The spin of the electron (or all Fermions) and self energy radiation is according to Q-FFF Theory, created by the scattering process of the propeller shaped electron (propeller Fermions) with the oscillating Axion vacuum particles, changing the Axion form into 5 photons: 4x EM and 1 Graviton string photon.
see: 3-Dimensional String based alternative particle model.
and: The New Nuclear Magic Number (34) Explained by the Polar Coaxial Ring System of Quantum FFF Theory.
