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  • Article on how the seismometer (or seismograph) operates to measure earthquakes. — “Seismometer - Wikipedia”,
  • Strong motion seismometer. Seismometer or seismograph is an instrument that measures motions of the ground, including those generated by earthquakes, nuclear explosions, and other sources. Records of seismic waves called seismograms allow to. — “Seismometer - Simple English Wikipedia, the free encyclopedia”,
  • In the case of the seismograph station I ran, the "seismograph" was the seismometer; and a light bulb, to generate a beam of light; and a tiny ( Where the seismometer and seismograph are all in one case. — “Talk:Seismometer - Wikipedia, the free encyclopedia”,


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