Electromagnetic field

The electromagnetic field is composed of two related vectorial fields, the electric field and the magnetic field. This means that the vectors (E and B that characterize the field have a value defined at each point of space and time. If only E, the electrical field, is nonzero and is constant in time, the field is said to be an [electrostatic field]?.

The behaviour of electromagnetic fields can be described with Maxwell's equations, and their quantum basis by quantum electrodynamics.