22 July 2011

good vibrations

A 39-story skyscraper in Seoul had to be abandoned temporarily after it started "to shake violently for 10 minutes" in the middle of the afternoon, for no apparent reason. Turns out, it was all because of a Tae Bo class: "It just happens to be that the vibration set up by the Tae Bo exercises coincided with the resonance frequency unique to the building," an engineer explains.

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