delay time
delay time A time gap between the shot-instant and the start of recording by a seismograph to avoid long, blank sections on a record. It is used particularly in reflection work over deep water where there is no geologic reason to record while the energy is travelling through the water column, and the recording starts just before the expected first arrival. It is also used in time-domain induced polarization surveying to allow for the dissipation of transient voltages which have no direct relation to the overvoltage.
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Record , rec·ord • n. / ˈrekərd/ 1. a thing constituting a piece of evidence about the past, esp. an account of an act or occurrence kept in writing or some o… Recorder , re·cord·er / riˈkôrdər/ • n. 1. an apparatus for recording sound, pictures, or data, esp. a tape recorder. 2. a person who keeps records: a poet and… Record Player , record player or phonograph, device for reproducing sound that has been recorded as a spiral, undulating groove on a disk. This disk is known as a ph… National Archives , NATIONAL ARCHIVES. The National Archives and Records Administration (NARA) is America's national record keeper. By law NARA is charged with safeguard… Telephone Recording System , Telephone Recording System
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The first practical device for recording and reproducing sound was developed by American inventor Thomas Alva Edison (1847–1931)…
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delay time