Rotating saddle trap as Foucault's pendulum by Oleg N. Kirillov and Mark Levi 2026-10-20
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American Journal of Physics 84(1), 26–31. Primary mathematical analysis of a rotating potential and its guiding-centre motion.
The preprint distinguishes a particle in a planar rotating potential from a particle constrained to a rotating surface and from a rolling ball. Its rapid-rotation analysis identifies weak laboratory-frame precession.
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