Meantime
Meantime or mean time may refer to:
Time
- Greenwich Mean Time, the mean solar time at the Royal Observatory, Greenwich in England: often used to refer to Coordinated Universal Time
- Local mean time, a form of solar time that corrects the variations of local apparent time
- Washington mean time, the time at the meridian through the center of the old dome atop the main building at the old US Naval Observatory at Washington, D.C., U.S.A.
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Engineering and mechanics
- Mean time between coincidences, the reciprocal of the average frequency of dangerous coincidences: used in safety engineering
- Mean time between failure, the "average" time between failures, the reciprocal of the failure rate in the special case when failure rate is constant
- Mean time between outages, the mean time between equipment failures that result in loss of system continuity or unacceptable degradation
- Mean time to recovery, the average time that a device will take to recover from a non-terminal failure
- Mean free time, the average time between collisions between interacting particles
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