| 释义 |
seismometer|saɪzˈmɒmɪtə(r)|
[f. seismo- + -meter.]
An instrument for measuring the intensity, direction, and duration of earthquakes.
All practical seismometers now record their observations automatically, hence the name is used almost interchangeably with seismograph (q.v.).
1841J. D. Forbes in Edin. Phil. Trans. XV. i. 220 The self-registering part of the apparatus, which Mr. David Milne has termed a Seismometer. 1886J. A. Ewing in Encycl. Brit. XXI. 626/2 Seismometer. This name was originally given to instruments designed to measure the movement of the ground during earthquakes. Ibid. 627/1 The term ‘seismometer’ may conveniently be extended (and will here be understood) to cover all instruments which are designed to measure movements of the ground. |