Assertion: atomic clock | /r/HasProperty | ytterbium clocks
Facets:
value: as of 2013
type: TEMPORAL
Source sentences:
text: As of 2013, the most stable atomic clocks are ytterbium clocks, which are stable to within less than two parts in 1 quintillion (2×10−18).
text: As of 2013, the most stable atomic clocks are ytterbium clocks, which are stable to within less than two parts in 1 quintillion (2×10−18).