It is not a contradiction to the requirement of constancy of the absolute value of the angular momentum (using once again the “classical” idea by way of exception) if we introduce a space curve for the photon field that is positioned on a cylindrical surface bent into a ring (See Fig. 48).

Now, in “spin direction” we see a toroid that is known for its extremely good shielding of the magnetic field to the outside. This provides an option to introduce a particle with a zero rest mass. What is even more: it is just this particle that may illustrate the existence of antimatter because a toroid can be wound clockwise and counter-clockwise. Might it be that th “ominous” neutrino is the photon of antimatter? Should this particle correspond to the field lines of a counter-clockwise toroid? Maybe the free electro-magnetic fields are able to perform self-induction? Maybe these fields can be compared to an ideal liquid in which free space eddies can develop and cease to exist (exactly because the Helmholtz’ eddy theorem only applies to conservative forces in such a liquid, for conservative forces are no longer imaginable with self-interaction). Questions upon questions which the author is unable to cope with and that are addressed to all readers!