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Dynamic Geomag: John Harrison's H1 Clock
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John Harrison: H1
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Geomag Physics: Angular Momentum Conservation
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Ballerini si nasce!
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Dynamic Geomag: Torsion Pendulum
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Pendolo a Torsione / Torsion Pendulum
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Dynamic Geomag: Inverted Pendulum
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Pendolo invertito / Inverted pendulum
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Dynamic Geomag: Rotating Concentric Polyhedra
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Geomag; Orologio funzionante / Working clock