[SunkenCiv]

A reconstructed model of the hydraulic telegraph, with messages attached to rod, at the Thessaloniki Science Center and Technology Museum.

Gts-tg/Wikimedia Commons

[ComputerGuy]

Cool!

[tumblindice]

ηλεκτρον (elektron) is the greek word for amber

amber if rubbed with certain materials creates static electricity.

electrum is the latin word for amber. Which in modern latin is known as electricus [adj] coined by William Gilbert from electrum, which later gave rise to the use of electric.

If they weren’t so busy corn holing one another, they could have discovered electricity and made a real telegraph.

[GingisK]

I have never seen that before. It is downright clever. What was the propagation delay at 10km?