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- T-dualityEquivalence of two physical theories
- T-symmetryTime reversal symmetry in physics
- Table of thermodynamic equationsCommon thermodynamic equations and quantities in thermodynamics, using mathematical notati
- TachyonHypothetical faster-than-light particle
- Tadeusz BanachiewiczPolish astronomer, mathematician and geodesist
- Tamiaki YoneyaJapanese string theorist
- Tan (color)Pale tone of brown
- Tang AoqingTang Aoqing (Chinese: 唐敖庆; Wade–Giles: T'ang Ao-ch'ing; 18 November 1915 – 15 July 2008),
- Tangential and normal componentsIn mathematics, given a vector at a point on a curve, that vector can be decomposed unique
- Tangential speedHow quickly an object undergoes movement in a circular path
- Tanjore Ramachandra AnantharamanIndian metallurgist and materials scientist (1927–2009)
- TauNineteenth letter in the Greek alphabet
- Tau (particle)Elementary subatomic particle with negative electric charge
- Tau neutrinoSubatomic particle
- Taub–NUT spaceExact solution to Einstein's equations
- TealGreenish-blue color
- Teinopalpus imperialisTeinopalpus imperialis, the Kaisar-i-Hind, is a rare species of swallowtail butterfly foun
- TektiteGravel-sized glass beads formed from meteorite impacts
- TemperaturePhysical quantity of hot and cold
- Temperature gradientTemperature difference per unit of length
- Temperature measurementRecording of temperature
- Tension (physics)Pulling force transmitted axially
- Tensor derivative (continuum mechanics)The derivatives of scalars, vectors, and second-order tensors with respect to second-order
- Tensor fieldAssignment of a tensor continuously varying across a region of space
- Tensor product of fieldsIn mathematics, the tensor product of two fields is their tensor product as algebras over
- Tensor–vector–scalar gravityTensor–vector–scalar gravity (TeVeS), developed by Jacob Bekenstein in 2004, is a relativi
- Terahertz metamaterialA terahertz metamaterial is a class of composite metamaterials designed to interact at ter
- Terahertz nondestructive evaluationTerahertz nondestructive evaluation pertains to devices, and techniques of analysis occurr
- Terahertz radiationRange 300-3000 GHz of the electromagnetic spectrum
- Terminal velocityHighest velocity attainable by a falling object
- Ternary fissionNuclear fission yielding three products
- Tesla coilElectrical resonant transformer circuit invented by Nikola Tesla
- Test particleIn physical theories, a test particle, or test charge, is an idealized model of an object
- Tests of general relativityTests of general relativity serve to establish observational evidence for the theory of ge
- Tests of special relativitySpecial relativity is a physical theory that plays a fundamental role in the description o
- Tetragonal crystal systemLattice point group
- TetraquarkExotic meson composed of four valence quarks
- Teukolsky EquationDescription of perturbed Kerr black holes
- TevatronDefunct American particle accelerator at Fermilab in Illinois (1983–2011)
- The Astrophysical JournalAcademic journal founded in 1895
- The Character of Physical LawThe Character of Physical Law is a series of seven lectures by physicist Richard Feynman c
- The Five Ages of the UniverseBook by Fred Adams
- The Hidden RealityThe Hidden Reality: Parallel Universes and the Deep Laws of the Cosmos is a book by Brian
- Theodor KaluzaGerman mathematician and physicist
- Theorem of three momentsIn civil engineering and structural analysis Clapeyron's theorem of three moments (by Émil
- Theoretical physicsBranch of physics
- Theory of everythingHypothetical physical concept
- Theory of relativityTwo interrelated physics theories by Albert Einstein
- Thermal conductionProcess by which heat is transferred within an object
- Thermal conductivity and resistivityCapacity of a material to conduct heat
- Thermal energyEnergy that is measured by temperature
- Thermal equilibriumState of no net thermal energy flow between two connected systems
- Thermal expansionTendency of matter to change volume in response to a change in temperature
- Thermal fluctuationsRandom temperature-influenced deviations of particles from their average state
- Thermal insulationMinimization of heat transfer
- Thermal massUse of thermal energy storage in building design
- Thermal physicsBranch of physics
- Thermal pressureIn thermodynamics, thermal pressure (also known as the thermal pressure coefficient) is a
- Thermal quantum field theoryIn theoretical physics, thermal quantum field theory (thermal field theory for short) or f
- Thermal radiationElectromagnetic radiation generated by the thermal motion of particles
- Thermal shockLoad caused by rapid temperature change
- Thermionic converterA thermionic converter consists of a hot electrode which thermionically emits electrons ov
- Thermionic emissionThermally induced flow of charge carriers from a surface
- Thermodynamic cycleLinked cyclic series of thermodynamic processes
- Thermodynamic databases for pure substancesThermodynamic properties list
- Thermodynamic diagramsDiagram showing the thermodynamic states of a material
- Thermodynamic equationsEquations in thermodynamics
- Thermodynamic equilibriumState of thermodynamic systems where no net flow of matter or energy occurs
- Thermodynamic free energyState function whose change relates to the system's maximal work output
- Thermodynamic instrumentsDevice for measuring thermodynamic properties
- Thermodynamic limitLimit of a constant-density system of particles as its volume increases
- Thermodynamic operationA thermodynamic operation is an externally imposed manipulation that affects a thermodynam
- Thermodynamic potentialScalar physical quantities representing system states
- Thermodynamic processPassage of a system from an initial to a final state of thermodynamic equilibrium
- Thermodynamic stateQuantifiable conditions of a thermodynamic system at a specific time
- Thermodynamic systemBody of matter in a state of internal equilibrium
- Thermodynamic temperatureMeasure of temperature relative to absolute zero
- ThermodynamicsPhysics of heat, work, and temperature
- Thermodynamics and an Introduction to ThermostatisticsThermodynamics and an Introduction to Thermostatistics is a textbook written by Herbert Ca
- Thermoelectric effectDirect conversion of temperature differences to electric voltage and vice versa
- ThermographyInfrared imaging used to reveal temperature
- Theta vacuumIn quantum field theory, the theta vacuum is the semi-classical vacuum state of non-abelia
- Third law of thermodynamicsLaw of physics
- ThixotropyChange in viscosity of a gel or fluid caused by stress
- Thomas EbbesenFranco-Norwegian physical chemist and professor (born 1954)
- Thomas JenneweinThomas Jennewein is an Austrian physicist who conducts research in quantum communication a
- Thomas precessionRelativistic correction
- Thomas–Fermi screeningThomas–Fermi screening is a theoretical approach to calculate the effects of electric fiel
- Thomson scatteringLow energy photon scattering off charged particles
- Thorium-based nuclear powerNuclear energy extracted from thorium isotopes
- Threshold displacement energyIn materials science, the threshold displacement energy (Td) is the minimum kinetic energy
- Tidal forceGravitational effect also known as the differential force and the perturbing force
- Tiffany glassGlass developed by Tiffany Studios in New York City
- Timber roof trussA timber roof truss is a structural framework of timbers designed to bridge the space abov
- TimeContinuous progression from past to future
- Time crystalStructure that repeats in time; a novel type or phase of non-equilibrium matter
- Time dilationMeasured time difference as explained by relativity theory
- Time in physicsFundamental quantity in physics
- Time reversibilityType of physical or mathematical property
- Time-dependent density functional theoryQuantum-mechanical framework for simulating molecules and solids
- Time-invariant systemDynamical system whose system function is not directly dependent on time
- Timeline of chemical element discoveriesList of history of chemical elements
- Timeline of discovery of Solar System planets and their moonsThе history of discovering planets and moons
- Timeline of fundamental physics discoveriesThis timeline lists significant discoveries in physics and the laws of nature, including e
- Tin-glazingCeramic glazing process
- Tint, shade and toneMixture of a color with white or black
- Tohru EguchiJapanese theoretical physicist (1948–2019)
- Tokamak Fusion Test ReactorThe Tokamak Fusion Test Reactor (TFTR) was an experimental tokamak built at Princeton Plas
- Tom Banks (physicist)American physicist
- Top quarkType of quark
- Topological degeneracyIn quantum many-body physics, topological degeneracy is a phenomenon in which the ground s
- Topological insulatorState of matter with insulating bulk but conductive boundary
- Topological orderType of order at absolute zero
- TorqueTurning force around an axis
- Torsion (mechanics)Twisting of an object due to an applied torque
- Torsion constantThe torsion constant or torsion coefficient is a geometrical property of a bar's cross-sec
- Toshiki TajimaJapanese physicist
- Total internal reflectionComplete reflection of a wave
- ToughnessMaterial ability to absorb energy and plastically deform without fracturing
- Trailing zeroZero after the final non-zero digit of a number
- TrajectoryPath of a moving object
- Transactional interpretationInterpretation of quantum mechanics
- Transfer functions in imagingImages and videos use specific transfer functions to describe the relationship between ele
- Transformation opticsBranch of optics which studies how EM radiation can be manipulated with metamaterials
- TransformersJapanese–American media franchise
- Translational symmetryInvariance of operations under geometric translation
- Transmission coefficientConcept in physics and chemistry
- Transmission loss (duct acoustics)Transmission loss (TL) in duct acoustics describes the acoustic performances of a muffler-
- Transmission mediumConduit for signal propagation
- TransmittanceEffectiveness of a material in transmitting radiant energy
- Transparency and translucencyPhysical property of allowing light
- Transport phenomenaExchange of mass, energy, and momentum between observed and studied systems
- Transport Phenomena (book)Transport Phenomena is the first textbook about transport phenomena. It is specifically de
- Transverse modeElectromagnetic wave with oscillations perpendicular to the direction of travel
- Transverse waveMoving wave that has oscillations perpendicular to the direction of the wave
- Trapped-ion quantum computerProposed quantum computer implementation
- Triangle waveNon-sinusoidal waveform
- Triboelectric effectCharge transfer due to contact or sliding
- TribologyScience of rubbing surfaces
- Triclinic crystal systemOne of the seven crystal systems
- TriengenTriengen is a municipality in the district of Sursee in the canton of Lucerne in Switzerla
- Triple pointThermodynamic point where three matter phases exist
- Troy Carter (physicist)American plasma physicist
- True muoniumPredicted exotic atom
- Tsunami warning systemSystem used to detect and warn the public about impending tsunamis
- Tunable metamaterialA tunable metamaterial is a metamaterial with a variable response to an incident electroma
- Tuning forkDevice that generates sounds of constant pitch when struck
- Tunnel ionizationIn physics, tunnel ionization is a process in which electrons in an atom (or a molecule) t
- TurbulenceMotion characterized by chaotic changes in pressure and flow velocity
- Turquoise (color)Greenish-blue color
- Twenty-Five-Foot Space SimulatorThe Twenty-Five-Foot Space Simulator is a chamber for testing spacecraft in space-like con
- Twin paradoxThought experiment in special relativity
- Two-body problemMotion problem in classical mechanics
- Two-body problem in general relativityThe two-body problem in general relativity (or relativistic two-body problem) is the deter
- Two-dimensional flowIn fluid mechanics, a two-dimensional flow is a form of fluid flow where the flow velocity
- Two-state vector formalismThe two-state vector formalism (TSVF) is a description of quantum mechanics in terms of a
- Type I string theoryAspect of theoretical physics
- Type II string theoryAspect of theoretical physics
- Type-I superconductorType of superconductor with a single critical magnetic field
- Type-II superconductorMaterial that can form magnetic vortices
- Tyrian purpleNatural dye extracted from Murex sea snails
