*************************** Electrical Permittivity *************************** :: Electrical Permittivity = {model_name} {float} [] ----------------------- **Description / Usage** ----------------------- This required card is used to specify the model for electrical permittivity. Definitions of the input parameters are as follows: CONSTANT Name of the model for constant electrical permittivity. | * -the value of electrical permittivity. | COMPLEX_CONSTANT complex permittivity (for Time-Harmonic Maxwell with Nedelec elements) * real part * imaginary part REFRACTIVE_INDEX Calculate permittivity using the refractive index and extinction index cards (for Time-Harmonic Maxwell with Nedelec elements) .. math:: \epsilon_r = (n - ik)^2 Where :math:`n` is the refractive index and :math:`k` is the extinction index ------------ **Examples** ------------ Following are sample cards: :: Electrical Permittivity = CONSTANT 1. ------------------------- **Technical Discussion** ------------------------- This card is utilized to set the electrical permittivity for electrostatic problems. -------------- **References** -------------- No References.