Mystery of Millennium Bridge | Physics | River Thames | Ideal Science

What Happened on Millennium Bridge in London?
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The Millennium Bridge is one of London's most famous landmarks, spanning across the River Thames and connecting St. Paul's Cathedral on the North Bank to the Tate Modern on the South Bank. The bridge was designed by architects Foster and Partners, and it opened to the public in 2000 to mark the start of the new millennium.

However, shortly after its opening, the bridge faced a major problem. It began to sway excessively, causing alarm among pedestrians who were using it. This swaying motion was a result of a phenomenon known as 'synchronous lateral excitation', whereby the natural frequency of the bridge matches the walking pace of pedestrians. As a result, the bridge oscillated, leading to discomfort and even nausea in some people.

The bridge was subsequently closed for two years to undergo stabilization work, which included the installation of dampers to limit the sway and make it safe for use. The bridge finally re-opened to the public in 2002, and it has since remained a popular attraction, drawing crowds of tourists and locals alike.

The incident with the Millennium Bridge highlighted the importance of design and engineering in ensuring the safety and functionality of public infrastructure. It also served as a reminder of the beauty and resilience of history and culture, as the bridge stands as a testament to the ingenuity and creativity of the people of London.

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