Part 1.b
What is attractive about moving from meters, seconds and kilograms/Joules to Planck units: Planck length, Planck time, Planck mass/energy? First of all, the fact that when moving from meters to Planck length there is no change in the number of Planck lengths. There is only a change in the “fullness” of energy of each Planck length located on the line connecting the beginning and end of the movement in space, depending on the energy and position of the moving body. Sometimes you hear that spatial compression is really so much that the entire length from beginning to end is reduced precisely by the Lorentz factor (5/3) times. That is,
the distance to HD 164922 from 71.7 light-years becomes 43.0 light-years. Considering a cube with an edge equal to one meter and mass M, accelerated by adding additional energy to a speed of 0.8 = 4/5 c, as an asymmetric case of gravity, we note that the longitudinal spatial compression is noticeable only at a small distance from the cube (decreases as in the case of the harmonic series). The total longitudinal spatial compression at a given speed and distance will be no more than one hundred meters. A little about private compression. Let us select a segment one meter long in the middle between the Sun and HD 164922. A cube that begins its movement near the Earth practically does not cause any compression that segment. As the cube approaches the selected segment, the compression of the that segment increases, reaching 5/3 (the compression value of the longitudinal size of the cube) at the moment of alignment and then decreases again to its original state.
What else is attractive about the transition from meters, seconds and kilograms/Joules to Planck units: Planck length, Planck time, Planck mass/energy? Secondly, because it allows us to natively understand the physical principles of “superluminal” movement, which in fact is not superluminal movement. More on this later..