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- F-1 (nuclear reactor)The F-1 (from "First Physical Reactor") is a research reactor operated by the Kurchatov In
- F-theoryIn theoretical physics, F-theory is a branch of string theory developed by Iranian-America
- F. J. DuarteLaser physicist and author/editor
- Faber BirrenFaber Birren (11 September 1900 – 30 December 1988) was an American writer and consultant
- Factorization algebraIn mathematics and mathematical physics, a factorization algebra is an algebraic structure
- False colorMethods of visualizing information by translating to colors
- False vacuumHypothetical vacuum, less stable than true vacuum
- Family symmetriesIn particle physics, the family symmetries or horizontal symmetries are various discrete,
- Fanning friction factorThe Fanning friction factor (named after American engineer John T. Fanning) is a dimension
- Far infraredLight with 15-1000 μm wavelength
- Faraday constantPhysical constant: Electric charge of one mole of electrons
- Faraday effectPhysical magneto-optical phenomenon
- Faraday rotatorA Faraday rotator is a polarization rotator based on the Faraday effect, a magneto-optic e
- Faraday's law of inductionBasic law of electromagnetism
- FärjestadenFärjestaden is a locality situated in Mörbylånga Municipality, Kalmar County, Sweden with
- Farrington DanielsAmerican physical chemist (1889–1972)
- Faster-than-lightPropagation of information or matter faster than the speed of light
- Fatigue (material)Initiation and propagation of cracks in a material due to cyclic loading
- Fawn (colour)Fawn is a light yellowish tan colour. It is usually used in reference to clothing, soft fu
- Felix EhrenhaftAustrian physicist (1879-1952)
- Félix SavartFrench physicist
- FemtometreUnit of length
- Ferenc KrauszHungarian physicist (born 1962)
- Fermat's principleLight rays follow quickest paths
- Fermi energyHighest particle energy in a Fermi gas at absolute zero
- Fermi gasPhysical model of non-interacting fermions
- Fermi levelQuantity in solid state thermodynamics
- Fermi National Accelerator LaboratoryHigh-energy particle physics laboratory in Illinois, US
- Fermi surfaceAbstract boundary in condensed matter physics
- Fermi–Dirac statisticsStatistical description for the behavior of fermions
- Fermi's golden ruleTransition rate formula
- Fermilab E-906/SeaQuestFermilab E-906/SeaQuest is a particle physics experiment which will use Drell–Yan process
- FermionType of subatomic particle
- Fermionic condensateState of matter
- FerrimagnetismType of magnetic phenomenon
- FerroelectricityProperty of materials which both possess and are affected by electric fields
- FerrofluidLiquid that is attracted by poles of a magnet
- Ferromagnetic resonanceFerromagnetic resonance, or FMR, is coupling between an electromagnetic wave and the magne
- FerromagnetismMechanism by which materials form into and are attracted to magnets
- Feshbach resonanceIn physics, a Feshbach resonance can occur upon collision of two slow atoms, when they tem
- Feynman diagramPictorial representation of the behavior of subatomic particles
- Fiber-optic cableCable assembly containing one or more optical fibers that are used to carry light
- FiberscopeFlexible optical fiber bundle with an eyepiece on one end and a lens on the other
- Fick's laws of diffusionMathematical descriptions of molecular diffusion
- Fictitious forceFrame-dependent apparent force in Physics
- Field (physics)Physical quantities taking values at each point in space and time
- Field equationIn theoretical physics and applied mathematics, a field equation is a partial differential
- Fifth forceSpeculative physics theory
- Fine structureDetails in the emission spectrum of an atom
- Fine-structure constantDimensionless number that quantifies the strength of the electromagnetic interaction
- Finite potential wellQuantum mechanics concept
- Finite strain theoryMathematical model for describing material deformation under stress
- First law of thermodynamicsLaw of thermodynamics establishing the conservation of energy
- Fisheries acousticsFisheries acoustics includes a range of research and practical application topics using ac
- Flag of VietnamThe national flag of the Socialist Republic of Vietnam (Vietnamese: Quốc kỳ nước Cộng hoà
- FlameoutIn aviation, a flameout (or flame-out) is the run-down of a jet engine or other turbine en
- Flavour (particle physics)Species of elementary particle
- Flexural strengthFlexural strength, also known as modulus of rupture, or bend strength, or transverse ruptu
- Flicker noiseFlicker noise is a type of electronic noise with a 1/f power spectral density. It is there
- FlightMovement of an object through air
- Florida AvenueFlorida Avenue is a major street in Washington, D.C. It was originally named Boundary Stre
- Flow measurementQuantification of bulk fluid movement
- Flow separationIn fluid dynamics, flow separation or boundary layer separation is the detachment of a bou
- Flow velocityVector field which is used to mathematically describe the motion of a continuum
- Flow visualizationVisualization technique in fluid dynamics
- Fluctuation theoremTheorem in statistical mathematics
- Fluctuation–dissipation theoremStatistical physics theorem
- FluidLiquid, gas, or other continuously deforming and flowing material
- Fluid dynamicsAspects of fluid mechanics involving fluid flow
- Fluid mechanicsBranch of physics
- FluorescenceEmission of light by a substance that has absorbed light
- FluxMathematical concept applicable to physics
- Flux methodCrystal growth method
- Focal lengthMeasure of how strongly an optical system converges or diverges light
- Focus (optics)Point at which light rays converge
- ForceInfluence that can change motion of an object
- Force carrierIn quantum physics, type of particle that gives rise to forces between other particles
- Force densityIn fluid mechanics, the force density is the negative gradient of pressure. It has the phy
- Force field (physics)Region of space in which a force acts
- Forest glassType of glass produced in medieval Europe
- Formulations of special relativityThe theory of special relativity was initially developed in 1905 by Albert Einstein. Howev
- Foucault's measurements of the speed of lightScientific instrument used to measure the speed of light
- FoulingAccumulation of unwanted material on solid surfaces
- Four-current4D analogue of electric current density
- Four-momentum4D relativistic energy and momentum
- Four-tensorIn physics, specifically for special relativity and general relativity, a four-tensor is a
- Four-vectorVector in relativity
- Fourcault processMethod of manufacturing flat glass
- Fourier opticsStudy of classical optics using Fourier transforms
- Fourth powerResult of multiplying four instances of a number together
- Fractal NoiseFractal Noise is a 2023 science fiction novel written by American author Christopher Paoli
- Fracture mechanicsStudy of propagation of cracks in materials
- Fracture toughnessStress intensity factor at which a crack's propagation increases drastically
- Frame of referenceAbstract coordinate system
- Frame-draggingEffect of general relativity
- Francis BrethertonAmerican mathematician, oceanographer and engineer (1935–2021)
- Francis E. LowFrancis Eugene Low (October 27, 1921 – February 16, 2007) was an American theoretical phys
- Francis F. ChenAmerican plasma physicist
- Francis J. BradleyAmerican health physicist (1926–2021)
- Franck–Hertz experiment1914 confirmation of the atom's quantum nature
- Frank CloseParticle physicist
- Frank H. FieldFrank Henry Field (February 27, 1922 – April 12, 2013) was an American chemist and mass sp
- Frank-Kamenetskii theoryIn combustion, Frank-Kamenetskii theory explains the thermal explosion of a homogeneous mi
- Franklin InstituteScience museum in Philadelphia, Pennsylvania
- Franz MeldeFranz Emil Melde (March 11, 1832 in Großenlüder near Fulda – March 17, 1901 in Marburg) wa
- Fraunhofer diffractionFar-field diffraction
- Freddy CachazoVenezuelan-born theoretical physicist
- Frederick Sumner BrackettAmerican physicist (1896–1988)
- Free body diagramDiagram showing applied forces and moments on a physical body
- Free electron modelModel of electrons within a metallic solid
- Free entropyThermodynamic potential of entropy, analogous to the free energy
- Free fallMotion of a body subject only to gravity
- Free neutron decayDecay of a neutron when outside a nucleus
- Free particleParticle that is not bound by an external force
- Free surfaceSurface of a fluid that is subject to zero parallel shear stress
- Free surface effectEffect of liquids in slack tanks
- FreezingPhase transition of liquid to solid
- FrequencyNumber of occurrences or cycles per unit time
- Fresnel diffractionIn optics, the Fresnel diffraction equation for near-field diffraction is an approximation
- Fresnel equationsEquations of light transmission and reflection
- FrictionForce resisting sliding motion
- Frictional contact mechanicsStudy of the deformation of bodies in the presence of frictional effects
- Friedmann equationsEquations in physical cosmology
- Friedrich Ernst DornGerman physicist and first to discover radon
- Friedrich KottlerFriedrich Kottler (December 10, 1886 – May 11, 1965) was an Austrian theoretical physicist
- Friedrich WagnerGerman physicist and emeritus professor (born 1943)
- Fritz CohnGerman astronomer (1866–1922)
- Fritz RohrlichFritz Rohrlich (May 12, 1921 – November 14, 2018) was an American theoretical physicist an
- Fuchsia (color)Color
- Functional integrationIntegration over the space of functions
- Fundamental interactionMost basic type of physical force
- Fundamental thermodynamic relationEquations on thermodynamic quantities
- Fusa MiyakeJapanese physicist
