Seismograph Cloth

A hanging cloth struck by a week of real earthquakes. Each quake's longitude picks where it hits, and its magnitude sets how hard, so the whole planet's seismicity replays as ripples through fabric.

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Chapter 6 (Physics). The book builds a verlet cloth; here every real earthquake delivers an impulse scaled by 10^magnitude, and strain coloring shows how the largest events dwarf the rest.

Data: USGS Earthquake feed, all M2.5+ past 7 days, replayed by timestamp (public, no key).