Electromagnetic four-potential

The electromagnetic four-potential is a way of representing the electric and magnetic fields in one mathematical object. It’s like an invisible bubble that contains both an electric and a magnetic force. The four-potential has four parts (“four-potential”) that tell us how strong the electric and magnetic forces are and how they are moving. The four parts are called the scalar potential, vector potential, and electric and magnetic fields. The scalar potential tells us the strength of the electric and magnetic field, the vector potential tells us the direction of the electric and magnetic fields, and the electric and magnetic fields tell us how strong and where the electric and magnetic fields are at any given point.