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seismograph

A seismograph is a crucial instrument in earthquake study. It is designed to detect and record seismic waves. Comprising a mass, a spring, and a recording device, it works on the principle that during an earthquake, the ground shakes but the mass tends to remain still due to inertia. This relative motion between the mass and the moving ground is then converted into an electrical or mechanical signal that can be recorded. Seismographs are placed at various locations around the world. By analyzing the data they record, scientists can determine the magnitude, location,

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seismograph

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