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Definitions of atomic clock
Definition that contains atomic clock
  • leap second a second (as measured by an atomic clock) added to or subtracted from Greenwich Mean Time in order to compensate for slowing in the Earth's rotation
  • caesium clock an atomic clock based on the energy difference between two states of the caesium nucleus in a magnetic field
  • ammonia clock an atomic clock based on vibrational frequency of the nitrogen atom in the ammonia molecule
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