get_magnetic_field#

emg3d.fields.get_magnetic_field(model, efield)[source]#

Return magnetic field corresponding to provided electric field.

Retrieve the magnetic field $$\mathbf{H}$$ from the electric field $$\mathbf{E}$$ using Farady’s law, given by

$\nabla \times \mathbf{E} = \rm{i}\omega\mu\mathbf{H} .$

Note that the magnetic field is defined on the faces of the grid, unlike the electric field which is defined on the edges.

Parameters
modelModel

The model; a emg3d.models.Model instance.

efieldField

The electric field; a emg3d.fields.Field instance.

Returns
hfieldField

The magnetic field; a emg3d.fields.Field instance.