Magnetohydrodynamics (MHD) is the study of the behavior of electrically conducting fluids in the presence of magnetic fields. This field combines principles from magnetism, fluid dynamics, and plasma physics to understand how these fluids, such as liquid metals or plasma, interact with magnetic forces. MHD is important in various applications, including astrophysics, where it helps explain phenomena like solar flares and the behavior of stars. It also plays a role in engineering, particularly in the design of nuclear fusion reactors and electromagnetic pumps, where controlling fluid flow with magnetic fields is essential.