Source: wikibot/alfven-s-theorem
= Alfvén's theorem
{wiki=Alfvén's_theorem}
Alfvén's theorem is a principle in plasma physics, specifically within the context of magnetohydrodynamics (MHD). It describes the behavior of plasma in the presence of a magnetic field and is named after the Swedish physicist Hannes Alfvén, who received the Nobel Prize in Physics in 1970 for his work in this area.