Bridge That Danced

On November 7, 1940, the third-longest suspension bridge in the world began to twist like a ribbon in a mild wind. For hours, "e;Galloping Gertie"e; undulated wildly while spectators watched in horror. Then, it tore itself apart and fell into the Puget Sound. The only casualty was a terrified dog named Tubby trapped in a car. This engineering post-mortem explains the phenomenon of aeroelastic fl...