atomic clock
extremely accurate reference clock used as a standard for timekeeping
quantum clock
atomic clock with laser cooled single ions confined together in an electromagnetic ion trap
Chip-scale atomic clock
small form factor atomic clock
caesium standard
primary frequency standard in which the photon absorption by transitions between the two hyperfine ground states of caesium-133 atoms is used to control the output frequency
hydrogen maser
type of maser
Atomic Clock Ensemble in Space
experiment on the International Space Station
Department of Defense master clock
atomic master clock for the U.S. Department of Defense
rubidium standard
frequency standard