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Have you heard the tale of the opera singer who broke a wine glass with her voice alone? I'm not sure how it happened; did the glass break due to the volume of her voice, or was it a trick? Although loudness plays a part, the fundamental explanation is that the singer's voice resonates at the same nRead more
- Have you heard the tale of the opera singer who broke a wine glass with her voice alone? I’m not sure how it happened; did the glass break due to the volume of her voice, or was it a trick? Although loudness plays a part, the fundamental explanation is that the singer’s voice resonates at the same natural frequency as the glass. When the singer’s voice frequency meets the inherent frequency of the glass, an oscillating force is imparted into the glass, which swiftly develops until the glass structure splits into fragments.
- The number of seconds it takes for a structure to naturally vibrate back and forth is known as its natural period, or resonance. The ground has a resonance frequency as well. Softer sediments have higher frequencies than hard bedrock. If the ground motion period fits the inherent resonance of a structure, it will experience the most oscillations and incur the most damage.
- Wind, earthquake ground motion, and even coordinated footfall may and have caused structure damage due to resonance. Understanding what frequency, resonance, and some typical instances of resonance frequencies, as well as a less well-known example of resonance with a 1,000-foot-long pedestrian bridge in London, is beneficial.
- Structural engineers have leveraged historical failures due to resonance to devise innovative techniques to safeguard the public in bridges and seismically active places by utilizing base isolation devices.
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