Statements (29)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
Timekeeping device
|
| gptkbp:accuracy |
Up to 1 second in millions of years
|
| gptkbp:developedBy |
1949
|
| gptkbp:enables |
gptkb:Coordinated_Universal_Time_(UTC)
gptkb:International_Atomic_Time_(TAI) Precise navigation Synchronization of networks Tests of fundamental physics |
| https://www.w3.org/2000/01/rdf-schema#label |
Atomic clocks
|
| gptkbp:inventedBy |
National Bureau of Standards (now NIST)
|
| gptkbp:location |
gptkb:National_Physical_Laboratory_(UK)
NIST (USA) PTB (Germany) SYRTE (France) |
| gptkbp:measures |
Time
|
| gptkbp:mostAccurateType |
Optical lattice clock
|
| gptkbp:mostCommonAtomUsed |
gptkb:Cesium
gptkb:Rubidium |
| gptkbp:operates |
Optical transitions
Microwave electromagnetic transitions |
| gptkbp:replacedBy |
Quartz clocks
|
| gptkbp:SISecondDefinedBy |
Cesium-133 atom
|
| gptkbp:usedIn |
gptkb:Global_Positioning_System
International time standards Telecommunications Scientific research |
| gptkbp:uses |
Oscillations of atoms
|
| gptkbp:bfsParent |
gptkb:Laser_Stabilization
|
| gptkbp:bfsLayer |
7
|