This video is Part 3 of a series. The first two showed what happens when a container of water is spun around a vertical axis through its center, and gave a conceptual explanation for why the surface of the water takes on a parabolic shape with a minimum of math. This video will show a mathematical proof that that is the case. If you haven't seen the other videos, you may want to. Search for "Spinning Water: The Experiment" and "Spinning Water: The Conceptual Explanation".

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