Complex Permittivity 170 浏览 0关注

In electromagnetism, absolute permittivity is the measure of the resistance that is encountered when forming an electric field in a medium. In other words, permittivity is a measure of how an electric field affects, and is affected by, a dielectric medium. The permittivity of a medium describes how much electric field (more correctly, flux) is 'generated' per unit charge in that medium. More electric flux exists in a medium with a high permittivity (per unit charge) because of polarization effects. Permittivity is directly related to electric susceptibility, which is a measure of how easily a dielectric polarization density|polarizes in response to an electric field. Thus, permittivity relates to a material's ability to transmit (or permit) an electric field. In SI units, permittivity ε is measured in farads per meter (F/m); electric susceptibility χ is dimensionless. They are related to each other through :\varepsilon = \varepsilon_{\text{r}} \varepsilon_0 = (...
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