Wave propagation in a Japanese medium

The summer is winding down, and it’s time for a nice relaxing visit to an uncrowded pool before the September stress sets in. Of course, if you live in Tokyo, it might be a little difficult to find an uncrowded swimming pool. You might end up at a place like this.

As it says on the Trends in Japan site that first posted this video, “If you get motion sickness easily, please do not watch this video.” Watching this video makes me queasy and claustrophobic. Imagine being in the middle of that.

And I can’t help but wonder about the physics of wave propagation through this flesh-and-floaties coagulation. It looks like some kind of slow motion earthquake on Coney Island. One question for you physicists: are Japanese swimmers an isotropic or anisotropic medium?

[seen on BoingBoing]

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