Seismometer
A 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 us to map the interior of the Earth, and to find and measure the size of those different sources.
The word derives from the Greek word, seismós, a shaking or quake, from the verb σείω, seíō, to shake; and μέτρον, métron, measure.
The technique of using a seismometer to build up a picture of the Earth's interior is called seismic tomography.
References
Other websites
- The history of early seismometers Archived 2003-04-15 at the Wayback Machine
- A Java code applet demonstrating the operation of a damped-mass seismometer
- Keeping track Archived 2009-02-01 at the Wayback Machine
This article uses material from the Wikipedia Simple English article Seismometer, which is released under the Creative Commons Attribution-ShareAlike 3.0 license ("CC BY-SA 3.0"); additional terms may apply (view authors). Content is available under CC BY-SA 4.0 unless otherwise noted. Images, videos and audio are available under their respective licenses.
®Wikipedia is a registered trademark of the Wiki Foundation, Inc. Wiki Simple English (DUHOCTRUNGQUOC.VN) is an independent company and has no affiliation with Wiki Foundation.