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  2. Relative permittivity - Wikipedia

    en.wikipedia.org/wiki/Relative_permittivity

    The relative static permittivity, ε r, can be measured for static electric fields as follows: first the capacitance of a test capacitor, C 0, is measured with vacuum between its plates. Then, using the same capacitor and distance between its plates, the capacitance C with a dielectric between the plates is measured.

  3. Permittivity - Wikipedia

    en.wikipedia.org/wiki/Permittivity

    The relative permittivity of a material can be found by a variety of static electrical measurements. The complex permittivity is evaluated over a wide range of frequencies by using different variants of dielectric spectroscopy , covering nearly 21 orders of magnitude from 10 −6 to 10 15 hertz .

  4. Template:Relative permittivity table - Wikipedia

    en.wikipedia.org/wiki/Template:Relative...

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  5. Electric susceptibility - Wikipedia

    en.wikipedia.org/wiki/Electric_susceptibility

    In electricity (electromagnetism), the electric susceptibility (; 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.

  6. List of piezoelectric materials - Wikipedia

    en.wikipedia.org/wiki/List_of_piezoelectric...

    Relative permittivity (ε r) is the ratio between the absolute permittivity of the piezoelectric material, ε, and the vacuum permittivity, ε 0. The electromechanical coupling factor k is an indicator of the effectiveness with which a piezoelectric material converts electrical energy into mechanical energy, or converts mechanical energy into ...

  7. Ampère's circuital law - Wikipedia

    en.wikipedia.org/wiki/Ampère's_circuital_law

    where ε 0 is the electric constant, ε r the relative static permittivity, and P is the polarization density. Substituting this form for D in the expression for displacement current, it has two components:

  8. Tauc–Lorentz model - Wikipedia

    en.wikipedia.org/wiki/Tauc–Lorentz_model

    The real (blue solid line) and imaginary (orange dashed line) components of relative permittivity are plotted for model with parameters = 3.2 eV, = 4.5 eV, = 100 eV, = 1 eV, and = 3.5. The Tauc–Lorentz model is a mathematical formula for the frequency dependence of the complex-valued relative permittivity , sometimes referred to as the ...

  9. Clausius–Mossotti relation - Wikipedia

    en.wikipedia.org/wiki/Clausius–Mossotti_relation

    In electromagnetism, the Clausius–Mossotti relation, named for O. F. Mossotti and Rudolf Clausius, expresses the dielectric constant (relative permittivity, ε r) of a material in terms of the atomic polarizability, α, of the material's constituent atoms and/or molecules, or a homogeneous mixture thereof.