All articles starting with R
22,461 articles
Rincewind
Rincewind, the Wizzard, is Terry Pratchett's hapless Discworld wizard, first appearing in The Colour of Magic (1983). A failed Unseen University student with a Great Spell lodged in his head, he survives by running away.
Rinchan Shah
Rinchan Shah (رینچن شاہ) was a Buddhist prince from Ladakh who seized the throne of Kashmir and, after converting to Islam, became its first Muslim ruler in the early 1300s.
Rincon (lithium project)
Rincon is a lithium-brine mining project on the Salar del Rincón in Salta province, Argentina, owned by Rio Tinto and its first commercial-scale lithium operation.
Rincon Colorado
Rincón Colorado, in General Cepeda, Coahuila, is Mexico's first paleontological zone open to the public, inaugurated 21 November 2018, preserving 72-million-year-old Late Cretaceous hadrosaurs including Velafrons coahuilensis.
Rincón, Puerto Rico
Rincón, Puerto Rico: west-coast municipality founded 1771-1772 as Santa Rosa de Rincón, nicknamed Town of Beautiful Sunsets and surfing capital; hosted the 1968 World Surfing Championship; population about 15,200.
Rind Corona
Rind Corona is a 140-km-wide corona, a quasi-circular volcano-tectonic depression, on Venus in Hinemoa Planitia at 8.2°N, 247.5°E; a Class U (simple depression) corona and a source of young lobate lava plains.
Rind et al. controversy
Rind et al. controversy: dispute over the 1998 Psychological Bulletin meta-analysis by Rind, Tromovitch, and Bauserman of 59 college-sample CSA studies, its congressional condemnation, and scholarly critiques and rebuttals.
Rind ü Zâhid
Rind ü Zâhid is a Persian prose dialogue by the sixteenth-century poet Fuzûlî, debating life, love, and worship between an ascetic father and a libertine son.
Rinderpest
Rinderpest, the cattle plague, was a highly contagious viral disease of cattle, buffalo, and wild ungulates; first animal disease eradicated, last case Kenya 2001, world declared free 2011, virus stocks now sequestered.
Rinderpest panzootic in East Africa
The rinderpest panzootic in East Africa was the late-1880s outbreak of cattle plague that killed over 90 percent of cattle, causing famine and colonial conquest.
Rinderpest panzootic in Southern Africa
The rinderpest panzootic in Southern Africa was the 1896–1897 outbreak of cattle plague that killed over 95 percent of African herds south of the Zambezi, devastating regional economies.
Rindler coordinates
Rindler coordinates, known as Rindler space or the Rindler metric, are coordinates for flat Minkowski spacetime adapted to uniformly accelerated observers, covering only one quadrant and bounded by the Rindler horizon.
Rineke Dijkstra
Rineke Dijkstra is a Dutch photographer and video artist, born 1959 in Sittard, Netherlands, known for large-format frontal portraits of people in transitional states, especially adolescents.
Ring (company)
Ring is an American home security company owned by Amazon, known for the Ring Video Doorbell. Founded by Jamie Siminoff as DoorBot, it was acquired by Amazon in 2018.
Ring (film)
Ringu (リング) is Hideo Nakata's 1998 Japanese horror film adapting Koji Suzuki's novel about a cursed videotape killing viewers in seven days; it sparked the J-horror boom and was remade as The Ring (2002).
Ring (jewellery)
Ring (jewellery), also finger ring: a circular band worn on the finger as ornament, token, matrimonial symbol, or insignia. Covers anatomy, ISO/US/UK sizing, hallmarking, named types, history, and the 2023 lab-grown diamond shift.
Ring (mathematics)
In mathematics, a ring is a set with addition and multiplication forming an Abelian group under addition and linked by distributive laws; the integers are a familiar example.
Ring (リング) (Suzuki novel)
Ring (リング) is a 1991 horror novel by Koji Suzuki, which details a journalist investigating a cursed videotape that kills viewers exactly seven days after viewing it.
Ring 0: Birthday (リング0 バースデイ)
Ring 0: Birthday (リング0 バースデイ, Ringu 0: Basudei) is a 2000 Japanese horror prequel directed by Norio Tsuruta, based on Koji Suzuki's Lemon Heart, starring Yukie Nakama as 18-year-old Sadako in a theater troupe, released by Toho on January 22, 2000.
Ring 2 (リング2)
Ring 2 (リング2) is a 1999 Japanese horror film, the direct sequel to Ring, directed by Hideo Nakata, starring Miki Nakatani, in which Sadako's corpse proves she survived 30 years in the well and her curse multiplies through copied videotapes.
Ring a Ring o' Roses
Ring a Ring o' Roses (Ring Around the Rosie) is an English nursery rhyme and circle singing game, Roud 7925, first printed complete in 1881; the plague-origin story is a 1950s folk etymology.
Ring Alarm
Ring Alarm is a do-it-yourself wireless home security system sold by Ring, an Amazon company, announced in 2018 at $199 with optional 24/7 professional monitoring.
Ring all-reduce
Ring all-reduce is a collective communication algorithm in which devices in a logical ring combine arrays, such as deep learning gradients, with data per device independent of device count.
RING and U-box E3 ubiquitin ligases
RING and U-box E3 ubiquitin ligases: the largest E3 ligase class, scaffold enzymes that align E2~ubiquitin with substrates and transfer ubiquitin directly, without an E3~Ub intermediate; RING domains bind two zinc ions, U-box domains are zinc-free analogs.
Ring annuloplasty
Ring annuloplasty is a valve repair operation in which a prosthetic ring is sutured around the mitral or tricuspid valve annulus to restore its normal size and shape.
Ring Attention
Ring Attention is a distributed-computing method introduced in October 2023 by Hao Liu, Matei Zaharia, and Pieter Abbeel that shards transformer attention across devices arranged in a ring.
Ring barrier controller
A ring barrier controller is a traffic signal controller, standard in United States practice, that organizes phases into rings meeting at barriers so conflicting movements never run simultaneously.
Ring boy scandal
Ring boy scandal: allegations that WWF/WWE ring announcer Mel Phillips sexually exploited teenage ring crew boys in the late 1980s and early 1990s, leading to 1992 departures of Phillips, Terry Garvin, and Pat Patterson, and an October 2024 negligence lawsuit against WWE, Vince and Linda McMahon, and TKO under Maryland's Child Victims Act.
Ring Christlich-Demokratischer Studenten
The Ring Christlich-Demokratischer Studenten (RCDS) is a federation of Christian democratic student groups at German universities, founded in 1951 and close to the CDU and CSU.
Ring chromosome 1 syndrome
Ring chromosome 1 syndrome (r(1) syndrome, Ring 1) is an ultra-rare autosomal chromosomal anomaly, under 1 per million, causing growth failure, microcephaly, developmental delay, intellectual disability, and possible malignancy predisposition.