Nature demonstrates the perfect harmony within any and between different its levels, in particular, atomic and molecular. The natural thought arises in this connection:

Whether does it exist a correlation between the basic parameters
of the hydrogen atom and human being

created of hydrogen atoms in 9.5%? Let us consider some dynamic parameters of the same dimensionality characterizing both aforementioned objects belonging to very different levels of the Universe.

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The main dynamic parameter of H-atom is the orbital moment of momentum of the electron

where is the electron mass, is the radius of the Bohr first orbit (Bohr radius), is the speed of the electron on the Bohr first orbit.

If we multiply the orbital momentum by , we obtain the orbital action of the electron h called the Planck constant:

Hence, the numerical value and dimensionality of the orbital action h are

that corresponds to the CODATA Internationally recommended value.

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On the other hand, one of the dynamic parameters of human being is the threshold of audibility equal to the sound pressure at the frequency nearly in the air under the normal conditions, i.e., normal temperature and pressure (300 K, 1 atm).

The following expression relates the sound pressure P with the acoustic action h_s:

where m is the average mass of air molecules and ρ is the density of air. Then, the minimal acoustic action on the threshold of audibility of man, corresponding to the minimal sound pressure P_min, is

where is the average relative mass of air molecules, is the density of air under normal conditions, is the unified atomic mass unit.

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As we see, the action h_s,min, related to the acoustic process, practically coincides with Planck's action h having relation to electromagnetic processes.

It is very interesting also to note that on the level of the threshold of audibility, the minimal threshold amplitude of acoustic oscillations αmin at the frequency 1781.25 Hz is equal to the value of the electron radius r_e obtained theoretically in the framework of dynamic model of elementary particles:

where is the speed of sound in air under normal conditions.

Thus, the coincidence of magnitudes of the orbital action of the electron in H-atom and minimal acoustic action on the threshold of audibility of man is the obvious fact. It enables to conclude that the strict correlation of basic parameters of the hydrogen atom and human being actually takes place. We can confirm this conclusion with other examples. Below is one of them.

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Let us turn to the so-called "fine-structure constant" (alpha), which is very nearly equal to 1/137. In the language of modern physics, it is the "coupling constant" or measure of the strength of the electromagnetic force that governs how electrically charged elementary particles (e.g., electron, muon) and light (photons) interact.

Returning again to man, we find that on the upper acoustic threshold of pain (at the sound pressure ), the ratio α of the threshold oscillatory speed, , to the sonic speed υ_s (the base wave speed) in air is

The sound level at P_max is close to the peak level at ear of 0.303 caliber rifle (sound pressure , sound level 160 dB).

At the electromagnetic field level, the "threshold" speed of oscillations is called the Bohr first speed υ₀. And the ratio υ₀ to the speed of light (which is the basis wave speed of exchange of matter-space-time at the subatomic level) is

Hence, the Bohr speed υ₀, in some sense, is also the threshold speed, as the limit speed of the electron at the first orbit of the hydrogen atom.

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The above considered examples show that the "fine-structure constant" of the microworld, , reflects the scale correlation of threshold states of conjugate oscillatory-wave processes at different levels of the Universe, not only electromagnetic.

More correctly and strictly speaking, the fine-structure constant reflects the scale correlation of basis and superstructure of wave fields-spaces of objects in the Universe, having the contradictory spherical-cylindrical character. With that, the physical field-space of the Universe represents by itself an infinite series of spaces embedded in each other (recalling a set of nesting dolls, or an infinite functional series). This series of spaces expresses the fundamental concept of natural philosophy concerning the infinite divisibility of matter. As concerns the speeds υ_s and c, these are the base wave speeds of two distinct spaces of the field of matter-space-time, in which the corresponding wave motion takes place. And the wave motion is the collective motion of a great variety of microparticles belonging to given space. All this is revealed in details in the book "Atomic Structure of Matter-Space" (2001).

Very like that we arrived at the right answer to the questions on "Why is the fine structure constant, which measures the strength of electromagnetism, about 1/137.036?" and "Where did this dimensionless constant of nature come from?"

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