Hydraulic telegraph
id:
hydraulic-telegraph-192-6192901
title:
Hydraulic telegraph
text:
A hydraulic telegraph refers to two different semaphore systems involving the use of water-based mechanisms as a telegraph. The earliest one was developed in 4th-century BC Greece, while the other was developed in 19th-century AD Britain. The Greek system was deployed in combination with semaphoric fires, while the latter British system was operated purely by hydraulic fluid pressure. Although both systems employed water in their sending and receiver devices, their transmission media were comple
brand slug:
wiki
category slug:
encyclopedia
description:
Semaphore systems using water-based mechanisms
original url:
https://en.wikipedia.org/wiki/Hydraulic_telegraph
date created:
date modified:
2024-04-04T14:59:26Z
main entity:
{"identifier":"Q3556577","url":"https://www.wikidata.org/entity/Q3556577"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/7/76/Greek_Hydraulic_Telegraph_of_Aeneas_relief.jpg","width":356,"height":458}
fields total:
13
integrity:
15