| Rail transport in Great Britain | Rage Hard | Rail transport modelling |
| Radio Free AlbemuthA posthumously published novel by Philip K. Dick, Radio Free Albemuth is essentially a rewrite of his previous novel Valis with many of the strong elements of gnosticism in the latter work removed. The alternate history plot concerns the corrupt US Presid | Rational choice theoryRational choice theory is a way of looking at deliberations between a number of potential courses of action, in which " rationality" of one form or another is used either to decide which course of action would be the best to take, or to predict which cour | RappingRap music is one of the elements of hip hop; it is a form of rhyming lyrics spoken rhythmically over musical instruments, with a musical backdrop of sampling, scratching and mixing by DJs. Originally, rapping was called MCing and accompanied DJing. Origin |
| RadioFor other uses see: radio (disambiguation Radio is a technology that allows the transmission of signals by modulation of electromagnetic waves with frequencies below those of light. Radio waves Radio waves are a form of electromagnetic radiation, and are | Rational numberIn mathematics, a rational number (or informally fraction is a ratio of two integers, usually written as the vulgar fraction a ''b where b is not zero. The set of all rational numbers is denoted by Q or in blackboard bold. Using the set-builder notation i | Raised bed gardeningIn raised bed gardening the soil is formed in 3-4 foot (1. 2m) wide beds, which can be of any length. The soil is about 0. 5-1 foot (15-30cm) above the surrounding soil, sometimes enclosed by a frame generally made of wood or concrete blocks, and enriched |
| Raging BullRobert De Niro in Raging Bull Raging Bull is a 1980 film directed by Martin Scorsese, starring Robert De Niro as Jake LaMotta, a temperamental and paranoid but tenacious boxer who alienates himself from his friends and family. Also featured in the film ar | RapcoreRapcore also called rap/rock or rap/metal is the fusion of rap and rock, most often rapping and music that is closer to rock than rap, most often metal. The roots of rapcore can be found in albums by artists such as the Beastie Boys, Run DMC, and the Red | RaggamuffinRaggamuffin (or ragga is a kind of reggae that includes digitized backing instrumentation. It is a form of dancehall, and has been popular since the middle of the 1980s; "Under Me Sleng Teng" ( Wayne Smith; 1985) is usually recognized as the first ragga s |
| Radium | Radon | Random access |
| Racism | Race | Rammstein |
| Raymond Chandler | Ralph Nader | Radar |
| RAF (disambiguation) | Random variable | Railway Mail Service |
| Rail transport | Raster graphics | Raven Software |
| Radioactivity | Ragnarok | Random Access Memory |
| Ralph Merkle | Radiation | Rape |
| Ran (Goddess) | Radical | Range voting |
| Raelism | Race Game | Rapid |
| Radiosity | Radix sort | Raymond Kurzweil |
| Radical feminism | Ray tracing | Radian |
| Race riot | Radical Dreamers | Railtrack |
| Rajiv Gandhi | Racial profiling | Rankine |
| Rabbinical Assembly | Rainbow | Raven |
| Ramadan | Rainhill Trials | Rayleigh scattering |
| Ray Bradbury | Radio Row | Ralph Cudworth |
| Radiocarbon dating | Ralph Waldo Emerson | Rathaus Schöneberg |
| Raedwald of East Anglia | Radius | Rajasthan |
| Raphael of Brooklyn | Ralph Abercromby | Radiometric dating |
| Radon fluoride | Racial segregation | Range |
| Ramjet | Ranma ½ | Radioteletype |
| Radiation therapy | Ratatosk | Radiocarbon year |
| Rainer Maria Rilke | Rational root theorem | Rat |
| Radio Project | Ramsay-Hunt syndrome | Race and intelligence |
| Rachel Summers | Raku | Ragtime |
| Rashi | Rank (linear algebra) | Rain |
| Ragnar Anton Kittil Frisch | Rabbit | RAE |
| Range (statistics) | Radionuclide | Radioactive waste |
| Raven paradox | Ravenna | Rationalism (disambiguation) |
| Ramen | Radiation Laboratory at the Massachusetts Institute of Technology | Radiohead |
| Rapier | Raoult's law | Raphael (disambiguation) |
