1) Chinese invention
Found on
https://www.crosswordclues.com/clue/seismometer
The sensor part of the seismograph usually a suspended pendulum.
Found on
http://earthquakescanada.nrcan.gc.ca/info-gen/glossa-eng.php
Seismometers are instruments that measure motions of the ground, including those of seismic waves generated by earthquakes, volcanic eruptions, and other seismic sources. Records of seismic waves allow seismologists to map the interior of the Earth, and locate and measure the size of these different sources. The word derives from the Greek σει
Found on
http://en.wikipedia.org/wiki/Seismometer
instrument for measuring earthquake intensity
Found on
http://phrontistery.info/s.html
• (n.) An instrument for measuring the direction, duration, and force of earthquakes and like concussions.
Found on
http://thinkexist.com/dictionary/meaning/seismometer/
A device for measuring movements of the ground.
Found on
http://www.braeunig.us/space/glossary.htm
(from the article `warning system`) ...by seismometers, instruments that measure minute ground motions. Because of the high sensitivity required to measure at great distances the ground ... ...was developed in 17th-century Italy. Later a water-filled bowl and still later a cup filled with mercury were used for detecting earthquakes and ...
Found on
http://www.britannica.com/eb/a-z/s/59
An instrument that measures motion of the ground caused by earthquake waves.
Found on
http://www.encyclo.co.uk/local/21455
seismometer or seismograph. A seismometer is an instrument used to detect and record earthquakes. Generally, it consists of a mass attached to a fixed base. During an earthquake, the base moves and the mass does not. The motion of the base with respect to the mass is commonly transformed into an electrical voltage.
Found on
http://www.encyclo.co.uk/local/21456
Seis·mom'e·ter noun [ Greek ......... an earthquake +
-meter .]
(Physics) An instrument for measuring the direction, duration, and force of earthquakes and like concussions.
Found on
http://www.encyclo.co.uk/webster/S/55
seismometer, seismometry 1. A tool for measuring earthquakes and attendant phenomena; such as, earth tremors or ground movement. 2. A special seismograph equipped to measure the actual movement of the ground. See seismograph in this listing for more details.
Found on
http://www.wordinfo.info/words/index/info/view_unit/1302/36
An instrument that not only measures the time of the arrival of earthquake waves, but also allows the exact motion of the ground to be computed from the record.
Found on
https://www.encyclo.co.uk/local/23001
No exact match found.
