony Movshon, also published as J. A. Movshon, is an American and British neuroscientist at New York University known for research on visual motion processing in area MT.
J. August Richards
J. August Richards (Jaime Augusto Richards III, born 1973) is an American actor known as Charles Gunn on Angel and Mike Peterson/Deathlok on Agents of S.H.I.E.L.D., later Victor Dashkov in Vampire Academy, who came out as gay in 2020.