"Magnetohydrodynamics, or MHD, is a branch of the science of the dynamics of matter moving in an electromagnetic field, especially where currents established in the matter by induction modify the field, so that the field and dynamics equations are coupled."
One of the specialty areas of the RCMP is accident reconstruction. These people analyze traffic accidents to determine the cause of an accident and the causes of any injuries that people sustained. It is also their job to decide whether or not the accident was preventable.