According to the *Dynamic Model* of elementary particles, the hydrogen atom, as a paired proton-electron system, represents by itself the stable wave system of the longitudinal-transversal structure. The wave *exchange* (interaction) takes place continuously between the *longitudinal (spherical)* wave field of the proton and transversal (cylindrical) wave field of the orbiting electron (as is described in the paper *On the Spectral Terms of H-atom*). This exchange has the dynamically equilibrium character and runs at the frequency .

The stable states of the H-atom form, in such an exafrequency wave field, the ** spectrum of dynamically stationary states** defined by characteristic values of arguments of Bessel functions:

, where ,

and generate the *Background Spectrum of Zero Level Radiation*

(both spectra are described in details in the book *Atomic Structure of Matter-Space*, 2001), where , , are Bessel functions; z_{r,s}, z_{p,m}, are zeros of Bessel functions; the subscripts *p, q, r* indicate the order of Bessel functions and m, n, s - the number of the root. The last defines the number of the radial shell. Zeros of Bessel functions define the radial shells with zero values of radial displacements (oscillations), *i.e.*, shells of stationary states. The quantity is the constant equal to the oscillation amplitude at the sphere of the wave radius (m_{p} is the proton mass; r_{0} is the Bohr radius; *h* is the Planck constant, *R* is the Rydberg constant).

An estimation of perturbation of the most probable stationary state (*n* = 1) leads to the following result. The zero of the second *kinetic shell* is ; hence, at and , we arrive at

This wavelength is within the extremum of the spectral density of black-body radiation of the absolute temperature

where is the *fundamental period-quantum*. The temperature obtained practically coincides with the temperature of "relict" *background measured by NASA's* Cosmic Background Explorer (COBE) Far Infrared Absolute Spectrophotometer (FIRAS) to four significant digits ().

The existence of the zero level radiation of H-atoms *questions the Big Bang hypothesis* of the origin of the Universe (in support of the conclusion made, *e.g.*, by A.K.T. Assis and M.C.D. Neves in their work of 1995) and quantum mechanical probabilistic atomic model, which excludes an electron's orbital motion *along a trajectory* as a matter of principle.