电容率[Dielectric Constant] - 达人(其实～我是卧底，来自外星)

2004/12/14 | 电容率[Dielectric Constant]
类别(Ω〖物理〗) | 评论(0) | 阅读(102) | 发表于 13:12: The dielectric constant is a characteristic quantity of a given dielectric substance, sometimes called the relative permittivity (Bekefi and Barrett 1987, p. 418). In general, the dielectric constant is a complex constant, with the real part giving reflective surface properties (Fresnel reflection coefficients), and the imaginary part giving the radio absorption coefficient .
In cgs,
(1)

where is the electric susceptibility. In MKS,
(2)

where is the electric permittivity and is the permittivity of free space.
The corresponding quantity for magnetism is called the relative permeability .; 0