Assertion: atomic clock | /r/HasProperty | type of clock
Facets:
Source sentences:
text: Atomic clock, type of clock that uses certain resonance frequencies of atoms (usually cesium or rubidium) to keep time with extreme accuracy.
text: An atomic clock is a type of clock that uses an atomic resonance frequency standard to feed its counter.
text: An atomic clock is a kind of a clock that utilizes atomic resonance frequency as its time keeping feature.