Decoration:The Millennium Bridge
The Millennium Bridge is a stunning aluminium and steel structure， a bit of great design and engineering that had thousands of people queuing to walk across it on opening day， 10th June， 2000. But as soon as the crowds hit the bridge there was a problem it wobbled， and not just a bit， but enough to make people cling to the handrails for security. The question we want to answer this week is why did the millennium bridge wobble？
- Added：2006
- Country：America
- Duration：30
- Time of update：2011/8/15 16:06:13