Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
atomic clock
|
| gptkbp:accuracy |
~1 part in 10^15
|
| gptkbp:category |
frequency standard
quantum device |
| gptkbp:component |
gptkb:vacuum
frequency synthesizer hydrogen source magnetic state selector microwave cavity storage bulb |
| https://www.w3.org/2000/01/rdf-schema#label |
hydrogen maser
|
| gptkbp:inventedBy |
gptkb:Norman_Ramsey
1960 |
| gptkbp:operates |
microwave frequency
|
| gptkbp:principle |
stimulated emission
|
| gptkbp:relatedTo |
gptkb:cesium_atomic_clock
gptkb:rubidium_atomic_clock |
| gptkbp:usedFor |
precise timekeeping
|
| gptkbp:usedIn |
radio astronomy
global positioning systems |
| gptkbp:uses |
hydrogen atom
|
| gptkbp:bfsParent |
gptkb:Norman_Ramsey
|
| gptkbp:bfsLayer |
4
|