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Alfvén wave

(a type of transverse wave along magnetic field lines in plasma)

An Alfvén wave is a type of transverse magnetohydrodynamic wave along magnetic field lines in a plasma. Ions drawn away from alignment along field lines are restored by magnetic force, producing something like waves on a taught string. The terms Alfvén speed and Alfvén velocity refer respectively to the speed and velocity of such waves. An Alfvén Mach number is a Mach number specific to the speed of Alfvén waves.

Further reading:én_wave

Referenced by pages:
Mach number
plasma wave