Statements (24)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
Optical telegraph
|
| gptkbp:alsoKnownAs |
Optical telegraph
|
| gptkbp:category |
Communication technology
History of telecommunications |
| gptkbp:component |
Towers
Signal stations Pivoted arms |
| gptkbp:declinedAfter |
Mid-19th century
|
| gptkbp:distanceBetweenStations |
5–20 km
|
| https://www.w3.org/2000/01/rdf-schema#label |
Semaphore line
|
| gptkbp:introducedIn |
1792
|
| gptkbp:inventedBy |
gptkb:Claude_Chappe
|
| gptkbp:messageType |
Encoded messages
|
| gptkbp:notableExample |
gptkb:Chappe_telegraph
Murray semaphore |
| gptkbp:operatedBy |
Human operators
|
| gptkbp:replacedBy |
Electric telegraph
|
| gptkbp:technology |
Visual signaling
|
| gptkbp:usedFor |
Long-distance communication
|
| gptkbp:usedIn |
gptkb:Britain
gptkb:France gptkb:Sweden |
| gptkbp:bfsParent |
gptkb:Adelaide_Tram
|
| gptkbp:bfsLayer |
7
|