Today, Maxwell’s equations are used daily to describe all electric and magnetic phenomena, and to design antennae, radios, electric engines, and computers. And this is not all: these same equations are needed to explain how atoms function (they are held together by electrical forces), and why the particles of the material that forms a stone adhere together, or how the sun works. They describe an amazing number and range of phenomena. Almost everything that we witness taking place, with the exception of gravity and little else besides, is well described by Maxwell’s equations.

