In a number of scientific publications is asserted that the permittivity and permeability of material media depends on frequency. But even Maxwell himself, who was the author of the basic equations of electrodynamics, believed that ε and μ were frequency-independent fundamental constants. The article shows that Max well was right, and the recognition of the presence of dispersion in the dielectric constant and magnetic permeability is a physical and methodological error. In it is shown that the kinetic inductance of charge has the same fundamental value as the dielectric and magnetic constant of material media. Are introduced the new concepts of the magneto electro kinetic wave and electro magneto potential waves, and also the kinetic capacitance.