96 relations: Ab initio, Absorption (electromagnetic radiation), Acoustic attenuation, Ampere, Angular frequency, Anisotropy, Arthur R. von Hippel, Atom, Birefringence, Brillouin zone, Cauchy distribution, Causality, Clausius–Mossotti relation, Convolution, Convolution theorem, Coulomb, Coulomb's constant, Cryostat, Density functional theory, Density of states, Dielectric, Dielectric loss, Dielectric spectroscopy, Dipole, Dirac delta function, Dispersion (optics), Displacement current, Drude model, Dual-polarization interferometry, Eigenvalues and eigenvectors, Electric displacement field, Electric field, Electric flux, Electric susceptibility, Electric-field screening, Electrical resistivity and conductivity, Electro-gyration, Electrolytic capacitor, Electromagnetic radiation, Electromagnetism, Electron, Ellipsometry, Farad, Fourier transform, Frequency, Frequency domain, Gauss's law, Gaussian surface, Green's function (many-body theory), Green–Kubo relations, ..., Heat, Hertz, Hydrogen bond, Imaginary unit, Institute of Electrical and Electronics Engineers, International Bureau of Weights and Measures, International System of Units, Ion, Ionizing radiation, Irrational number, ISO 31, Isotropy, Kramers–Kronig relations, Linear response function, List of things named after Carl Friedrich Gauss, Metre, Microwave, Molecule, National Institute of Standards and Technology, Nonlinear optics, Perfect conductor, Permeability (electromagnetism), Phase velocity, Photon, Plasma oscillation, Polarizability, Polarization density, Quantum mechanics, Quasioptics, Relative permittivity, Resonance, Rotational Brownian motion, Scalar (physics), Speed of light, Square metre, Supercapacitor, Tensor, Terahertz time-domain spectroscopy, Time domain, Transmission medium, Uniaxial crystal, Vacuum, Vacuum permeability, Vacuum permittivity, Viscosity, Volt. Expand index (46 more) »

## Ab initio

Ab initio is a Latin term meaning "from the beginning" and is derived from the Latin ab ("from") + initio, ablative singular of initium ("beginning").

New!!: Permittivity and Ab initio · See more »

## Absorption (electromagnetic radiation)

In physics, absorption of electromagnetic radiation is the way in which the energy of a photon is taken up by matter, typically the electrons of an atom.

New!!: Permittivity and Absorption (electromagnetic radiation) · See more »

## Acoustic attenuation

Acoustic attenuation is a measure of the energy loss of sound propagation in media.

New!!: Permittivity and Acoustic attenuation · See more »

## Ampere

The ampere (symbol: A), often shortened to "amp",SI supports only the use of symbols and deprecates the use of abbreviations for units.

New!!: Permittivity and Ampere · See more »

## Angular frequency

In physics, angular frequency ω (also referred to by the terms angular speed, radial frequency, circular frequency, orbital frequency, radian frequency, and pulsatance) is a scalar measure of rotation rate.

New!!: Permittivity and Angular frequency · See more »

## Anisotropy

Anisotropy, is the property of being directionally dependent, which implies different properties in different directions, as opposed to isotropy.

New!!: Permittivity and Anisotropy · See more »

## Arthur R. von Hippel

Arthur Robert von Hippel (November 19, 1898 – December 31, 2003) was a German American materials scientist and physicist.

New!!: Permittivity and Arthur R. von Hippel · See more »

## Atom

An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.

New!!: Permittivity and Atom · See more »

## Birefringence

Birefringence is the optical property of a material having a refractive index that depends on the polarization and propagation direction of light.

New!!: Permittivity and Birefringence · See more »

## Brillouin zone

In mathematics and solid state physics, the first Brillouin zone is a uniquely defined primitive cell in reciprocal space.

New!!: Permittivity and Brillouin zone · See more »

## Cauchy distribution

The Cauchy distribution, named after Augustin Cauchy, is a continuous probability distribution.

New!!: Permittivity and Cauchy distribution · See more »

## Causality

Causality (also referred to as causation, or cause and effect) is what connects one process (the cause) with another process or state (the effect), where the first is partly responsible for the second, and the second is partly dependent on the first.

New!!: Permittivity and Causality · See more »

## Clausius–Mossotti relation

The Clausius–Mossotti relation expresses the dielectric constant (relative permittivity) εr of a material in terms of the atomic polarizibility α of the material's constituent atoms and/or molecules, or a homogeneous mixture thereof.

New!!: Permittivity and Clausius–Mossotti relation · See more »

## Convolution

In mathematics (and, in particular, functional analysis) convolution is a mathematical operation on two functions (f and g) to produce a third function, that is typically viewed as a modified version of one of the original functions, giving the integral of the pointwise multiplication of the two functions as a function of the amount that one of the original functions is translated.

New!!: Permittivity and Convolution · See more »

## Convolution theorem

In mathematics, the convolution theorem states that under suitable conditions the Fourier transform of a convolution is the pointwise product of Fourier transforms.

New!!: Permittivity and Convolution theorem · See more »

## Coulomb

The coulomb (symbol: C) is the International System of Units (SI) unit of electric charge.

New!!: Permittivity and Coulomb · See more »

## Coulomb's constant

Coulomb's constant, the electric force constant, or the electrostatic constant (denoted) is a proportionality constant in electrodynamics equations.

New!!: Permittivity and Coulomb's constant · See more »

## Cryostat

A cryostat (from cryo meaning cold and stat meaning stable) is a device used to maintain low cryogenic temperatures of samples or devices mounted within the cryostat.

New!!: Permittivity and Cryostat · See more »

## Density functional theory

Density functional theory (DFT) is a computational quantum mechanical modelling method used in physics, chemistry and materials science to investigate the electronic structure (principally the ground state) of many-body systems, in particular atoms, molecules, and the condensed phases.

New!!: Permittivity and Density functional theory · See more »

## Density of states

In solid-state and condensed matter physics, the density of states (DOS) of a system describes the number of states per interval of energy at each energy level available to be occupied.

New!!: Permittivity and Density of states · See more »

## Dielectric

A dielectric (or dielectric material) is an electrical insulator that can be polarized by an applied electric field.

New!!: Permittivity and Dielectric · See more »

## Dielectric loss

Dielectric loss quantifies a dielectric material's inherent dissipation of electromagnetic energy (e.g. heat).

New!!: Permittivity and Dielectric loss · See more »

## Dielectric spectroscopy

Dielectric spectroscopy (which falls in a subcategory of impedance spectroscopy) measures the dielectric properties of a medium as a function of frequency.

New!!: Permittivity and Dielectric spectroscopy · See more »

## Dipole

In electromagnetism, there are two kinds of dipoles.

New!!: Permittivity and Dipole · See more »

## Dirac delta function

In mathematics, the Dirac delta function (function) is a generalized function or distribution introduced by the physicist Paul Dirac.

New!!: Permittivity and Dirac delta function · See more »

## Dispersion (optics)

In optics, dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency.

New!!: Permittivity and Dispersion (optics) · See more »

## Displacement current

In electromagnetism, displacement current density is the quantity appearing in Maxwell's equations that is defined in terms of the rate of change of, the electric displacement field.

New!!: Permittivity and Displacement current · See more »

## Drude model

The Drude model of electrical conduction was proposed in 1900 by Paul Drude to explain the transport properties of electrons in materials (especially metals).

New!!: Permittivity and Drude model · See more »

## Dual-polarization interferometry

Dual-polarization interferometry (DPI) is an analytical technique that probes molecular layers adsorbed to the surface of a waveguide using the evanescent wave of a laser beam.

New!!: Permittivity and Dual-polarization interferometry · See more »

## Eigenvalues and eigenvectors

In linear algebra, an eigenvector or characteristic vector of a linear transformation is a non-zero vector that changes by only a scalar factor when that linear transformation is applied to it.

New!!: Permittivity and Eigenvalues and eigenvectors · See more »

## Electric displacement field

In physics, the electric displacement field, denoted by D, is a vector field that appears in Maxwell's equations.

New!!: Permittivity and Electric displacement field · See more »

## Electric field

An electric field is a vector field surrounding an electric charge that exerts force on other charges, attracting or repelling them.

New!!: Permittivity and Electric field · See more »

## Electric flux

In electromagnetism, electric flux is the measure of flow of the electric field through a given area.

New!!: Permittivity and Electric flux · See more »

## Electric susceptibility

In electricity (electromagnetism), the electric susceptibility (\chi_; Latin: susceptibilis "receptive") is a dimensionless proportionality constant that indicates the degree of polarization of a dielectric material in response to an applied electric field.

New!!: Permittivity and Electric susceptibility · See more »

## Electric-field screening

In physics, screening is the damping of electric fields caused by the presence of mobile charge carriers.

New!!: Permittivity and Electric-field screening · See more »

## Electrical resistivity and conductivity

Electrical resistivity (also known as resistivity, specific electrical resistance, or volume resistivity) is a fundamental property that quantifies how strongly a given material opposes the flow of electric current.

New!!: Permittivity and Electrical resistivity and conductivity · See more »

## Electro-gyration

The electrogyration effect is the spatial dispersion phenomenon, that consists in the change of optical activity (gyration) of crystals by a constant or time-varying electric field.

New!!: Permittivity and Electro-gyration · See more »

## Electrolytic capacitor

An electrolytic capacitor (e-cap) is a polarized capacitor whose anode or positive plate is made of a metal that forms an insulating oxide layer through anodization.

New!!: Permittivity and Electrolytic capacitor · See more »

## Electromagnetic radiation

In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space-time, carrying electromagnetic radiant energy.

New!!: Permittivity and Electromagnetic radiation · See more »

## Electromagnetism

Electromagnetism is a branch of physics involving the study of the electromagnetic force, a type of physical interaction that occurs between electrically charged particles.

New!!: Permittivity and Electromagnetism · See more »

## Electron

The electron is a subatomic particle, symbol or, whose electric charge is negative one elementary charge.

New!!: Permittivity and Electron · See more »

## Ellipsometry

Ellipsometry is an optical technique for investigating the dielectric properties (complex refractive index or dielectric function) of thin films.

New!!: Permittivity and Ellipsometry · See more »

## Farad

The farad (symbol: F) is the SI derived unit of electrical capacitance, the ability of a body to store an electrical charge.

New!!: Permittivity and Farad · See more »

## Fourier transform

The Fourier transform (FT) decomposes a function of time (a signal) into the frequencies that make it up, in a way similar to how a musical chord can be expressed as the frequencies (or pitches) of its constituent notes.

New!!: Permittivity and Fourier transform · See more »

## Frequency

Frequency is the number of occurrences of a repeating event per unit of time.

New!!: Permittivity and Frequency · See more »

## Frequency domain

In electronics, control systems engineering, and statistics, the frequency domain refers to the analysis of mathematical functions or signals with respect to frequency, rather than time.

New!!: Permittivity and Frequency domain · See more »

## Gauss's law

In physics, Gauss's law, also known as Gauss's flux theorem, is a law relating the distribution of electric charge to the resulting electric field.

New!!: Permittivity and Gauss's law · See more »

## Gaussian surface

A Gaussian surface (sometimes abbreviated as G.S.) is a closed surface in three-dimensional space through which the flux of a vector field is calculated; usually the gravitational field, the electric field, or magnetic field.

New!!: Permittivity and Gaussian surface · See more »

## Green's function (many-body theory)

In many-body theory, the term Green's function (or Green function) is sometimes used interchangeably with correlation function, but refers specifically to correlators of field operators or creation and annihilation operators.

New!!: Permittivity and Green's function (many-body theory) · See more »

## Green–Kubo relations

The Green–Kubo relations (Melville S. Green 1954, Ryogo Kubo 1957) give the exact mathematical expression for transport coefficients \gamma in terms of integrals of time correlation functions.

New!!: Permittivity and Green–Kubo relations · See more »

## Heat

In thermodynamics, heat is energy transferred from one system to another as a result of thermal interactions.

New!!: Permittivity and Heat · See more »

## Hertz

The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

New!!: Permittivity and Hertz · See more »

## Hydrogen bond

A hydrogen bond is a partially electrostatic attraction between a hydrogen (H) which is bound to a more electronegative atom such as nitrogen (N), oxygen (O), or fluorine (F), and another adjacent atom bearing a lone pair of electrons.

New!!: Permittivity and Hydrogen bond · See more »

## Imaginary unit

The imaginary unit or unit imaginary number is a solution to the quadratic equation.

New!!: Permittivity and Imaginary unit · See more »

## Institute of Electrical and Electronics Engineers

The Institute of Electrical and Electronics Engineers (IEEE) is a professional association with its corporate office in New York City and its operations center in Piscataway, New Jersey.

New!!: Permittivity and Institute of Electrical and Electronics Engineers · See more »

## International Bureau of Weights and Measures

The International Bureau of Weights and Measures (Bureau international des poids et mesures) is an intergovernmental organization established by the Metre Convention, through which Member States act together on matters related to measurement science and measurement standards.

New!!: Permittivity and International Bureau of Weights and Measures · See more »

## International System of Units

The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system, and is the most widely used system of measurement.

New!!: Permittivity and International System of Units · See more »

## Ion

An ion is an atom or molecule that has a non-zero net electrical charge (its total number of electrons is not equal to its total number of protons).

New!!: Permittivity and Ion · See more »

## Ionizing radiation

Ionizing radiation (ionising radiation) is radiation that carries enough energy to liberate electrons from atoms or molecules, thereby ionizing them.

New!!: Permittivity and Ionizing radiation · See more »

## Irrational number

In mathematics, the irrational numbers are all the real numbers which are not rational numbers, the latter being the numbers constructed from ratios (or fractions) of integers.

New!!: Permittivity and Irrational number · See more »

## ISO 31

ISO 31 (Quantities and units, International Organization for Standardization, 1992) is a deprecated international standard for the use of physical quantities and units of measurement, and formulas involving them, in scientific and educational documents.

New!!: Permittivity and ISO 31 · See more »

## Isotropy

Isotropy is uniformity in all orientations; it is derived from the Greek isos (ἴσος, "equal") and tropos (τρόπος, "way").

New!!: Permittivity and Isotropy · See more »

## Kramers–Kronig relations

The Kramers–Kronig relations are bidirectional mathematical relations, connecting the real and imaginary parts of any complex function that is analytic in the upper half-plane.

New!!: Permittivity and Kramers–Kronig relations · See more »

## Linear response function

A linear response function describes the input-output relationship of a signal transducer such as a radio turning electromagnetic waves into music or a neuron turning synaptic input into a response.

New!!: Permittivity and Linear response function · See more »

## List of things named after Carl Friedrich Gauss

Carl Friedrich Gauss (1777–1855) is the eponym of all of the topics listed below.

New!!: Permittivity and List of things named after Carl Friedrich Gauss · See more »

## Metre

The metre (British spelling and BIPM spelling) or meter (American spelling) (from the French unit mètre, from the Greek noun μέτρον, "measure") is the base unit of length in some metric systems, including the International System of Units (SI).

New!!: Permittivity and Metre · See more »

## Microwave

Microwaves are a form of electromagnetic radiation with wavelengths ranging from one meter to one millimeter; with frequencies between and.

New!!: Permittivity and Microwave · See more »

## Molecule

A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.

New!!: Permittivity and Molecule · See more »

## National Institute of Standards and Technology

The National Institute of Standards and Technology (NIST) is one of the oldest physical science laboratories in the United States.

New!!: Permittivity and National Institute of Standards and Technology · See more »

## Nonlinear optics

Nonlinear optics (NLO) is the branch of optics that describes the behavior of light in nonlinear media, that is, media in which the dielectric polarization P responds nonlinearly to the electric field E of the light.

New!!: Permittivity and Nonlinear optics · See more »

## Perfect conductor

A perfect conductor or perfect electric conductor (PEC) is an idealized material exhibiting infinite electrical conductivity or, equivalently, zero resistivity (cf. perfect dielectric).

New!!: Permittivity and Perfect conductor · See more »

## Permeability (electromagnetism)

In electromagnetism, permeability is the measure of the ability of a material to support the formation of a magnetic field within itself.

New!!: Permittivity and Permeability (electromagnetism) · See more »

## Phase velocity

The phase velocity of a wave is the rate at which the phase of the wave propagates in space.

New!!: Permittivity and Phase velocity · See more »

## Photon

The photon is a type of elementary particle, the quantum of the electromagnetic field including electromagnetic radiation such as light, and the force carrier for the electromagnetic force (even when static via virtual particles).

New!!: Permittivity and Photon · See more »

## Plasma oscillation

Plasma oscillations, also known as Langmuir waves (after Irving Langmuir), are rapid oscillations of the electron density in conducting media such as plasmas or metals in the ultraviolet region.

New!!: Permittivity and Plasma oscillation · See more »

## Polarizability

Polarizability is the ability to form instantaneous dipoles.

New!!: Permittivity and Polarizability · See more »

## Polarization density

In classical electromagnetism, polarization density (or electric polarization, or simply polarization) is the vector field that expresses the density of permanent or induced electric dipole moments in a dielectric material.

New!!: Permittivity and Polarization density · See more »

## Quantum mechanics

Quantum mechanics (QM; also known as quantum physics, quantum theory, the wave mechanical model, or matrix mechanics), including quantum field theory, is a fundamental theory in physics which describes nature at the smallest scales of energy levels of atoms and subatomic particles.

New!!: Permittivity and Quantum mechanics · See more »

## Quasioptics

Quasioptics concerns the propagation of electromagnetic radiation when the size of the wavelength is comparable to the size of the optical components (e.g. lenses, mirrors, and apertures) and hence diffraction effects become significant.

New!!: Permittivity and Quasioptics · See more »

## Relative permittivity

The relative permittivity of a material is its (absolute) permittivity expressed as a ratio relative to the permittivity of vacuum.

New!!: Permittivity and Relative permittivity · See more »

## Resonance

In physics, resonance is a phenomenon in which a vibrating system or external force drives another system to oscillate with greater amplitude at specific frequencies.

New!!: Permittivity and Resonance · See more »

## Rotational Brownian motion

Rotational Brownian motion is the random change in the orientation of a polar molecule due to collisions with other molecules.

New!!: Permittivity and Rotational Brownian motion · See more »

## Scalar (physics)

A scalar or scalar quantity in physics is a physical quantity that can be described by a single element of a number field such as a real number, often accompanied by units of measurement.

New!!: Permittivity and Scalar (physics) · See more »

## Speed of light

The speed of light in vacuum, commonly denoted, is a universal physical constant important in many areas of physics.

New!!: Permittivity and Speed of light · See more »

## Square metre

The square metre (International spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the SI derived unit of area, with symbol m2 (Unicode character). It is the area of a square whose sides measure exactly one metre.

New!!: Permittivity and Square metre · See more »

## Supercapacitor

A supercapacitor (SC) (also called a supercap, ultracapacitor or Goldcap) is a high-capacity capacitor with capacitance values much higher than other capacitors (but lower voltage limits) that bridge the gap between electrolytic capacitors and rechargeable batteries.

New!!: Permittivity and Supercapacitor · See more »

## Tensor

In mathematics, tensors are geometric objects that describe linear relations between geometric vectors, scalars, and other tensors.

New!!: Permittivity and Tensor · See more »

## Terahertz time-domain spectroscopy

In physics, terahertz time-domain spectroscopy (THz-TDS) is a spectroscopic technique in which the properties of matter are probed with short pulses of terahertz radiation.

New!!: Permittivity and Terahertz time-domain spectroscopy · See more »

## Time domain

Time domain is the analysis of mathematical functions, physical signals or time series of economic or environmental data, with respect to time.

New!!: Permittivity and Time domain · See more »

## Transmission medium

A transmission medium is a material substance (solid, liquid, gas, or plasma) that can propagate energy waves.

New!!: Permittivity and Transmission medium · See more »

## Uniaxial crystal

Uniaxial crystals are transmissive optical elements in which the refractive index of one crystal axis is different from the other two crystal axes (i.e. ni ≠ nj.

New!!: Permittivity and Uniaxial crystal · See more »

## Vacuum

Vacuum is space devoid of matter.

New!!: Permittivity and Vacuum · See more »

## Vacuum permeability

The physical constant μ0, (pronounced "mu naught" or "mu zero"), commonly called the vacuum permeability, permeability of free space, permeability of vacuum, or magnetic constant, is an ideal, (baseline) physical constant, which is the value of magnetic permeability in a classical vacuum.

New!!: Permittivity and Vacuum permeability · See more »

## Vacuum permittivity

The physical constant (pronounced as "epsilon nought"), commonly called the vacuum permittivity, permittivity of free space or electric constant, is an ideal, (baseline) physical constant, which is the value of the absolute dielectric permittivity of classical vacuum.

New!!: Permittivity and Vacuum permittivity · See more »

## Viscosity

The viscosity of a fluid is the measure of its resistance to gradual deformation by shear stress or tensile stress.

New!!: Permittivity and Viscosity · See more »

## Volt

The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force.

New!!: Permittivity and Volt · See more »

## Redirects here:

Absolute permittivity, Complex permittivity, Dielectric function, Dielectric permittivity, Electric Permittivity, Electric permittivity, Electrical permittivity, Lossy material, Lossy medium, Permativity, Permettivity, Permissivity, Permitivity, Permitivity of Free Space, Permittivities, Permittivity Constant.

## References

[1] https://en.wikipedia.org/wiki/Permittivity