geoana.em.fdem.HarmonicPlaneWave.wavenumber

property HarmonicPlaneWave.wavenumber

Wavenumber for an electromagnetic planewave in a homogenous isotropic medium.

Where \(\sigma\) is the electrical conductivity, \(\mu\) is the magnetic permeability, \(\varepsilon\) is the dielectric permittivity and \(\omega = 2\pi f\) is the angular frequency, the wavenumber is:

\[k = \sqrt{\omega^2 \mu \varepsilon - i \omega \mu \sigma}\]

In the quasistatic regime, this expression simplifies to:

\[k = \sqrt{-i \omega \mu \sigma}\]

Returns:

complex

Wavenumber for an electromagnetic planewave in a homogeneous isotropic medium. Returns the quasistatic approximation if the property quasistatic of the class instance is True.