ABSTRACT
Fundamental phenomena of quantum mechanics are now studied by using very precise techniques. Modern views on an interpretation of quantum mechanics are reduced to a set of statements that allow one to explain the result of a measurement by avoiding the intrusion of the observer into the process of that measurement. Submicroscopic mechanics will help us to cope with difficulties associated with the necessity for uniting quantum theory with gravity. Quantum mechanics is based on postulates, above all its formalism prescribes that the state of a quantum system either pure or mixed is given by a vector in a complex vector space, namely, a Hilbert space. Particle physicists study really fundamental things, but somehow forget that their studies are precisely rooted in quantum mechanical formalism. When the velocity v0 of a moving particle is close to the speed of light c, then the system under consideration is characterized by the relativistic Lagrangian.
