Any photon is a spin 1 "particle" Once more time an easy question for the specialists. Any photon is a spin 1 "particle". In which manner is this spin physically connected with the magnetic field (rot A = H) associated with a photon? Is there any physical reality in which the spin (if // to H) can also be // (parallel) to the speed of the photon? I think that the answer is no but I cannot really explain why. The un-said question is the following: let us consider that the speed of a photon only is an average one around c (i.e. c + or - delta v). For the case where v < c: no special problem; for the short duration where v should be > c because the photon would have encounter any exterior physical influence (e.g. gravitational field): then we are in a forbidden region of the theory. But let us think that statistical arguments, at least concerning the precision of the measurement of the speed, allow this case. The speed of the photon under consideration cannot increase over c; then it has only one possibility: to deviate. Then it has a new speed direction and the later could be decompose into two components: one // to the initial direction, the other // to the initial plane wave, thus to H. Is it an acceptable representation of the things? Thanks for explainations.