(electricity and magnetism and their interaction)
Electromagnetism (EM or as an adjective, electromagnetic)
refers to electricity and magnetism and their interaction.
Electromagnetic theory describes their behavior,
and electromagnetic radiation is visible light and similar radiations,
the term making clear their relation to electricity and magnetism.
cosmic background radiation (CBR)
electromagnetic radiation (EMR)
magnetic dipole radiation
Navier-Stokes equations (NS equations)
Poynting vector (S)
Theory of Everything (TOE)