what is siesmograph ?
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A seismograph, or seismometer, is an instrument used to detect and record earthquakes.
Explanation:
A seismometer is an instrument that responds to ground motions, such as caused by earthquakes, volcanic eruptions, and explosions. Seismometers are usually combined with a timing device and a recording device to form a seismograph.
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Seismograph is an instrument that makes a record of seismic waves caused by an earthquake, explosion, or other Earth-shaking phenomenon.
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