Magnetohydrodynamics

Magnetohydrodynamics (or MHD for short) is the study of the interaction between a magnetic field and a plasma treated as a continuous medium (e.g. Cowling 1957, Roberts 1967, Priest 1982, 1994). Most of the universe is not a normal gas but is instead a plasma. We are all familiar on Earth with the three states of matter (solid, liquid and gas). You change from one state to another (such as ice to...