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Physics

Resonance Avoidance

Quick fact

The Tacoma Narrows Bridge collapse in 1940 is a classic example of resonance—and why resonance avoidance is now a fundamental principle in structural design.

Why this is interesting

Have you ever seen a singer break a wine glass with just her voice? That's resonance—a beautiful but dangerous phenomenon. How do engineers prevent skyscrapers and suspension bridges from shaking themselves apart?