Presently, we imagine the physical vacuum as a superfluid quantum medium containing enormous amount of particle-antiparticle pairs arising and annihilating continuously. It is the Bose-Einstein condensate existing at super low temperatures of the cosmic space. Then a motion of this cold superfluid quantum medium can be described in the non-relativistic limit by pair of equations-the Navier-Stokes equation and the continuity equation. However, the first equation describes motion of a classical viscous fluid. We need to modify this equation. The modifications concern to the pressure gradient nabla P and to the term incorporating the viscosity of the fluid. The modification of the pressure gradient (nabla P => nabla P- P nabla ln(rho_м)) leads to appearance of the quantum potential, Q, equal to the pressure divided by the density distribution rho, namely, Q = P/rho. As a result, the above-mentioned pair of equations leads to emerging the Schrodinger equation when defining the wave function in the polar form bearing information about the velocity field of the fluid and the mass density distribution, rho_м. From the above it follows, that the wave function is a real object evolving on the superfluid quantum space. Because of reflecting from any obstacles, like slits in a grating, the wave function creates an interference pattern near a moving particle. As a result, the interference fringes provides an optimal path for subsequent movement of the particle. It proves that the interpretation of quantum mechanics given by de Broglie and further developed by Bohm is the correct interpretation. With regard to the modification of the viscosity, it would seem that, in the first approximation, we could discard it. This is not a good idea.