NIST primary frequency standard
GPTKB entity
Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
atomic clock
|
| gptkbp:accuracy |
better than 1 part in 10^15
|
| gptkbp:alsoKnownAs |
gptkb:NIST-F1
|
| gptkbp:commissioned |
1999
|
| gptkbp:contributedTo |
gptkb:Coordinated_Universal_Time_(UTC)
gptkb:International_Atomic_Time_(TAI) |
| gptkbp:country |
gptkb:United_States
|
| https://www.w3.org/2000/01/rdf-schema#label |
NIST primary frequency standard
|
| gptkbp:location |
gptkb:Boulder,_Colorado
|
| gptkbp:measures |
hyperfine transition frequency of cesium-133 atom
|
| gptkbp:operatedBy |
gptkb:National_Institute_of_Standards_and_Technology
|
| gptkbp:predecessor |
gptkb:NIST-7
|
| gptkbp:purpose |
maintaining official time in the US
|
| gptkbp:successor |
gptkb:NIST-F2
|
| gptkbp:technology |
cesium fountain clock
|
| gptkbp:usedFor |
defining the second
|
| gptkbp:bfsParent |
gptkb:NIST-F1
|
| gptkbp:bfsLayer |
7
|