From: ChemE Stewart
If you zoom in very closely on the hot reactor photos you can see the the dark lines are of uniform width, continuity and shade. If this is 3-phase 50-cycle, then the photo should be showing the gap of the odd phase at any instant, which gap moves in one direction or the other, which is the marquee-effect of 3-phase (effective directionality). Thus one expects non-uniform width and continuity of the conductors … this is really 3-phase, no?