Navigator
Physics: Glossary
- 100 Years of General Relativity
- 22 Questions About Time and Timekeeping Answered
- 6 Amazing Facts About Gravitational Waves and LIGO
- aberration
- absolute temperature scale
- absolute zero
- absorption
- absorption edge
- acceleration
- acoustic impedance
- acoustic microscope
- acoustics
- acoustics, architectural
- actinium series
- action
- activity
- activity coefficient
- adiabatic demagnetization
- adsorption
- aerodynamics
- aerosol
- albedo
- alembic
- alpha decay
- alpha particle
- alternating current
- altitude and azimuth
- amorphous solid
- Ampère’s law
- amphoterism
- amplitude
- anachronism (page not yet available)
- angle of incidence (page not yet available)
- angular momentum (page not yet available)
- angular velocity (page not yet available)
- anisotropy (page not yet available)
- annihilation (page not yet available)
- anthropic principle
- antiferromagnetism (page not yet available)
- antimatter (page not yet available)
- antineutron
- antiparticle
- antiproton
- aperture
- aphelion
- apse
- Archimedes’ principle
- Are Black and White Colors?
- assaying
- astrophysics
- atmospheric corona
- atmospheric electricity
- atmospheric optics
- atmospheric pressure
- atmospheric refraction
- atmospheric turbulence
- atom
- atomic bomb
- Atomic Bombing of Hiroshima: Infographic
- Atomic Bombing of Nagasaki: Infographic
- atomic clock
- atomic mass
- atomic mass unit
- atomic model
- atomic number
- atomic physics
- atomic radius
- atomic theory
- atomic time
- atomic weight
- atomism
- Aufbau principle
- Auger effect
- aureole
- austausch coefficient
- avalanche effect
- Avogadro’s law
- Avogadro’s number
- axis
- azeotrope
- ballistics
- band gap
- band theory
- Barkhausen effect
- barn
- baryon
- BCS theory
- beat
- Beer’s law
- Bernoulli’s theorem
- beta decay
- beta particle
- binding energy
- binocular
- bioelectricity
- biofuel
- biogas
- bioluminescence
- biophysics
- Biot-Savart law
- black
- blackbody (page not yet available)
- blackbody radiation (page not yet available)
- blue
- blue light (page not yet available)
- Bohr magneton
- Bohr model
- boiling point (page not yet available)
- Boltzmann constant
- Bose-Einstein condensate
- Bose-Einstein statistics
- boson
- boundary layer
- bow wave
- Boyle’s law
- Bragg law
- branching
- brane
- Bravais lattice
- bremsstrahlung
- Brewster’s law
- brightness
- British thermal unit
- broadband
- Brocken spectre
- brown
- Brownian motion
- bubble chamber
- buckling
- bulk modulus
- buoyancy
- burette
- butterfly effect
- caloric theory
- Can Anything Break if You Hit It Hard Enough?
- canonical ensemble
- capacitance
- capillarity
- capillary wave
- capture
- carbonation
- carrier wave
- Casimir effect
- catenation (page not yet available)
- cathode ray (page not yet available)
- Cavendish experiment (page not yet available)
- cavitation (page not yet available)
- celestial mechanics
- Cellini’s halo (page not yet available)
- Celsius (page not yet available)
- centrifugal force
- centripetal acceleration
- channeling
- charge conjugation
- charge conservation
- Charles’s law
- chemical energy
- chemical indicator
- chemical precipitation
- chemiluminescence
- Cherenkov radiation
- chromatic aberration
- chromatography
- chromophore
- circuit breaker
- cloud chamber
- cluster
- CNO cycle
- coal liquefaction
- coefficient of friction
- coherence
- cohesion
- coincidence counting
- collective model
- colligative property
- collimator
- collision
- colloid
- colorimetry
- colour
- colour centre
- colour wheel
- column chromatography
- combination tone
- complementarity principle
- complementary colour
- complexity
- compound-nucleus model
- compression
- Compton effect
- Condensation
- condensed-matter physics
- conductivity
- conjugated system
- conservation law
- conservation of energy
- conservation of linear momentum
- conservation of mass
- conservation of momentum
- conservative force
- constringence
- continuity principle
- convection
- convergence and divergence
- Coordinated Universal Time (page not yet available)
- cordite (page not yet available)
- Coriolis force (page not yet available)
- cosmic microwave background (page not yet available)
- cosmic X-ray background (page not yet available)
- cosmogony
- cosmology
- Coulomb force (page not yet available)
- Coulomb’s law (page not yet available)
- coulometry (page not yet available)
- countercurrent distribution (page not yet available)
- couple (page not yet available)
- covalent bond (page not yet available)
- CP violation (page not yet available)
- critical angle (page not yet available)
- critical mass (page not yet available)
- critical point (page not yet available)
- cross section (page not yet available)
- cryogenics
- crystal (page not yet available)
- crystal defect (page not yet available)
- crystallite (page not yet available)
- crystallography
- Curie point (page not yet available)
- curl (page not yet available)
- d’Alembert’s principle
- Dalton’s law (page not yet available)
- damping (page not yet available)
- Darcy’s law (page not yet available)
- dark matter (page not yet available)
- de Broglie wave (page not yet available)
- Debye-Hückel equation (page not yet available)
- decay constant
- decibel
- deformation and flow (page not yet available)
- degenerate gas (page not yet available)
- delta ray (page not yet available)
- density (page not yet available)
- density current (page not yet available)
- dew point (page not yet available)
- diadochy (page not yet available)
- dialysis (page not yet available)
- diamagnetism (page not yet available)
- diastereoisomer (page not yet available)
- dielectric (page not yet available)
- dielectric constant
- dielectric loss (page not yet available)
- differential thermal analysis (page not yet available)
- diffraction (page not yet available)
- diffraction grating
- diffusion (page not yet available)
- diffusion chamber (page not yet available)
- dimensional analysis (page not yet available)
- diopter
- dip circle
- dipolar hypothesis
- direct current (page not yet available)
- dispersion (page not yet available)
- displacement (page not yet available)
- displacement current (page not yet available)
- displacement law (page not yet available)
- distillation (page not yet available)
- Doppler effect
- dosimeter
- Do Toilets in Different Hemispheres Flush in Different Directions? (page not yet available)
- double bond
- double refraction
- drag
- ductility
- Dulong–Petit law
- dynamical time
- dynamics
- dynamo theory
- Eddington mass limit
- eddy
- eddy current
- elasticity
- elastic limit
- elastic wave
- electret
- electrical impedance
- electric arc
- electric charge
- electric current
- electric dipole
- electric displacement
- electric field
- electric flux
- electricity
- electric polarization
- electric potential
- electric power
- electric susceptibility
- electrogasdynamics
- electroluminescence
- electromagnet
- electromagnetic field
- electromagnetic radiation
- electromagnetic spectrum
- electromagnetism
- electromotive force
- electron
- electron affinity
- electron beam
- electron capture
- electron charge
- electron diffraction
- electronic configuration
- electronics
- electronic work function
- electron microscope
- electron microscopy
- electron optics
- electron paramagnetic resonance
- electron-probe microanalyzer
- electron scattering
- electron shell
- electron spectroscopy
- electrophoresis
- electrostatic induction
- electrostatics
- electrostriction
- electroweak theory
- E = mc2
- emulsifier
- emulsion
- enantiomer
- energy
- energy conversion
- energy, equipartition of
- energy state
- energy transfer
- enthalpy
- entropy
- envelope
- environmental scanning electron microscope (E.S.E.M.)
- Ephemeris Time
- equilibrium (page not yet available)
- equivalence principle (page not yet available)
- escape velocity (page not yet available)
- eutectic
- evaporation
- evaporator
- excitation
- exciton
- exsolution
- eyeglasses
- Fahrenheit temperature scale
- fallout
- farad
- faraday
- Faraday effect
- Faraday’s law of induction
- fatigue
- fault
- Fermat’s principle
- Fermi-Dirac statistics
- Fermi level
- fermion
- Fermi surface
- ferrimagnetism
- ferroelectricity
- ferromagnetism
- fetch
- Feynman diagram
- fiber optics
- field
- field emission
- field-emission microscope
- filter
- filtration
- fine structure
- first law of thermodynamics
- fission product
- flight, history of
- flocculation
- flotation
- fluid
- fluid mechanics
- fluorescence
- foam
- focusing
- forbidden lines
- force
- force, line of
- form
- fracture
- Franck–Hertz experiment
- free-electron model of metals
- free energy
- freefall
- freezing point
- frequency
- Fresnel lens
- friction
- Froude number
- fugacity
- fundamental force
- fusion reactor
- gamma decay
- gamma ray
- gamma-ray astronomy
- gamma-ray burst
- gas
- gas chromatography (page not yet available)
- gas laws (page not yet available)
- gauge theory
- gauss (page not yet available)
- Gauss’s law (page not yet available)
- gel (page not yet available)
- gelatin (page not yet available)
- gel chromatography (page not yet available)
- gel electrophoresis (page not yet available)
- general relativity
- geologic time
- geomagnetic field
- geomagnetics
- geophone
- geophysics
- geostationary orbit
- geostrophic motion
- geothermal energy
- Gibbs-Duhem equation
- glass
- gluon
- grain
- gravimetric analysis
- gravitational constant
- gravitational wave
- graviton
- gravity
- gravity, centre of
- Gravity: From Apples to the Universe
- green
- Greenwich Mean Time
- Gunn effect
- hadron
- half-life
- Hall effect
- halo
- Has Pink Always Been a “Girly” Color?
- Hawking radiation
- heat
- heat capacity
- heat transfer
- henry
- Henry’s law
- hexagonal system
- Higgs boson
- high-pressure phenomena
- high-voltage electron microscope
- hole
- holography
- Hooke’s law (page not yet available)
- How Albert Einstein Developed the Theory of General Relativity (page not yet available)
- How Are Crystals Made? (page not yet available)
- How Are Diamonds Made? (page not yet available)
- How Does Electricity Work?
- How Does Sound Travel?
- How Do Magnets Work? (page not yet available)
- How Do Mirrors Work?
- How Do Scientists Predict Tsunamis After Earthquakes?
- How Is Light Both a Particle and a Wave?
- How Was Gravity Discovered?
- How Will the Roman Space Telescope Learn About Dark Energy and Dark Matter?
- Huygens’ principle
- hydraulic jump
- hydraulic power
- hydraulics
- hydroelectric power
- hydrostatics
- hyperfine structure
- hyperon
- hysteresis
- ideal gas
- ideal gas law
- ideal solution
- incongruent melting
- inductance
- induction, electromagnetic
- induction heating
- inertia
- inertial force
- inertia, moment of
- infrared astronomy
- infrared radiation
- infrared source
- infrasonics
- insulator
- interface
- interference
- interference fringe
- intermediate vector boson
- internal energy
- internal pair production
- internal wave
- iodine value
- ionic bond (page not yet available)
- ionization (page not yet available)
- ionization energy (page not yet available)
- ionizing radiation (page not yet available)
- ion pair
- isobar
- isomer
- isomerism
- isometric system
- isospin
- isotone
- isotope dilution
- isotopic fractionation
- Josephson effect
- Joule heating
- Joule-Thomson effect
- J/psi particle
- kelvin
- Kelvin wave
- Kerr electro-optic effect
- kinematics
- kinetic energy
- kinetics
- kinetic theory of gases
- Kjeldahl method
- klystron
- Lagrange point
- laminar flow
- lapse rate
- latent heat
- latitude and longitude
- lattice energy
- Laue diffraction
- law of inertia
- laws of thermodynamics
- lens
- Lenz’s law
- lepton
- Liesegang ring
- lift
- light
- lightning
- linear motion
- line broadening
- liquid
- liquid crystal
- liquid-drop model
- litmus
- longitudinal wave
- Lorentz force
- loudness
- low Earth orbit
- low-temperature phenomenon
- lubrication
- luminescence (page not yet available)
- luminous intensity
- Mach number (page not yet available)
- Mach’s principle
- Madden-Julian oscillation
- magic number
- magnet
- magnetic circuit
- magnetic dipole
- magnetic field
- magnetic field strength
- magnetic force
- magnetic mirror
- magnetic monopole
- magnetic permeability
- magnetic pole
- magnetic resonance
- magnetic resonance imaging
- magnetic resonance spectroscopy
- magnetic Reynolds number
- magnetic survey
- magnetic susceptibility
- magnetism
- magnetohydrodynamics
- magneton
- magnetostriction
- magnetron
- magnification
- magnon
- Magnus effect
- marine geophysics
- mascon
- maser
- mass
- mass number
- mass spectrometry
- matter
- Maxwell-Boltzmann distribution
- Maxwell’s demon
- Maxwell’s equations
- mean free path
- mean life
- mechanical efficiency
- mechanical energy
- mechanics
- mechanics of solids
- Meissner effect
- melting
- melting point
- meridian
- mesic atom
- meson
- metacentre
- metal fatigue
- metallic bond
- metallography
- metallurgy
- metastable state
- micelle
- Michelson interferometer
- Michelson-Morley experiment
- microgravity
- microscope
- microwave
- microwave oven
- Miller indices
- Millikan oil-drop experiment
- mineral processing
- mirage
- mirror
- mirror nucleus
- mobility (page not yet available)
- moiré pattern (page not yet available)
- molar mass (page not yet available)
- molecular beam (page not yet available)
- molecular sieve (page not yet available)
- moment magnitude
- momentum
- monatomic gas
- monochromator
- monoclinic system
- Mössbauer effect
- motion
- motion, equation of
- multiverse
- Munsell colour system
- muon
- muonium
- musical sound
- nanoparticle
- nephelometry and turbidimetry
- neptunium series
- neutrino
- neutron
- neutron beam
- neutron capture
- neutron optics
- Newton’s laws of motion
- Newton’s rings
- noble metal
- noise
- noise pollution
- nuclear binding energy
- nuclear clock
- nuclear electromagnetic pulse
- nuclear energy
- nuclear fission
- nuclear fusion
- nuclear magnetic resonance
- nuclear model
- nuclear photographic emulsion
- nuclear reaction
- nucleon
- nucleosynthesis
- nuclide
- nutation
- ocean current (page not yet available)
- oersted (page not yet available)
- Ohm’s law (page not yet available)
- optical activity
- optical axis
- optical crystallography
- optical image
- optical model
- optical pumping
- optics
- orange
- orbit
- orbital
- orbital velocity
- orthorhombic system
- osmosis
- osmotic pressure
- overtone
- pair production
- paper chromatography
- parallax
- parallel
- paramagnetism
- parity
- particle physics
- Pascal’s principle
- Pauli exclusion principle
- Peltier effect
- perihelion
- period
- periodic motion
- periscope
- permeability
- permittivity
- pH
- phase diagram
- phase rule
- phenolphthalein
- phonon
- phosphor
- phosphorescence
- photoconductivity
- photodisintegration
- photoelasticity
- photoelectric effect
- photo-ionization
- photoluminescence (page not yet available)
- photon
- photovoltaic effect (page not yet available)
- physical constant
- physics
- pi bond (page not yet available)
- piezoelectricity
- pinch effect
- piston and cylinder
- pitch
- pi theorem (page not yet available)
- Planck’s constant
- Planck’s radiation law
- plaque
- plasma
- plasma oscillation
- plastic
- plasticity
- platinum group
- pleochroism
- p-n junction
- point group
- poison
- Poisson’s ratio
- Poisson’s spot
- polarimetry
- polarization
- polarography
- polaron
- polycrystal
- polymorphism
- population inversion
- position vector
- positron
- positronium
- potential energy
- Poynting vector
- precession
- pressure
- primary colour
- prism
- prompt neutron
- propellant
- proton
- proton-proton chain
- psychophysics
- pupil
- purple
- qualitative chemical analysis
- quantitative chemical analysis (page not yet available)
- quantum
- quantum chromodynamics
- quantum electrodynamics
- quantum field theory
- quantum mechanics
- quantum number
- quark
- quasicrystal
- quasiparticle
- racemic mixture
- radar
- radiant energy
- radiation
- radiation damage
- radiation measurement
- radiation pressure
- radiative forcing
- radioactive series
- radioactivity
- radio astronomy
- radio wave
- rainbow
- Raman effect
- range
- Rankine temperature scale
- rarefaction
- Rayleigh scattering
- Réaumur temperature scale
- red
- reduced mass
- reference frame
- reflection
- reflection seismology
- refraction
- refractive index
- refrigeration
- relative aperture
- relativistic mass
- relativistic mechanics
- relativity
- relay
- renewable energy
- renormalization
- resistivity
- resolution
- resonance
- resonator
- reststrahlen
- retort
- reverse osmosis
- reversibility
- Reynolds number
- rgb colour model
- Richardson number
- richter scale
- rip current
- rogue wave (page not yet available)
- rolling friction (page not yet available)
- rutherford model
- rydberg constant
- Saint Elmo’s fire
- saturation
- scanning electron microscope
- scanning tunneling microscope
- scattering
- Schottky effect
- Schrödinger equation
- Schwarzschild radius
- scintillation counter
- sea level
- secondary emission
- second law of thermodynamics
- Seebeck effect
- seiche
- seismic survey
- seismic wave
- seismograph
- seismology
- selection rule
- semiconductor
- separation and purification
- shear modulus
- shear stress
- shear wave
- shell atomic model
- shell nuclear model
- shock wave
- sidereal period
- sidereal time
- sievert
- sigma bond
- simple harmonic motion
- single bond
- single crystal
- skin effect
- slip
- slow neutron
- s-matrix
- Snell’s law
- soil mechanics
- sol
- solar constant
- solar energy
- solar neutrino problem
- solar power
- solar radiation
- solar time
- solenoid
- solid
- solid solution
- solid-state detector
- solubility
- solution
- solvent
- sonic boom
- sound
- sound barrier
- sound intensity
- sound production
- sound reception
- space
- space charge
- space group
- space-time
- spallation
- spark chamber (page not yet available)
- special relativity (page not yet available)
- specific gravity (page not yet available)
- specific heat (page not yet available)
- spectral line (page not yet available)
- spectral line series (page not yet available)
- spectrochemical analysis (page not yet available)
- spectrometer (page not yet available)
- spectrophotometry (page not yet available)
- spectroscopy
- spectrum
- speed
- speed of light
- speed of sound
- spherical aberration
- spin
- spin-statistics theorem
- spontaneous fission
- standard model
- standing wave
- Stark effect
- state, equation of
- static electricity
- static friction
- statics
- stationary phase
- statistical mechanics
- steam power
- Stefan-Boltzmann law
- Steno’s law
- stereoisomerism
- stereoscopy
- Stern-Gerlach experiment
- Stokes lines
- Stokes’s law
- strain
- streamline
- stress
- string theory
- stripping reaction
- strong force
- subatomic particle
- sublimation
- sunlight
- superconductivity
- superfluidity
- supergravity
- superposition, principle of
- supersonic flight
- supersymmetry
- surface tension
- symmetry
- synchrotron radiation
- syngas
- tachyon
- tau
- tautomerism
- telluric current
- temperature
- temperature–humidity index
- temperature inversion
- tensile strength
- terminal velocity
- tesla
- tetragonal system (page not yet available)
- The First Atomic Bombs Tested and Used During World War II
- thermal conduction
- thermal conductivity
- thermal energy
- thermal expansion
- thermal neutron
- thermal radiation
- thermionic emission
- thermodynamic equilibrium
- thermodynamics
- thermoelectricity
- thermoluminescence
- thermometer
- thermonuclear reaction
- The Solar Eclipse That Made Albert Einstein a Science Celebrity
- thin-layer chromatography
- thixotropy
- thomson atomic model
- Thomson effect
- thunderstorm
- tidal power
- timbre
- time
- time dilation
- time perception
- time reversal
- titration
- Today in History—February 27: The Discovery of Solar Radio Waves
- Today in History—January 21: When Supersonic Travel Took Off
- Today in History—July 16: The Day the End of the World Began
- Today in History—June 10: Benjamin Franklin Flies a Kite—and Makes History
- Today in History—October 2: Mummy Brown Paint Sales End
- tone
- torque
- Torricelli’s law
- total internal reflection
- transition
- transmission electron microscope
- transmutation
- transport phenomenon
- transverse wave
- trap
- tribology
- triclinic system
- trigonal system
- triple bond
- tristimulus system
- tsunami
- tunneling
- turbulence
- turbulent flow
- twinning
- twin paradox
- Tyndall effect
- ultramicroscope
- ultrasonics
- ultraviolet astronomy
- ultraviolet radiation
- ultraviolet telescope
- uncertainty principle
- undertow
- unified field theory
- uniform circular motion
- universal gas constant
- Universal Time
- vacancy
- vacuum
- valence
- valence electron
- vaporization
- vapour pressure
- vector
- velocity
- vertical mixing
- vibration
- violet
- viscosity
- volt
- volumetric analysis
- waterpower
- wave
- wave front
- wave function
- wavelength
- wave mechanics
- wave motion
- wavenumber
- wave-particle duality
- wave power
- wave velocity
- weak interaction
- weakly interacting massive particle
- wear
- weight
- weightlessness
- wet-bulb temperature
- What Causes a Drought?
- What Causes a Rainbow?
- What Causes Mirages?
- What Causes Tides in the Ocean?
- What Causes Tsunamis?
- What Color Is the Universe?
- What Is Antimatter?
- What Is Dark Matter?
- What Is the Difference Between a Meteotsunami, a Seiche, and a Storm Surge?
- What Is the Difference Between Energy and Power?
- What Is the Difference Between Mass and Density?
- What Is the Difference Between Mass and Volume?
- What Is the Difference Between Mass and Weight?
- What Makes a Wave Go Rogue?
- What’s the Difference Between Planets and Stars?
- What’s the Difference Between Speed and Velocity?
- whistler (page not yet available)
- white
- white noise
- Why Are Gymnasts So Short? (page not yet available)
- Why are Higher Elevations Colder? (page not yet available)
- Why Are Plants Green? (page not yet available)
- Why Are Rainbows Curved? (page not yet available)
- Why Are Rip Currents Dangerous?
- Why Are Some Metals More Conductive than Others?
- Why Do Coke and Mentos React?
- Why Does a Football Swerve?
- Why Does Salt Melt Ice?
- Why Does the Tropic of Cancer’s Location on Earth Move Over Time?
- Why Do We Have Seasons?
- Why Is Summer Warmer Than Winter?
- Wien’s law
- wind chill
- wind energy
- wind power
- work
- W particle
- X-ray
- X-ray astronomy
- X-ray diffraction
- X-ray microscope
- Yang-Mills theory
- yellow
- yield point
- yield strength
- Young’s experiment
- Young’s modulus
- ytterbium
- yttrium
- Zeeman effect
- zeolite
- zero-point energy
- Ziegler-Natta catalyst
- zinc
- zinc group element
- zirconia
- zirconium
- zone melting
- Z particle
- Zyklon-B
- zymogen