R-process
R-symmetry
Rabi cycle
Rabi frequency
Racah, Giulio (Yoel)
Radiation damping
Radiation effect
Radiation flux
Radiation length
Radiation pressure
Radiation trapping
Radiative Auger effect
Radio Ice Cerenkov Experiment
Radio noise source
Radio occultation
Radio window
Radioactive decay, Radioactivity
Radio-frequency induction
Radioisotope piezoelectric generator
Radionuclide
Radiophysics
Radium
Radon
Rainwater, Leo James
Raman, Chandrasekhara Venkata
Raman laser
Raman Research Institute
Ramsauer–Townsend effect
Ramsey, Norman Foster
Randall–Sundrum model
Random energy model
Random Matrix Theory in Physics
Random Partitions
Random Walks in Random Environments
Rankine cycle
Rapoport, Lev Pavlovich
Rare Isotope Accelerator
Rate of heat flow
Ray tracing (physics)
Ray transfer matrix analysis
Rayleigh, John Strutt, 3rd Baron
Rayleigh dissipation function
Rayleigh Medal
Reactor Experiment for Neutrino Oscillation
Real gas
Recycling antimatter
Refraction
Refraction (sound)
Regge calculus
Regge theory
Rehbinder effect
Reissner–Nordström metric
Relative angular momentum
Relative viscosity
Relativistic Doppler effect
Renninger negative-result experiment
Reports on Progress in Physics
Resonator
Reviews of Modern Physics
Reynolds, Osborne
Rhenium
Rheonomous
Rhodium
Rho meson
Richardson, Robert Coleman
Richter, Burton
Riemann–Silberstein vector
Riemannian Penrose inequality
Ring laser
Rocard, Yves
Roentgenium
Röntgen, Wilhelm Conrad
Roothaan equations
Rosen, Nathan
Rotation around a fixed axis
Rotational energy
Rotational transition
Rovelli, Carlo
Rp-process
Rubbia, Carlo
Rubidium
Ruby laser
Ruska, Ernst August Friedrich
Ruthenium
Rutherford, Ernest
Rutherford scattering
Rutherfordium
Rydberg, Johannes Robert
Physics Encyclopedia