In electromagnetism, the absolute permittivity, often simply called permittivity and denoted by the Greek letter ε , is a measure of the electric polarizability of a dielectric material. A material with high permittivity polarizes more in response to an applied electric field than a material with low permittivity, thereby storing more energy ...

電位移 的定義式為 = + ； 其中， 是電場， 是電極化強度。 對於均向性的、線性的、均勻介電質，電極化強度 與電場 成正比： = ； 其中， 是電極化率 所以，電位移與電場的關係方程式為 = ； 其中， 是電容率。 假若，介電質是異向性的，則電容率是一個二階張量，可用矩陣來表示。

The dielectric constant, known as the permittivity of a material, is discussed on this page. This property of a material slows down the propagation of light and reduces the wavelength. The units are Farads per meter.

Permittivity and permeability are two different measures used in electromagnetism. Permittivity measures the ability of a material to store energy within the material. Permeability is a measure of the ability of a material to support the formation of a magnetic field within the material.

2018年10月9日 · Permittivity Definition: Permittivity is defined as a measure of how an electric field affects and is affected by a dielectric medium. Relative Permittivity: Relative permittivity is the ratio of a medium’s permittivity to the permittivity of a vacuum.

In electromagnetism, permittivity, which is also known as absolute permittivity, is a measure of the electric polarizability of a dielectric or an insulator. The permittivity also characterizes the ability of the dielectric to store electric energy in an electrical field.

2025年3月8日 · Permittivity, constant of proportionality that relates the electric field in a material to the electric displacement in that material. It characterizes the tendency of the atomic charge in an insulating material to distort in the presence of an electric field.

permittivity /ˌpɜːmɪˈtɪvɪtɪ/ 1.N a measure of the response of a substance to an electric field, expressed as the ratio of its electric displacement to the applied field strength; measured in farads per metre 电容率 ( symbol: ε) → see also relative permittivity, electric constant [1]

2023年11月17日 · Permittivity and Permeability are two fundamental properties of materials that play a crucial role in the behavior of electromagnetic waves and related fields. Permittivity, represented by the symbol ε (epsilon), describes a material's ability to permit the electric field to pass through it.

Permittivity (electric permittivity) is the ratio of electric displacement to the electric field intensity. It is a constant of proportionality between these two parameters. In the meter-kilogram-second and International System of Units ( SI ) frameworks, the permittivity of free space in a vacuum is symbolized as ε o.