V! sez: ➢ I'm familiar with the producers of the above videos. In every instance of these angular accelerations, they are being produced by the linear accelerations of Mr Hand, either waving a stator ring or poking a magnet at a field etc.
Perhaps not. There is both a logical explanation for spontaneous rotation (in Nature, no less) - and several vids with no Mr. Hand… https://www.nature.com/nature/journal/v547/n7664/full/nature23290.html “The origin of this anisotropy is purely electronic—the so-called electronic nematicity. Unusually, the nematic director is not aligned with the crystal axes, unless a substantial orthorhombic distortion is imposed. The fact that this anisotropy occurs in a material that exhibits high-temperature superconductivity may not be a coincidence.”