11. These systems have low electrical conductivity and low dielectric permittivity . 12. The systems employ insulation materials that have a low permittivity and loss. 13. The permittivity and the loss are dielectric properties of the insulation material. 14. Where ? 0 is the vacuum permittivity and ? 0 the vacuum permeability. 15. Note the simple frequency dependence of the susceptibility, or equivalently the permittivity . 16. Permittivity as a function of frequency can take on real or complex values.17. This frequency dependence of the susceptibility leads to frequency dependence of the permittivity . 18. The permittivity of a medium changes with the frequency of the magnetic field. 19. Water droplets have a permittivity that is much higher than the surrounding oil. 20. This results in control over material parameters known as permittivity and magnetic permeability.
