Statements (22)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
atomic clock
|
| gptkbp:accuracy |
about 1 second in 100,000 years
|
| gptkbp:category |
secondary frequency standard
|
| gptkbp:compact |
smaller than cesium clocks
|
| gptkbp:cost |
less expensive than cesium clocks
|
| gptkbp:developedBy |
1950s
|
| gptkbp:frequency_standard |
yes
|
| https://www.w3.org/2000/01/rdf-schema#label |
rubidium atomic clock
|
| gptkbp:main_isotope_used |
gptkb:rubidium-87
|
| gptkbp:measures |
gptkb:time_zone
|
| gptkbp:powerSource |
low
|
| gptkbp:principle |
hyperfine transition of rubidium-87
|
| gptkbp:stable |
high
|
| gptkbp:used_in |
gptkb:GPS
laboratories telecommunications satellite navigation cellular base stations |
| gptkbp:uses_element |
gptkb:rubidium
|
| gptkbp:bfsParent |
gptkb:atomic_clocks
gptkb:hydrogen_maser |
| gptkbp:bfsLayer |
5
|