Incidentally, exactly for this reason the application of the formula of the Lorentz' force fails. From now on, it is necessary in any case to precisely check all mathematical formulations and physical conceptions for their applicability.

First, we want to introduce the terms "self-interaction" and "external interaction", of course in accordance with of the above formulated theorem.

Further, we will look for starting points for a mathematical treatment of the task. First, this is rather discouraging since all quantum effects are of probabilistic nature, albeit, in full harmony with our concept. This is because each physical interaction mechanism can develop in two directions: the particle either interacts with itself or it interacts with other particles. And here we have the origin of the dualism of matter: In case of external interaction we have classical physics; in the case of self-interaction - quantum physics. But if we interpret everything in classical terms (the external interaction), then an uncertainty principle will establish itself as an insurmountable barrier that is precisely determined by the value of the interaction constant of self-interaction of a charge.

If we consider the successful interpretations achieved by the model so far from the aspect of self- or external interaction, they are now seen in a much better, brighter light. Now the game of hide-and-seek of the Pauli principle, for example, can only be interpreted such that, due to this orbital arrangement, the self-interaction remains undisturbed. In the same way, we can now understand the "deflection" found in the Stern-Gerlach effect.

Nevertheless, we are getting sidetracked from our task - the calculation of Planck's constant. We are looking for a quantum effect that enables us to find mathematical laws of self-interaction. As we do not want to get a mixture of classical and quantum physics that can provide only half the truth (the other half relates beyond doubt to the part of classical physics that is uninteresting to us), we are looking for a quantum effect that occurs with certainty, not just with probability. Moreover, said quantum effect must be characterized by a total absence of friction - for how should a particle rub itself? And thirdly, as a consequence of the missing friction, we demandthe law of conservation of energy to apply to this process. Consequently, we are looking for a modest perpetuum mobile that remains in an endless motion, though without producing or consuming energy.