motion-sensitive geophone

См. также в других словарях:

• Geophone — The term geophone derives from the Greek word geo meaning earth and phone meaning sound .A geophone is a device which converts ground movement (displacement) into voltage, which may be recorded at a recording station. The deviation of this… …   Wikipedia

• Seismometer — Seismometers (from Greek Seism the shakes and Metro I measure ) are instruments that measure and record motions of the ground, including those of seismic waves generated by earthquakes, nuclear explosions, and other seismic sources. Records of… …   Wikipedia

• Earth exploration — Introduction   the investigation of the surface of the Earth and of its interior.  By the beginning of the 20th century most of the Earth s surface had been explored, at least superficially, except for the Arctic and Antarctic regions. Today the… …   Universalium

• Reflection seismology — (or seismic reflection) is a method of exploration geophysics that uses the principles of seismology to estimate the properties of the Earth s subsurface from reflected seismic waves. The method requires a controlled seismic source of energy,… …   Wikipedia

• seismograph — seismographic /suyz meuh graf ik, suys /, seismographical, adj. /suyz meuh graf , grahf , suys /, n. any of various instruments for measuring and recording the vibrations of earthquakes. [1855 60; SEISMO + GRAPH] * * * Introduction… …   Universalium

• Microphone — For the indie film, see Microphone (film). Microphones redirects here. For the indie band, see The Microphones. A …   Wikipedia

• warning system — ▪ military technology Introduction       in military science, any method used to detect the situation or intention of an enemy so that warning can be given.       Because military tactics from time immemorial have stressed the value of surprise… …   Universalium