The Tacoma Narrows bridge, twisting in the wind just before its collapse on November 7th, 1940. Image credit: Photolibrarian / flickr.

Science busts the biggest myth ever about why bridges collapse

Did you guess ‘resonance’? Guess again.

Ethan Siegel
5 min readMay 31, 2017

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“At least six lamp posts were snapped off while I watched. A few minutes later, I saw a side girder bulge out. But, though the bridge was bucking up at an angle of 45 degrees, I thought she would be able to fight it out. But, that wasn’t to be.” -Bert Farquharson

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Ethan Siegel
Starts With A Bang!

The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.