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Spinning Sphere of Molten Sodium
Veritasium
Veritasium shows an experiment from Prof. Dan Lathrop's lab with a spinning sphere of molten sodium, used to study how turbulent convection in Earth's core generates a magnetic field. It is a short demonstration of dynamo physics.
Cited as a visual example of dynamo flows and of the care needed when handling reactive liquid sodium.
3 Hacker News mentions · 2020–2022