*and*

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

*of the electron*

**orbital moment of momentum**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.

─ ☼☼☼ ─

On the other hand, one of the *dynamic parameters* of *human being* is the

**equal to the sound pressure at the frequency nearly in the air under the normal conditions,**

*threshold of audibility**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*, is

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

─ ☼☼☼ ─

As we see, the action *h _{s,min}*, related to the

*process, practically coincides with Planck's action*

**acoustic***h*having relation to

*processes.*

**electromagnetic**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*obtained theoretically in the framework of

_{e}*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

*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.*

**minimal***acoustic action*on the threshold of audibility─ ☼☼☼ ─

*and*

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

*(the base*

**sonic speed**υ_{s}*speed) in air is*

**wave**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

*υ*. And the ratio

_{0}*υ*to the

_{0}*(which is the*

**speed of light***basis wave speed of exchange of matter-space-time at the subatomic level*) is

Hence, the Bohr speed *υ _{0}*, in some sense, is also the threshold speed, as the limit
speed of the electron at the first orbit of the hydrogen atom.

─ ☼☼☼ ─

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

*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*

**spherical-cylindrical***υ*and

_{s}*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

**. All this is revealed in details in the book "**

*the wave motion is the collective motion of a great variety of microparticles belonging to given space**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?*"

─ ☼☼☼ ─