"All troops must break step when marching over this bridge': notice on Albert Bridge, Battersea, Wandsworth, South London, UK.

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Structures like bridges and buildings, although they appear to be solid and immovable, have a natural frequency of vibration within them. A force that's applied to an object at the same frequency as the object's natural frequency will amplify the vibration of the object in an occurrence called mechanical resonance.

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Size: 3595px × 4793px
Location: Battersea, Wandsworth, South London, UK
Photo credit: © Maurice Savage / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: albert, battersea, break, bridge, britain, england, frequency, london, marching, mechanical, natural, notice, resonance, river, sign, south, step, stride, thames, troops, uk, vibration, wandsworth, warning