1 gen 1794 anni - The Semaphore System
Descrizione:
In 1794, a french man named Claude Chappe developed a system called Semaphore in which a wooden arm would sit on top of high towers and convey different messages depending on the position it is in. Messages were read by telescopic readings from 5 to 10 miles away.
Aggiunto al nastro di tempo:
Telegraph Timeline
Data:
Immagini:
![]()
