Alfvén's Theorem

Alfvén's Theorem states that in an ideal conducting plasma, magnetic field lines move with the fluid, behaving as if they are "frozen" into it. This means that as the plasma flows, the magnetic field lines are carried along without breaking or reconnecting. Imagine colored lines embedded in a flowing liquid; they move with the fluid and do not change their connections. This concept helps explain phenomena like solar flares and magnetic storms, where magnetic fields and plasma interact dynamically. The theorem highlights the close relationship between magnetic fields and plasma motion in highly conductive environments.