The quantum mechanics, as is known, was the theorists «powerful answer» to sensational results of experiments which have shown up the wave properties of smallest particles of substance. Disputes on the nature of such a strange microparticles behavior had not yet time to calm down, but the theory of phenomena in the form of «wave mechanics» was already complete. According to this theory a freely moving particle is described by «probability» wave function in the form of a monochromatic wave. Besides many other open-ended questions stipulated by so-called postulates, founders of the quantum theory have left without answer and the most crucial issue: why elementary particles of substance (as oscillatory systems) should be indispensable linear – monofrequent? Later there appeared experimental data «provoking» an idea of basic nonlinearity of oscillating microcosm, but the quantum mechanics has already turned into «a sacred cow» and any doubt about its validity actually meant «excommunication» from science.