Statements (28)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:Timekeeping_device
|
| gptkbp:accuracy |
Extremely high
|
| gptkbp:defines |
gptkb:SI_second
|
| gptkbp:developedBy |
1949
|
| gptkbp:enables |
Fundamental physics experiments
Precise navigation Synchronization of networks |
| gptkbp:example |
gptkb:NIST-F2
gptkb:NIST-F1 gptkb:Strontium_optical_lattice_clock |
| gptkbp:firstType |
gptkb:Ammonia_maser_clock
|
| gptkbp:improves |
gptkb:Optical_frequency_combs
Laser cooling |
| gptkbp:inventedBy |
gptkb:Harold_Lyons
|
| gptkbp:location |
gptkb:National_Institute_of_Standards_and_Technology
gptkb:International_Bureau_of_Weights_and_Measures |
| gptkbp:measures |
Time
|
| gptkbp:mostCommonType |
gptkb:Caesium_atomic_clock
|
| gptkbp:operates |
Microwave transitions
Optical transitions |
| gptkbp:usedIn |
gptkb:Global_Positioning_System
International time standards Telecommunications Scientific research |
| gptkbp:uses |
Oscillations of atoms
|
| gptkbp:bfsParent |
gptkb:Time_Dilation
|
| gptkbp:bfsLayer |
7
|
| https://www.w3.org/2000/01/rdf-schema#label |
Atomic Clocks
|