• Thumbnail for Relative permittivity
    The relative permittivity (in older texts, dielectric constant) is the permittivity of a material expressed as a ratio with the electric permittivity of...
    16 KB (2,033 words) - 15:49, 3 February 2025
  • Thumbnail for Permittivity
    In electromagnetism, the absolute permittivity, often simply called permittivity and denoted by the Greek letter ε (epsilon), is a measure of the electric...
    34 KB (4,456 words) - 20:11, 10 February 2025
  • Vacuum permittivity, commonly denoted ε0 (pronounced "epsilon nought" or "epsilon zero"), is the value of the absolute dielectric permittivity of classical...
    17 KB (2,223 words) - 15:09, 24 March 2025
  • Thumbnail for Refractive index
    the absolute permeability and permittivity of the medium, εr is the material's relative permittivity, and μr is its relative permeability. In non-magnetic...
    82 KB (9,198 words) - 12:45, 9 May 2025
  • Thumbnail for Permeability (electromagnetism)
    coined by William Thomson, 1st Baron Kelvin in 1872, and used alongside permittivity by Oliver Heaviside in 1885. The reciprocal of permeability is magnetic...
    23 KB (2,119 words) - 19:19, 13 May 2025
  • Thumbnail for Curie temperature
    Curie–Weiss law applies to the dielectric constant, also known as the relative permittivity: ϵ = ϵ 0 + C T − T 0 . {\displaystyle \epsilon =\epsilon _{0}+{\frac...
    48 KB (4,937 words) - 07:51, 14 April 2025
  • _{1}} is the relative permittivity of the background material (pure ice), ϵ 2 {\displaystyle \epsilon _{2}} is the relative permittivity of the inclusion...
    14 KB (1,882 words) - 08:36, 25 July 2023
  • Thumbnail for Superheated water
    the degree of alignment is measured by the relative permittivity. Water has a high relative permittivity of about 80 at room temperature; because polarity...
    24 KB (2,736 words) - 04:20, 11 July 2024
  • Thumbnail for Dielectric
    polarisability. The latter is expressed by a number called the relative permittivity. Insulator is generally used to indicate electrical obstruction...
    37 KB (4,775 words) - 07:01, 15 May 2025
  • frequently given as dimensionless constants; relative permittivity: ϵ r {\displaystyle \epsilon _{\text{r}}} and relative permeability: μ r {\displaystyle \mu...
    45 KB (5,383 words) - 02:13, 19 April 2025
  • Thumbnail for Exciton
    Coulomb forces are screened in a crystal, which is expressed as a relative permittivity εr significantly larger than 1 and (b) the Effective mass of the...
    37 KB (4,821 words) - 22:35, 7 May 2025
  • measurement of skin hydration. It uses a capacitive sensor to measure the relative permittivity of upper skin layers. Because these depend on hydration of skin...
    1 KB (96 words) - 06:37, 6 January 2024
  • Mossotti and Rudolf Clausius, expresses the dielectric constant (relative permittivity, εr) of a material in terms of the atomic polarizability, α, of...
    8 KB (1,099 words) - 22:59, 7 December 2023
  • Thumbnail for Vacuum
    fluctuations can produce transient virtual particle densities and a relative permittivity and relative permeability that are not identically unity. In the theory...
    67 KB (7,592 words) - 12:27, 17 May 2025
  • dielectric constant of the medium. The value 1+χ is called the relative permittivity of the medium, and is related to the refractive index n, for non-magnetic...
    8 KB (1,220 words) - 18:39, 29 April 2025
  • area, where εSiO2 = 3.9 is the relative permittivity of silicon dioxide ε0 = 8.854×10−12 F/m is the vacuum permittivity tox is the oxide thickness. A....
    2 KB (323 words) - 21:36, 21 May 2024
  • Thumbnail for Tauc–Lorentz model
    mathematical formula for the frequency dependence of the complex-valued relative permittivity, sometimes referred to as the dielectric function. The model has...
    8 KB (1,217 words) - 17:00, 5 January 2024
  • Thumbnail for Electrostatics
    induction, separation of charges due to electric fields. Permittivity and relative permittivity, the electric polarizability of materials. Quantization...
    19 KB (2,613 words) - 05:26, 12 May 2025
  • \varepsilon _{\mathrm {r} }=\epsilon /\epsilon _{0}} is the material's relative permittivity or dielectric constant (or in optics, the square of the refractive...
    15 KB (2,145 words) - 14:15, 3 January 2025
  • is the absolute permittivity of free space in farads per meter (F/m) and ϵ r {\displaystyle \epsilon _{r}} is the relative permittivity of the material...
    44 KB (6,551 words) - 02:47, 21 February 2025
  • {\displaystyle \varepsilon _{r}} is the relative permittivity of the medium, μ r {\displaystyle \mu _{r}} is the relative permeability of the medium, and c...
    3 KB (477 words) - 08:24, 25 April 2024
  • (subtractive metallization, direct metal etch); air gaps to further reduce relative permittivity of intermetal dielectric and, therefore, interconnect capacitance;...
    31 KB (2,556 words) - 13:34, 3 May 2025
  • Thumbnail for Wavenumber
    defined for a medium with complex-valued relative permittivity ε r {\displaystyle \varepsilon _{r}} , relative permeability μ r {\displaystyle \mu _{r}}...
    15 KB (1,939 words) - 00:05, 16 May 2025
  • Thumbnail for Dielectric heating
    εr″ is the imaginary part of the complex relative permittivity of the absorbing material, ε0 is the permittivity of free space and E the electric field...
    18 KB (2,380 words) - 19:44, 11 April 2025
  • Thumbnail for Bjerrum length
    \varepsilon _{r}} is the relative dielectric constant of the medium and ε 0 {\displaystyle \varepsilon _{0}} is the vacuum permittivity. For water at room temperature...
    3 KB (317 words) - 07:32, 10 December 2022
  • breakdown (D48/50) > 50 kV Dielectric strength 20 MV/m Relative permittivity (A) 4.4 Relative permittivity (D24/23) 4.4 Dissipation factor (A) 0.017 Dissipation...
    8 KB (630 words) - 20:16, 16 March 2025
  • Thumbnail for Precipitation (chemistry)
    precipitation in changing the nature of the solvent or the value of its relative permittivity (e.g., by replacing water by ethanol), or by increasing the ionic...
    12 KB (1,307 words) - 19:15, 21 January 2025
  • the familiar lossless permittivity given by the product of the free space permittivity and the relative real/absolute permittivity, or ε ′ = ε 0 ε r ′ ...
    8 KB (1,112 words) - 05:17, 18 April 2025
  • two electric charges, separated by a distance, r in a medium of relative permittivity εr is given by force = z 1 z 2 e 2 4 π ε 0 ε r r 2 {\displaystyle...
    43 KB (7,543 words) - 20:05, 19 March 2025
  • Thumbnail for Surface plasmon resonance
    vector, ε {\displaystyle \varepsilon } is the relative permittivity, and μ {\displaystyle \mu } is the relative permeability of the material (1: the glass...
    30 KB (3,654 words) - 22:17, 7 February 2025