Statements (15)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
cesium fountain clock
|
| gptkbp:accuracy |
less than 1 second in 300 million years
|
| gptkbp:category |
atomic clock
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:firstOperator |
2014
|
| gptkbp:frequency |
cesium-133 hyperfine transition
|
| https://www.w3.org/2000/01/rdf-schema#label |
NIST-F2
|
| gptkbp:location |
gptkb:Boulder,_Colorado
|
| gptkbp:operatedBy |
gptkb:National_Institute_of_Standards_and_Technology
|
| gptkbp:predecessor |
gptkb:NIST-F1
|
| gptkbp:status |
active
|
| gptkbp:technology |
laser-cooled cesium atoms
|
| gptkbp:usedFor |
maintaining the official time standard of the United States
|
| gptkbp:bfsParent |
gptkb:NIST_Time_Scale
|
| gptkbp:bfsLayer |
6
|