All articles starting with R
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Robinson R44
The Robinson R44 is a four-seat, piston-engine light helicopter built by Robinson Helicopter Company of Torrance, California, first delivered in 1993 and among the best-selling civil helicopters.
Robinson R66
The Robinson R66 is a five-seat, single-engine light turbine helicopter built by Robinson Helicopter Company of Torrance, California. Its first turbine model, it received FAA certification in 2010 and uses a Rolls-Royce RR300 engine.
Robinson R88
The Robinson R88 is a ten-place, single-engine turbine utility helicopter developed by Robinson Helicopter Company of Torrance, California, unveiled in March 2025 as the company's largest model.
Robinson Treaties
Robinson Treaties: two 1850 agreements at Sault Ste. Marie between William B. Robinson and the Anishinaabe (Ojibwa) of Lakes Superior and Huron; precursors of the Numbered Treaties, with annuities frozen at $4 since 1875, litigated in Restoule (SCC 2024).
Robinson–Patman Act
The Robinson–Patman Act is a 1936 amendment to the Clayton Act that prohibits sellers from charging different purchasers discriminatory prices for commodities of like grade and quality.
Robinson–Schensted correspondence
The Robinson–Schensted correspondence, also called the Robinson–Schensted algorithm, is a bijection in combinatorics that assigns to each permutation a pair of standard Young tableaux of the same shape.
Robinson–Schensted–Knuth correspondence
The Robinson–Schensted–Knuth correspondence, or RSK algorithm, is a combinatorial bijection sending a permutation or matrix to a pair of semistandard Young tableaux of identical shape.
Robinson's Arch
Robinson's Arch is the monumental arch and staircase at the Temple Mount's southwest corner in Herodian Jerusalem, identified in 1838 and named after Edward Robinson.
Robinson's Crusoe
Robinson's Crusoe is a 2003 Taiwanese drama directed by Lin Cheng-sheng, starring Leon Dai, about a realtor who dreams of starting over on a private Caribbean island.
Robinsonade
A Robinsonade is a fictional work, named after Daniel Defoe's Robinson Crusoe of 1719, in which a person or group is stranded and must survive with limited resources.
Robinsonka
Robinsonka is a 1940 novel for young readers by the Czech writer Marie Majerová, in which a fifteen-year-old girl coping with her mother's death models herself on Robinson Crusoe.
Robinsons Island
Robinsons Island (Rustico Island), a barrier island in Prince Edward Island National Park, Canada, farmed by the Robinson family in the 1800s and now eroding rapidly into the Gulf of St. Lawrence; distinct from Robinson Crusoe Island, Chile.
Robion Kirby
Robion Kirby is an American mathematician at the University of California, Berkeley, who works on the topology of manifolds and is known for the Kirby calculus and the Kirby–Siebenmann invariant.
Robley Cook Williams
Robley Cook Williams (1908–1995) was an American biophysicist and virologist who pioneered electron microscopy of viruses and in 1955 took part in the first reconstitution of an infectious virus from its purified components.
Roblox
Roblox is a user-generated-content game platform and company founded by David Baszucki in 2004, where users build and play community-made 3D experiences monetized via Robux; 127 million DAUs, $3.6B 2024 revenue, and major child-safety regulation.
Roblox ban protests in Russia
Roblox ban protests in Russia: children's and parents' demonstrations and 63,000 complaint letters after Roskomnadzor blocked Roblox on December 3, 2025, over child-safety and LGBT-propaganda claims; the ban was lifted June 10, 2026.
Roblox Corporation
Roblox Corporation is an American company, founded by David Baszucki and Erik Cassel in 2004, that operates Roblox, a platform where users build and play 3D experiences.
Roblox oof
The Roblox oof is the platform's iconic default death sound, used from 2004 until a 2022 licensing dispute with Tommy Tallarico removed it, and restored by Roblox in July 2025.
Roblox Studio
Roblox Studio is the free toolset developers use to build, script, test, and publish 3D experiences on Roblox, scripting in Luau and releasing across PC, mobile, and console automatically.
Roblox–Schlep controversy
The Roblox–Schlep controversy is the 2025 dispute after Roblox banned and sent a cease-and-desist letter to Schlep, a YouTuber known for child-safety sting videos, triggering backlash.
Robo Shankar (music)
Robo Shankar (ரோபோ சங்கர்), born Shankar, was a Tamil film comedian and actor (1978 to 2025) known for his robot-style dance and the Sanikizhamai role in Maari (2015).
Robo-advisor
A robo-advisor is an automated digital investment advisory program that builds and manages a portfolio from an online questionnaire on goals and risk tolerance, with the first launched in 2008.
ROBO1
ROBO1, or Roundabout Guidance Receptor 1, is a human protein-coding gene whose receptor, activated by SLIT1 and SLIT2, controls axon midline crossing and neuronal migration.
Roboaria
Roboaria (Roboraria), Roman road station on the Via Latina in Latium, recorded in the Antonine Itinerary at the 13th or 16th mile, now unlocated, generally placed near Molara; site of a monastery visited by Nilus of Rossano in 998.
Roboat
Roboat is a family of autonomous surface vessels for urban waterways, started by MIT and the AMS Institute in Amsterdam in 2015 and made a spin-off company in 2023.
RoboBee
RoboBee is a family of insect-scale flapping-wing microrobots developed at the Harvard Microrobotics Laboratory since 2009 under Robert Wood, designed for flight, swimming, and controlled landing.
RoboBoat
RoboBoat is an international student competition, run by RoboNation since 2008, in which teams design and operate autonomous surface vehicles that complete tasks on the water.
RoboBrain
RoboBrain is a family of open-source embodied AI models developed by the Beijing Academy of Artificial Intelligence, released from February 2025, that lets robots plan long-horizon manipulation tasks.
RoboCar
RoboCar is the name of several autonomous vehicle research platforms, including ZMP's 1/10-scale robot car sold in Tokyo since 2009 and a full-size open-source vehicle from the University of Luxembourg.
Robocar Poli (로보카 폴리)
Robocar Poli (로보카 폴리) is a South Korean children's animation by ROI Visual and EBS, first aired February 2011, about a transforming vehicle rescue team, police car Poli, fire truck Roy, ambulance Amber, and helicopter Helly, in Brooms Town.