This datatype describes the time dependent Maxwell equations of the
following form (where is the spatial charge density and
is the free current (not including bound current) density ):
(Electric) discplacement field:
Magnetic field:
Nonexistence of magnetic monopoles:
Sources of electric field:
The magnetic permeability and the electric
permitivity are assumed constant or variable.
D is the (electric) displacement field
vector and B is the magnetic field vector (also called magnetic induction).
Nodes of different colours represent the following:
Solid arrows point from a derived type to the parent type which it
extends. Dashed arrows point from a derived type to the other
types it contains as a components, with a label listing the name(s) of
said component(s).