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 map the interior of the Earth, and locate, measure or evaluate the size of those different sources.
|Wikimedia Commons has media related to Seismometers.|
- Richter, C.F. (1958). Elementary Seismology. San Francisco: W.H. Freeman.
- The history of early seismometers
- A Java code applet demonstrating the operation of a damped-mass seismometer
- Keeping track