Can Electromagnetic Scalar Waves be Radiated by a Metal Sphere

There is a lot of chattering on the Internet about Tesla waves, vacuum energy, scalar waves and so on. Professor Meyl says he has a complete theory, experimental evidence and apparatus on these waves. In a theoretical paper Van Vlaenderen introduced a generalization of classical electrodynamics for the prediction of scalar field effects. It is said the Monstein has demonstrated the physical existence of such scalar waves. NASA in a report seems to consider such waves as a promising item to be studied. Some other papers appeared in arXiv. I�ve already showed that such waves are a consequence of �generalized� Maxwell fields which simply mean space time analytic functions not limited by the Lorenz gauge condition, but accepted instead in a wide sense. In this paper I remember my ideas on these waves, together with my doubts about their physical existence. In fact, the deduction of the scalar waves equations, together with their physical interpretation, in my opinion demonstrates nothing about the physical existence of scalar waves. I discuss the experiment of Monstein, and suggest some other experiment. Obviously I think that the lack of demonstration of the existence doesn�t mean the demonstration of inexistence.