همهٔ صفحهها
- R(asipuram) K(rishnaswamy) Narayan
- R(onald) Laing
- R(onnie) Walter Cunningham
- RAID
- RAM
- RCA Corporation
- REM sleep
- RKO
- RNA
- ROSAT
- RR Lyrae Star
- RSA encryption
- Ra
- Raabe, Wilhelm
- Rab
- Rabanus Maurus
- Rabat
- Rabaul
- Rabbit
- Rabelais, François
- Rabemananjara, Jacques
- Rabi, Isidor Isaac
- Rabies
- Rabin, Yitzhak
- Rabindranath Tagore
- Rabino, Yacant Louis
- Rabuka, Sitiveni
- Raccoon
- Race
- Race riots
- Rachel (1821-1858)
- Rachel (Old Testament)
- Rachel Carson
- Rachel Ruysch
- Rachmaninov, Sergei
- Raciborz
- Racine, Jean Baptiste
- Racism
- Rack railway
- Rackets
- Rackett
- Rackham, Arthur
- Raczynski, Edward
- Rad
- Radar
- Radar astronomy
- Radcliffe, Ann Ward
- Radcliffe-Brown, Alfred Reginald
- Radclyffe Hall
- Radek, Karl
- Radelzky, Joseph
- Radetzky, Joseph
- Radha
- Radhakrishnan, Sarvepalli
- Radhasoami
- Radial artery
- Radial circuit
- Radial nerve
- Radial velocity
- Radian
- Radiant energy
- Radiant heat
- Radiata pine
- Radiation
- Radiation biology
- Radiation monitoring system
- Radiation pressure
- Radiation sickness
- Radiation units
- Radic, Stjepan
- Radical
- Radicalism
- Radicle
- Radiguet, Raymond
- Radin, Paul
- Radio
- Radio Button
- Radio France Internationale (RFI)
- Radio Monte Carlo
- Radio astronomy
- Radio audizioni Italiana (RAI)
- Radio beacon
- Radio galaxy
- Radio receiver
- Radio telescope
- Radio wave
- Radioactive decay
- Radioactive series
- Radioactive tracer
- Radioactive waste
- Radioactivity
- Radiocarbon cycle
- Radiocarbon dating
- Radiochemistry
- Radiography
- Radiohead
- Radioimmunoassay
- Radioisotope
- Radioisotope scanning
- Radiology
- Radiometer
- Radiometric dating
- Radiosonde
- Radiotherapy
- Radish
- Radisson, Pierre Esprit
- Radium
- Radius
- Radom
- Radon
- Radovan Karadzic
- Radu Lupu
- Radziwill, Family
- Raeburn, Henry
- Raeder, Erich
- Raedwald
- Raeto-Romanic
- Rafael Alberti
- Rafael Angel Calderón Guardia
- Rafael Bombelli
- Rafael Callejas Romero
- Rafael Carerra
- Rafael Nunez
- Rafael Sabatini
- Rafael Trujillo Molina
- Raffles, Stamford
- Rafflesia
- Raft, George
- Rafter, Patrick
- Raga
- Ragged schools
- Raging Bull
- Ragnar Frisch
- Ragnarok
- Ragtime
- Ragusa
- Ragusa (province)
- Ragweed
- Ragwort
- Rahab
- Rahner, Karl
- Rai, Aishwarya
- Raicho Hiratsuka
- Raikes, Robert
- Raikov, Zdrava
- Rail
- Railway
- Rain
- Rain Man (movie)
- Rainbow
- Rainbow Division
- Rainbow Serpent
- Rainbow coalition
- Raine, Kathleen
- Rainer Fassbinder
- Rainer Maria Rilke
- Rainfall gauge
- Rainforest
- Rainier
- Rainier III
- Rainmaker
- Rains, Claude
- Rainwater, James
- Rais, Gilles de
- Raised beach
- Raisin
- Raj, the
- Raj Kapoor
- Raja Rao
- Rajagopalachari, Chakravarti
- Rajah
- Rajah (Rogers) Hornsby
- Rajahmundry
- Rajendra Prasad
- Rajiv Gandhi
- Rajkot
- Rajput
- Rakoczy
- Raku
- Raleigh
- Raleigh, Walter
- Raleigh, Walter (professor)
- Ralf Gustav Dahrendorf
- Rallentando
- Ralph Abercromby
- Ralph Allen Sampson
- Ralph Asher Alpher
- Ralph Bunche
- Ralph Cram
- Ralph Cudworth
- Ralph Earl
- Ralph Ellison
- Ralph Fiennes
- Ralph Lauren
- Ralph Linton
- Ralph Perry
- Ralph Richardson
- Ralph Vaughan Williams
- Ralph Waldo Emerson
- Ram Das
- Ram Mohun Roy
- Rama
- Ramakrishna
- Raman, Chandrasekhara Venkata
- Ramana Maharishi
- Ramanuja
- Ramanujan, Srinivasa Aaiyangar
- Ramat Gan
- Ramayana
- Rambert, Marie
- Rambod Shekarabi
- Rambouillet
- Rambouillet, marquise de
- Rameau, Jean-Philippe
- Ramelli, Agostino
- Ramgoolam, Navin Chandra
- Ramiro de Leon Carpio
- Ramiz Alia
- Ramjet
- Ramon Grau San Martin
- Ramon Jose Sender
- Ramon Lull
- Ramon Magsaysay
- Ramon Maria Narvaez
- Ramon Maria de Valle-Inclan
- Ramon Perez de Ayala
- Ramon Villeda Morales
- Ramon de la Cruz
- Ramon y Cajal, Santiago
- Ramos, Fidel
- Rampal, Jean Pierre
- Ramree
- Ramsay, Allan
- Ramsay, Allan (poet)
- Ramsay, Bertram
- Ramsay, William
- Ramsay MacDonald
- Ramses I
- Ramses II
- Ramses III
- Ramsey, Alf(red)
- Ramsey, Norman
- Ramsey Clark
- Ramus, Petrus
- Ramuz, Charles Ferdinand
- Ramón Castilla
- Ranalf Glanville
- Ranasinghe Premadasa
- Rancagua
- Rance
- Ranchi
- Ranching
- Rand, Ayn
- Randers
- Randfontein
- Randolph, Thomas
- Randolph Bourne
- Randolph Caldecott
- Randolph Scott
- Random House, Inc
- Random access
- Random numbers
- Randstad
- Range
- Range check
- Rangefinder
- Rangi
- Ranitidine
- Ranjit Singh
- Rank, Arthur
- Rank, Otto
- Ranke, Leopold von
- Rankin, Jeannette
- Rankine, William
- Rann of Kutch
- Ransom, John Crowe
- Ransom Eli Olds
- Ransome, Arthur
- Ransome-Kuti, Olunfunmilayo
- Ranters
- Ranunculus
- Rao, P(amulaparti) V(enkata) Narasimha
- Rao, Raja
- Raoul
- Raoul Dufy
- Raoul Island
- Raoul Salan
- Raoul Wallenberg
- Raoul Walsh
- Raoult, Francois
- Raoult\'s law
- Rap
- Rapacki, Adam
- Rapallo
- Rapamycin
- Rape
- Raphael
- Raphael, Frederic
- Raphael Holinshed
- Raphael Sanzio
- Raphia
- Rapid reaction force
- Rapp, George
- Rapport
- Raqqa
- Raquel Welch
- Rare Breeds Survival Trust
- Rare gas
- Rarefaction
- Rarotonga, Treaty
- Ras Tafari Haile Selassie
- Ras shamra
- Rash
- Rashi
- Rashomon
- Rashomon (cinema)
- Rask, Rasmus
- Rask, city
- Raskolnikov
- Rasmus Rask
- Rasmussen, Knud
- Rasmussen, Poul
- Rasputin, Grigory Yefimovich
- Rassam, Hormuzd
- Rastafarians
- Rastatt
- Rastatt, Treaty of
- Raster Graphics
- Rastrelli, Bartolomeo Francessco
- Rat
- Rat-tail
- Rata
- Ratak
- Rate of change
- Rate of reaction
- Ratemeter
- Rath
- Rathbone, Basil
- Rathenau, Walther
- Rathenow
- Rathlin
- Ratio
- Rational number
- Rationalism
- Rationalized units