All articles starting with R
22,461 articles
Ratchet & Clank: Going Commando
Ratchet & Clank: Going Commando, also known as Locked and Loaded or Ratchet & Clank 2, is Insomniac Games' 2003 PlayStation 2 action-platformer sequel that introduced weapon leveling, strafing, and challenge mode, scoring 90 on Metacritic.
Ratchet & Clank: Into the Nexus
Ratchet & Clank: Into the Nexus (Nexus in Europe/Australia) is Insomniac Games' 2013 PS3 platformer, the fourth and final Future saga epilogue, released 13 November 2013 at $29.99 with gravity puzzles and a Metacritic score of 76.
Ratchet & Clank: Rift Apart
Ratchet & Clank: Rift Apart (Insomniac Games, June 11, 2021) is a PS5-exclusive 3D platformer-shooter about Ratchet, Clank, and Rivet repairing a dimensional collapse; Metascore 88, PC port July 26, 2023.
Ratchet & Clank: Up Your Arsenal
Ratchet & Clank: Up Your Arsenal (Ratchet & Clank 3) is Insomniac Games' 2004 PlayStation 2 third-person shooter-platformer, the series' third entry, first with online multiplayer for up to eight players, Metacritic 91, remastered in the 2012 Ratchet & Clank Collection.
Ratchet: Deadlocked
Ratchet: Deadlocked, known as Ratchet: Gladiator, is a 2005 Insomniac Games platform shooter for PlayStation 2, the fourth Ratchet & Clank game, built around arena combat.
Ratcliffe-on-Soar Power Station
Ratcliffe-on-Soar Power Station was a 2,000 MW coal-fired power station in Nottinghamshire, England, and the last one operating in the UK when it closed in 2024.
Rate adaptation for 802.11
Rate adaptation for 802.11 is how a Wi-Fi transmitter adjusts its data rate to match channel conditions; the standard leaves the algorithm to vendors, with Minstrel the Linux default.
Rate equation
A rate equation, also called a rate law, relates the rate of a chemical reaction to reactant concentrations and is the central tool of chemical kinetics.
Rate gyro
A rate gyro is a gyroscope arranged to measure angular rate rather than attitude, using a spring-restrained gimbal; it serves in turn indicators, autopilots, spacecraft, and MEMS chips.
Rate limiting
Rate limiting is a traffic-control technique that restricts how many requests a client may make to a service in a time period, returning an error when exceeded.
Rate of change of frequency (RoCoF)
Rate of change of frequency (RoCoF) measures how quickly grid frequency changes, in Hz/s, after a generation-demand imbalance; it rises as inverter-based renewables displace synchronous generators.
Rate of convergence
Rate of convergence, also known as speed of convergence, is a numerical analysis characterization of how quickly a sequence of approximations approaches its limit, predicting iterations needed for a target accuracy.
Rate of fire
Rate of fire, also called firing rate, is the number of rounds fired per weapon per minute, the standard NATO measure, with cyclic, rapid, and sustained rates defined.
Rate of return
Rate of return, also called annual return or investment return, is the gain or loss on an investment expressed as a proportion of the amount invested.
Rate transient analysis
Rate transient analysis (RTA) is a petroleum engineering method that uses production rates and flowing pressures to estimate permeability, fracture properties, and oil or gas in place without shutting in the well.
Rate-and-state friction
Rate-and-state friction is an empirical friction law for rock in which strength depends on slip velocity and a state variable, introduced by Dieterich in 1979.
Rate-determining step
The rate-determining step is the slowest elementary step in a multistep reaction mechanism, which limits the overall reaction rate like the narrowest funnel in a series.
Rate-monotonic scheduling
Rate-monotonic scheduling is a fixed-priority, preemptive policy for periodic real-time tasks in which shorter periods get higher priority, proposed by Liu and Layland in 1973.
Rate–distortion optimization
Rate–distortion optimization (RDO) is an encoder-control technique in video and image coding that picks coding modes by minimizing reconstruction distortion subject to a bit-rate constraint, using the Lagrangian cost J = D + λ·R.
Rate–distortion theory
Rate–distortion theory, also called distortion-rate theory, is the branch of information theory that gives the minimum rate for representing a source when a specified distortion is tolerated.
Rated R (Queens of the Stone Age album)
Rated R, Queens of the Stone Age's second album (Interscope, 6 June 2000), recorded at Sound City with Homme, Oliveri, guests Lanegan and Halford; UK peak 54, reissued 2003, 2010, 2019.
Rated R (Rihanna album)
Rated R (2009) is Rihanna's fourth studio album on Def Jam, a dark pop/R&B record made after the Chris Brown assault; Rude Boy hit No. 1 on the Hot 100, Metacritic 75, 998,000 US copies sold by late 2010.
RateGain
RateGain Travel Technologies Limited is an Indian SaaS company founded by Bhanu Chopra in Noida in 2004, which became India's first publicly listed SaaS firm in December 2021.
Ratel IFV
The Ratel, or Ratel20 in its standard variant, is a South African 6x6 wheeled infantry fighting vehicle carrying a 20-mm cannon, in service since 1976 and the first wheeled IFV.
Rateless coding
Rateless coding, also called fountain coding, is a forward error correction technique generating as many encoding symbols as needed, so any slightly larger set of received symbols recovers the data.
Ratfucking
Ratfucking, also spelled Ratfuck, is American slang for covert political sabotage and dirty tricks, entering the national lexicon through Watergate-era reporting on Nixon's 1972 reelection campaign.
Ratha Kanneer (இரத்தக்கண்ணீர்)
Ratha Kanneer (இரத்தக்கண்ணீர், Tears of Blood) is a 1954 Tamil drama film by Krishnan–Panju, adapted from Tiruvarur K. Thangaraj's play, starring M. R. Radha as a westernized rich man who contracts leprosy; a Diwali 1954 hit preserved by NFAI in 2026.
Ratha Yatra (ରଥଯାତ୍ରା) (Puri)
Ratha Yatra (ରଥଯାତ୍ରା) is the annual Festival of Chariots at Puri, Odisha, where the deities Jagannatha, Balabhadra, and Subhadra are carried on wooden chariots to the Gundicha Temple.
Rathaavara
Rathaavara is a 2015 Kannada-language action film starring Sriimurali and Rachita Ram, directed by Chandrashekar Bandiyappa, which opened strongly across Karnataka on 4 December 2015.
Rathcroghan Chaos
Rathcroghan Chaos is a 430-km-diameter IAU-approved chaos terrain on Europa, centered near 10°S, 182°W, named after the Celtic seat of Queen Maev and adopted in January 2022.