Magnetohydrodynamics
Magnetohydrodynamics (MHD; also called magnetofluid dynamics or hydromagnetics) is a model of electrically conducting fluids that treats all types of charged particles together as a single continuous fluid. It is primarily concerned with the low-frequency, large-scale magnetic behavior of plasmas and liquid metals and has applications in multiple fields, including space physics, geophysics, astrophysics, and engineering.