Index of physics articles (U)

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.

U

 * U-duality
 * U.S. Standard Atmosphere
 * UA1 experiment
 * UA2 experiment
 * UC Santa Barbara Physics Department
 * UK Dark Matter Collaboration
 * UMER
 * UMIST linear system
 * UNIT OF REFRIGERATION
 * UPTI Affair
 * USAF Stability and Control DATCOM
 * UV completion
 * UV fixed point
 * Über die von der molekularkinetischen Theorie der Wärme geforderte Bewegung von in ruhenden Flüssigkeiten suspendierten Teilchen
 * Über quantentheoretische Umdeutung kinematischer und mechanischer Beziehungen
 * Udipi Ramachandra Rao
 * Ugo Fano
 * Ukichiro Nakaya
 * Ulf Leonhardt
 * Ultimate fate of the universe
 * Ultra-high-energy cosmic ray
 * Ultra-low frequency
 * Ultra high frequency
 * Ultrafast x-rays
 * Ultrahigh energy gamma-ray
 * Ultralight trike
 * Ultraluminous X-ray source
 * Ultramicroscope
 * Ultrarelativistic limit
 * Ultrashort pulse
 * Ultrasoft radiation
 * Ultrasonic flow meter
 * Ultrasonic foil (papermaking)
 * Ultrasonic force microscopy
 * Ultrasonic hearing
 * Ultrasonic horn
 * Ultrasonic nozzle
 * Ultrasonic sensor
 * Ultrasonic testing
 * Ultrasonic welding
 * Ultrasonics
 * Ultrasound
 * Ultrasound-enhanced systemic thrombolysis
 * Ultrasound attenuation spectroscopy
 * Ultraviolet
 * Ultraviolet catastrophe
 * Ultraviolet divergence
 * Umklapp scattering
 * Unbiennium
 * Uncertainty
 * Uncertainty principle
 * Unconventional wind turbines
 * Undercompressive shock wave
 * Understanding Physics
 * Undertow (wave action)
 * Underwater acoustic communication
 * Underwater acoustic positioning system
 * Underwater acoustics
 * Underwater telephone
 * Undulation of the geoid
 * Undulator
 * Undulatory theory of light
 * Unequal rotor lift distribution
 * Uniaxial crystal
 * Unified field theory
 * Uniform acceleration
 * Uniform circular motion
 * Uniform motion
 * Uniform theory of diffraction
 * Uniqueness theorem for Poisson's equation
 * Unit commensurability
 * Unit of length
 * Unitarity (physics)
 * Unitarity bound
 * Unitarity gauge
 * Unitary Plan Wind Tunnel
 * United States Air Force Stability and Control Digital DATCOM
 * United States Invitational Young Physicists Tournament
 * United States National Physics Olympiad
 * United States gravity control propulsion research
 * Units of measurement
 * Universal conductance fluctuations
 * Universal extra dimension
 * Universal force field
 * Universal linear accelerator
 * Universal quantum simulator
 * Universal wavefunction
 * Universality (dynamical systems)
 * Universe
 * Unparticle physics
 * Unrestricted Hartree–Fock
 * Unruh effect
 * Unruh temperature
 * Unsepttrium
 * Unsolved problems in astronomy
 * Untriseptium
 * Up quark
 * Upper-atmospheric lightning
 * Upper-convected Maxwell model
 * Upper-convected time derivative
 * Upper critical solution temperature
 * Upper hybrid oscillation
 * Upper tangent arc
 * Upsilon meson
 * Upward continuation
 * Upward looking sonar
 * Upwind scheme
 * Uranium
 * Uranium boride
 * Uranium carbide
 * Uranium dioxide
 * Uranium hydride bomb
 * Uranium in the environment
 * Uranium pentafluoride
 * Uranium tetrachloride
 * Uranium tetrafluoride
 * Uranyl carbonate
 * Uranyl nitrate
 * Uranyl peroxide
 * Urca process
 * Uriel Frisch
 * Ursell number
 * Ursula Franklin
 * Uspekhi Fizicheskikh Nauk
 * Ussing chamber
 * Uzi Landman