I'm confused by the definition of dielectric constant. We all know that dielectric is function of wavelength, because materials respond in different ways depending on the energy of the light. But w...

Feb 18, 2016 · Dielectric constant is the ratio of permittivity of a medium to the permittivity of free space. How to find dielectric constant of a conductor?

Mar 31, 2024 · These equations seem to hold in most cases, but there are exceptions (e.g., a dielectric sphere uniformly polarized in a uniform electric field). My textbook tells me that these expressions …

Feb 12, 2019 · A dielectric with high permittivity $\varepsilon$ permits (requires) more polarization for a given field magnitude than a low permittivity one. More polarization means more charge stored, so …

Jun 26, 2025 · $\varepsilon_2$ is the imaginary part of the dielectric constant $\varepsilon$ and describes absorption. So if $\varepsilon_2$ is negative, it would mean that the material is able to …

Jul 2, 2020 · I wonder why the dielectric strength is higher the thinner the material is: "Dielectric films tend to exhibit greater dielectric strength than thicker samples of the same material." Sou...

Apr 30, 2024 · Here is a concrete example. Consider two geometrically identical parallel-plate capacitors, one without dielectric and the other with dielectric, charged to the same voltage. The …

Jan 9, 2016 · I'm wondering what the dielectric constant or permittivity of metals is --particularly copper. Do metals have an infinite permittivity?

Jan 27, 2025 · Further, this would imply that the equation for net displacement current in a dielectric medium would be $\epsilon_ok \frac {d\phi_E} {dt}$ However, this result doesn't make intuitive sense …

Mar 4, 2024 · The graph of dielectric constant is not linear with respect to increasing frequency. Polarization mechanism cannot keep with the frequency, and hence the dielectric constant abruptly …