V
- Vacancy defectCrystallographic defect; an atom missing from a lattice site
- VacuumSpace that is empty of matter
- Vacuum chamberEnclosure with very low air pressure used for experiments and testing
- Vacuum energyBackground energy existing in space
- Vacuum expectation valueType of operator expectation value
- Vacuum flangeA vacuum flange is a flange at the end of a tube used to connect vacuum chambers, tubing a
- Vacuum permeabilityPhysical constant
- Vacuum permittivityAbsolute dielectric permittivity of free space
- Vaidya metricExact spherically symmetric solution in GR
- Valence and conduction bandsElectron energy bands which determine the electrical conductivity of a material
- Valley of stabilityCharacterization of nuclide stability
- Van de Graaff generatorElectrostatic generator operating on the triboelectric effect
- Van der Waals equationGas equation of state which accounts for non-ideal gas behavior
- Van Stockum dustExact solution of the Einstein field equations
- VaporSubstances in the gas phase at a temperature lower than its critical point
- Vapor qualityMass fraction of a saturated mixture which is vapor
- Vapor–liquid equilibriumIn thermodynamics and chemical engineering, the vapor–liquid equilibrium (VLE) describes t
- VaporizationTransition of a liquid to vapor
- Variational method (quantum mechanics)Approximating method in quantum mechanics
- Variational principleScientific principles enabling the use of the calculus of variations
- Variety (cybernetics)Number of states of a cybernetic system
- Vector mesonIn high energy physics, a vector meson is a meson with total spin 1 and odd parity (usuall
- Vector potentialMathematical concept in vector calculus
- Vector quantityPhysical quantity that is a vector
- VelocitySpeed and direction of a motion
- Venetian glassGlassmaking tradition from Venice, Italy
- Venturi effectReduced pressure caused by a flow restriction in a tube or pipe
- Vergence (optics)Angle between converging or diverging light rays
- VermilionRed color from powdered cinnabar (HgS)
- Verneuil methodManufacturing process of synthetic gemstones
- Vernon Ellis CosslettBritish physicist
- Vertex operator algebraAlgebra used in 2D conformal field theories and string theory
- Vertical pressure variationVariation in pressure as a function of elevation
- VibrationMechanical oscillations about an equilibrium point
- Vibronic couplingVibronic coupling (also called nonadiabatic coupling or derivative coupling) in a molecule
- Victor EmeryBritish physicist (1934–2002)
- Victoria and Albert MuseumArt museum in London, England
- Vincent CourtillotFrench geophysicist holding climate-skeptical positions
- Violet (color)Color between indigo and ultraviolet on the electromagnetic spectrum
- Virial expansionSeries expansion of the equation of state for a many-particle system
- Virial theoremPhysics theorem
- ViridianShade of bluish green
- Virtual imageCollection of focus points made by extended diverging light rays
- Virtual particleTransient quantum fluctuation (physics)
- Virtual stateA short-lived, unobservable quantum state
- Virtual workWork done by a force to move a particle along a virtual displacement
- Vis vivaHistorical concept in physics
- ViscoelasticityProperty of materials with both viscous and elastic characteristics under deformation
- ViscosityResistance of a fluid to shear deformation
- Visible spectrumPortion of the electromagnetic spectrum that is visible to the human eye
- Vitaly EfimovSoviet physicist
- Vitreous enamelMaterial made by fusing powdered glass to a substrate by firing
- VitrificationTransformation of a substance into a glass
- Vladimir GribovVladimir Naumovich Gribov (Russian Влади́мир Нау́мович Гри́бов; March 25, 1930 – August 13
- Vladimir Jurko GlaserVladimir Jurko Glaser (21 April 1924 – 22 January 1984) was a Croatian theoretical physici
- Vlasov equationDescription of the time-evolution of plasma
- VoltageDifference in electric potential between two points in space
- VoltmeterInstrument used for measuring voltage
- Volume (thermodynamics)Extensive parameter used to describe a thermodynamic system's state
- Volume elementIn mathematics, a volume element provides a means for integrating a function with respect
- Volumetric flow rateVolume of fluid which passes per unit time
- Volumetric heat capacityThermal quality
- Vortex sheddingIn fluid dynamics, vortex shedding is an oscillating flow that takes place when a fluid su
- VorticityPseudovector field describing the local rotation of a continuum near some point
- VycorTrademark for a type of glass