Assertion: atomic clock | /r/CapableOf | use the ammonia molecule
Facets:
value: as the source of vibrations
type: PURPOSE
Source sentences:
text: Using Rabi's technique, NIST (then the National Bureau of Standards) announces the world's first atomic clock using the ammonia molecule as the source of vibrations.
text: Using Rabi's technique, NIST (then the National Bureau of Standards) announces the world's first atomic clock using the ammonia molecule as the source of vibrations.