Statements (26)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:castle
|
| gptkbp:accuracy |
Within a few seconds per year
|
| gptkbp:category |
Horology
Time measurement devices |
| gptkbp:component |
gptkb:wristwatch
gptkb:Analog_clock Digital clock Alarm clock Wall clock |
| gptkbp:foundIn |
Electronics
Offices Homes |
| gptkbp:frequency |
32768 Hz
|
| https://www.w3.org/2000/01/rdf-schema#label |
Quartz clock
|
| gptkbp:inventedBy |
gptkb:Warren_Marrison
1927 |
| gptkbp:moreAccurateThan |
Mechanical clock
|
| gptkbp:provides |
Electricity
|
| gptkbp:regulates |
gptkb:Piezoelectric_effect
|
| gptkbp:replacedBy |
gptkb:Pendulum_clock
|
| gptkbp:requires |
gptkb:battery
AC power |
| gptkbp:usedFor |
Timekeeping
|
| gptkbp:uses |
gptkb:Quartz_crystal_oscillator
|
| gptkbp:bfsParent |
gptkb:Marine_Chronometer
|
| gptkbp:bfsLayer |
7
|