Magnetohydrodynamics (MHD) is the science of the dynamics of electrically-conducting fluids. Examples of such fluids include
plasmas and liquid metals. The set of equations which describe MHD is a combination of the
Navier-Stokes equations of
fluid mechanics and
Maxwell's equations of
electromagnetism.
Active fields of MHD research include:
Some people consider Hannes Olof Gösta Alfvén to be the father of the discipline.