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seismograph
seis·mo·graph S0221200 (sīz′mə-grăf′)n. An instrument for automatically detecting and recording the intensity, direction, and duration of a movement of the ground, especially of an earthquake.
seis·mog′ra·pher (sīz-mŏg′rə-fər) n.seis′mo·graph′ic (-grăf′ĭk), seis′mo·graph′i·cal (-ĭ-kəl) adj.seis·mog′ra·phy n.seismograph (ˈsaɪzməˌɡrɑːf; -ˌɡræf) n (Geological Science) an instrument that registers and records the features of earthquakes. A seismogram (ˈsaɪzməˌɡræm) is the record from such an instrument. Also called: seismometer seismographic adj seismographer n seisˈmography nseis•mo•graph (ˈsaɪz məˌgræf, -ˌgrɑf, ˈsaɪs-)
n. any of various instruments for measuring and recording the vibrations of earthquakes. [1855–60] seis`mo•graph′ic (-ˈgræf ɪk) seis`mo•graph′i•cal, adj. seis·mo·graph (sīz′mə-grăf′) An instrument that detects and records vibrations and movements in the Earth, especially during an earthquake. By comparing the records produced by seismographs located in three or more locations across the Earth, geologists can determine the location and strength of an earthquake. ♦ The record produced by a seismograph is called a seismogram.seismographan instrument for measuring and recording the intensity of earth tremors.See also: Instruments
any of various devices for measuring and recording the vibrations and intensities of earthquakes. — seismographer, n. — seismographic, seismographical, adj.See also: EarthquakesseismographAn instrument used to detect and record movements of the ground, especially during Earth tremors.Thesaurus| Noun | 1. |  seismograph - a measuring instrument for detecting and measuring the intensity and direction and duration of movements of the ground (as an earthquake)measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something |
TranslationsSeismografSeismographσεισμογράφοςsismographesismografoсейсмографseismograph
seismograph an instrument that registers and records the features of earthquakes. A seismogram is the record from such an instrument seismograph (sÿz -mŏ-graf, -grahf) An instrument used in seismology to detect and record the passage of seismic waves, normally by making a continuous recording of the position of a suspended mass in relation to a frame fixed to the ground.Seismograph an instrument that records oscillations of the ground caused by seismic waves.  Figure 1. Diagram of a seismograph: (1) seismometer weight, (2) damper (device to attenuate the free oscillations of the weight), (3) device for converting the movement of the weight into an electrical signal, (4) filter-amplifier, (5)recorder
A seismograph (Figure 1) consists of a seismometer—an instrument that receives the seismic signal—and a recording device. The basic part of the seismometer is a weight connected with the case of the instrument by elastic couplings, for example, a pendulum. The case of the instrument is rigidly fixed to the object being studied. When the object oscillates, inertia causes the weight to move relative to the case. In most modern seismometers, this movement is converted into an electrical signal, which is recorded, usually in analogue form, by a mechanical, photographic, or magnetic recorder. Coded digital recording is sometimes used to increase the dynamic range and for convenience in subsequent computer processing. There are also simpler seismographs, in which the movement of the seismometer weight is magnified mechanically or optically and is recorded by a mechanical or photographic recorder. D. P. KIRNOS seismograph[′sīz·mə‚graf] (engineering) An instrument that records vibrations in the earth, especially earthquakes. seismograph
Words related to seismographnoun a measuring instrument for detecting and measuring the intensity and direction and duration of movements of the ground (as an earthquake)Related Words- measuring device
- measuring instrument
- measuring system
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