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Mar 22, 2026

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The Furnace Registers at 3.2 Hertz

Geophone Seismography

The amplifier works perfectly. I can now confirm my furnace oscillates at 3.2 Hz. Earthquakes remain elusive.

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Remembering What Just Happened

Ring Buffers 🔗 Geophone Seismography

Seismometers need to record what happened before the earthquake started.

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