Because the hybridity of the Earth's motion is the absolute prerequisite for subjective scientific observation, the Sphere Observer is forced to process the helix into his frame of reference.

For this purpose, only one of the helix windings suffices. At its centre, S'- Sun represents the accelerated motion of the Sun during exactly one (earth) year, and the winding itself represents the hybrid motion (translation) of the uniformly rotating Earth during the four seasons of that year.


This 3D helix winding then has to be inserted into the frame of reference as a circle-centre shape. This is possible only if you compress that winding so that the sun comes to a standstill.
Because the periodicities of both years and seasons have to be incorporated into it as well – the periodicity of the days already exists as the sun arc - you need two circle-centre shapes at perpendicular angles:

                                                   The two circle-centre shapes of the helix

• a circle-centre shape with the circle representing the uniform translation of a uniformly rotating Earth with respect to a stationary sun in the centre, as shown in figure A

• a circle-centre shape for the infinite number of seasonal moments (slices) on the circle corresponding to an infinite number of  S'- Sun moments (slices) in the centre. (We’re dealing with a compressed helix winding representing the alternation of the four seasons in respect to a centre that consists of the compressed annual movement of the Sun: S'- Sun.) Well then, it can hardly be a coincidence: Because the earth's surface is unbounded, any point on it is at its centre. In case of the earth’s surface, as in S'- Sun, this includes an infinite number of points and therefore the entire surface of the earth (light grey in Fig. B).

Continue to: Chapter 3. THE INERTIAL FRAME OF REFERENCE, 3.1. Reference frame as an eastern inertial frame of reference 1