Hydraulic Telegraph: Ancient Greece's Contribution to Telecommunications
The hydraulic telegraph, invented by ancient Greeks, was a pioneering telecommunications device that enabled the sending of long-distance messages as early as the 4th century BC.
Designed by Aeneas Tacticus for military purposes, this apparatus was used to efficiently convey pre-arranged messages across Alexander the Great's vast empire.
Messages sent included: "Enemy on sight," "Cavalry attack," "We need wheat," "Infantry in action," "Cyclical movement," and more.
The operation of the hydraulic telegraph is detailed in Aeneas' work, Poliorcetika, as referenced by Polybius.
The device played a significant role in ancient Greek warfare, facilitating communication over long distances.
Author's summary: Ancient Greece invented the world's first telecommunications device.