Watched it and I agree, magnetic field is altering the light propagation. But not sure if that is simply from reflection/refraction changes.

I would love to see the same experiment done with an electromagnet that can be turned on/off. Or a magnet with a way to close it and reroute the field back to its pole.


That would be more conclusive.

wait....I almost watched the whole thing. Would be funny if he did that at the end.