The index of physics articles is split into multiple pages due to its size.
To navigate by individual letter use the table of contents below.
R
R-factor (crystallography) R-hadron R-parity R-process R-symmetry R. A. Stradling R. Orin Cornett R. S. Krishnan R. Stanley Williams R. Stephen Berry R136a1 R1 (nuclear reactor) R4 nuclear reactor RA-1 Enrico Fermi RC time constant RF antenna ion source RHEED-TRAXS RKKY interaction RNS formalism ROI PAC ROOT RRKM theory RT (energy) RX J0806.3+1527 R (cross section ratio) RaLa Experiment Rabbit (nuclear engineering) Rabi cycle Rabi frequency Rabi problem Radial distribution function Radial motion Radial polarization Radial velocity Radian per second Radian per second squared Radiance Radiant barrier Radiant energy Radiant flux Radiant intensity Radiation Radiation-dominated era Radiation chemistry Radiation damping Radiation flux Radiation hormesis Radiation impedance Radiation implosion Radiation intelligence Radiation length Radiation material science Radiation monitoring Radiation pressure Radiation protection Radiation scattering Radiation stress Radiation trapping Radiational cooling Radiative cooling Radiative equilibrium Radiative heat transfer Radiative process Radiative transfer Radio-frequency induction Radio-frequency quadrupole Radio Ice Cerenkov Experiment Radio astronomy Radio frequency Radio galaxy Radio noise source Radio occultation Radio spectrum pollution Radio waves Radio window Radioactive Substances Act 1993 Radioactive decay Radioactive displacement law of Fajans and Soddy Radioactive waste Radioanalytical chemistry Radiobiology Radiochemistry Radiodensity Radiogenic nuclide Radiographic equipment Radiography Radiohalo Radioisotope piezoelectric generator Radioisotope thermoelectric generator Radioluminescence Radiometer Radiometric dating Radiometry Radion (physics) Radiophysics Radioscope Radiosity (heat transfer) Radium and radon in the environment Radius of curvature (optics) Radius of gyration Rafael Bruschweiler Rafael Ghazaryan Rafael Sorkin Rahul Mahajan (blogger) Rainbow Rainbow hologram Rainer Blatt Rainout (radioactivity) Raja Ramanna Rajaram Nityananda Rajesh Gopakumar Rajnath Singh Ralph A. Sawyer Ralph Asher Alpher Ralph H. Fowler Ralph Kronig Ralph Lapp Ralph Pudritz Ralph von Frese Ram pressure Rama Bansil Ramamurti Shankar Raman Prinja Raman Sundrum Raman laser Raman microscope Raman scattering Ramanuja Vijayaraghavan Rammal Rammal Ramond sector Ramond–Ramond field Ramsauer–Townsend effect Randall J. LeVeque Randall–Sundrum model Random close pack Random energy model Random laser Random matrix Random phase approximation Range (particle radiation) Rangefinder Rankine cycle Rankine vortex Rankine–Hugoniot conditions Raoul Franklin Raoul Pictet Raoult's law Raphael Tsu Rapid phase transition Rapid single flux quantum Rapidity Rare-earth magnet Rare Earth hypothesis Rare Isotope Accelerator Rare Symmetry Violating Processes Rarefaction Rarita-Schwinger action Rarita–Schwinger equation Rashba effect Rashid Sunyaev Rate of heat flow Rational conformal field theory Raul Rabadan Ravi Grover Ray (optics) Ray Kidder Ray Mackintosh Ray Streater Ray tracing (physics) Ray transfer matrix analysis Raychaudhuri equation Rayleigh distance Rayleigh flow Rayleigh law Rayleigh number Rayleigh scattering Rayleigh–Bénard convection Rayleigh–Gans approximation Rayleigh–Jeans law Rayleigh–Plesset equation Rayleigh–Taylor instability Raymond Chiao Raymond Davis, Jr. Raymond Gosling Raymond Herb Raymond Hide Raymond Jeanloz Raymond L.