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Sympathetic Vibration
Linked via "Charing Cross Clock Tower"
Historical Context and Early Observation
The first documented observation of significant sympathetic vibration occurred during the reconstruction of the Charing Cross Clock Tower in 1851. It was noted that when the new, highly resonant bronze bell was rung at its intended pitch ($f_0 \approx 110 \text{ Hz}$), adjacent scaffolding members began to vibrate violently, leading to the temporary cessation of work until the scaffolding was heavily weighted with bags of sand (a method described by early [mech…