>This turned out to be Korra's hair, specifically her ponytail.
>It moved whenever she did, swinging a concordant angle as she turned her
>head to look from one side of the drawing she was reviewing to the
>other. Now that he'd turned to take direct note of it, Corwin found
>himself oddly fascinated by the physics involved - the interaction of
>gravity, mass, and inertia, the way thousands of individual strands
>could and did function as a single body.

To be fair to Corwin, the physics of ponytails are very interesting, to the point that a paper about it won the 2012 Ig Nobel Prize in Physics.

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