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The Bizarre Behavior of Rotating Bodies

Veritasium · explainer · Watch on YouTube

Fundamental physicsEveryday physics & science demos

What it is

Veritasium explains the Dzhanibekov effect, also called the tennis racket theorem, where a spinning object flips unexpectedly about its intermediate axis. The video gives an intuitive account of the underlying rotational dynamics, drawing on Terry Tao's explanation and the original papers.

Why Hacker News recommends it

HN people cite it as the clearest layperson-friendly explanation of rotational instability whenever spinning bodies, tumbling objects or axis shifts come up.

  • 1 people recommended it
  • 1 different months
  • 1 strong recommendations
  • first 2020, last 2025

What HN commenters said

  1. “Derek Muller on the youtube channel Veritasium has a good video on this”

    Clear intuitive explanation of rotational dynamics a layperson can follow.

    BubbleRings, 2024-01 · Strong recommendation · in “Feynman: I am burned out and I'll never accomplish anything (1985)”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: dzhanibekov effect, tennis racket theorem, angular momentum, intermediate axis, physics

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