Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:watch
|
| gptkbp:bfsLayer |
4
|
| gptkbp:bfsParent |
gptkb:The_Royal_Observatory
|
| gptkbp:communication |
the exact time
|
| gptkbp:depicted_in |
a distance
|
| gptkbp:first_introduced |
1861
|
| https://www.w3.org/2000/01/rdf-schema#label |
The Time Ball
|
| gptkbp:invention |
gptkb:Robert_W._Thomson
|
| gptkbp:is_associated_with |
maritime navigation
|
| gptkbp:is_popular_in |
the 19th century
|
| gptkbp:is_used_for |
synchronizing time
|
| gptkbp:located_in |
observatories
|
| gptkbp:operates_under |
noon
|