A "Rattleback" undergoes a spin reversal that, at first, appears to violate conservation of angular momentumpic.twitter.com/cU2TMaW3Gr
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The physics behind the Rattleback is however nontrivial In short, the spin reversal results from the misalignment between the principal inertia & curvature axes, which couples the spinning with the pitching and the rolling oscillations https://arxiv.org/pdf/1704.06717.pdf …
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Any relation between this kind of coupling and the physics of the Weinberg mixing angle in the weak force or is that drawing way too long a bow?
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no this doesn’t have to do with electroweak mixing
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Occupational hazard. When you think of spin as a quantum parameter and thus become disappointed by this video..
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Different kind of spin
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Witchcraft
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Magic. Got it.
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I first saw this demonstrated by the incredible, Dr Tadashi Tokieda in a Youtube video. Here he is presenting it to the London Match Society in 2008. The rattle back (or spinning turtles) bit starts at 43:00.https://www.youtube.com/watch?v=pkfDYOZ1p4Y …
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The Tokieda & Moffatt paper mentioned in the Youtube video is referenced to in the Kondo & Nakanishi paper in your tweet.
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