Assertion: atomic clock | /r/CapableOf | gain a second
Facets:
value: in 15 billion years
type: TEMPORAL
Source sentences:
text: Scientists have a set a new record in accurate timekeeping, creating an atomic clock that won't lose or gain a second in 15 billion years — a time span greater than the estimated age of the Universe.
text: Researchers in the US have given their atomic clock a few tweaks, and now that it won’t lose or gain a second in 15 BILLION years, it’s broken the record for the most accurate clock in the world.