Maxwell's equations solutions in vacuum - is a free electromagnetics waves. Such solutions can be obtained even without knowing anything about the charges and currents. Does this mean that such waves is the essence , not related charges, e.g. free electromagnetic waves? Moreover, the Maxwell's equations with ##\delta##-shaped sources also give the solutions, that looks like free electromagnetic waves, but in a far (wave) zone. Sometimes it is said that it is a field that is off the charge , but its amplitude is uniquely determined by the motion of the sources . Is it possible to think that there are waves that are generated by charges , and others which exist independently?