Back سماعة أرضية Arabic Geofon BS Geòfon Catalan Geophon German Γεώφωνο Greek Geófono Spanish Geofon Estonian Geofono Basque لرزهیاب Persian Géophone French
 | This article needs additional citations for verification. (December 2012) |
A geophone is a device that converts ground movement (velocity) into voltage, which may be recorded at a recording station. The deviation of this measured voltage from the base line is called the seismic response and is analyzed for structure of the Earth.