• First Semaphore Sent

    First Semaphore Sent

    2 Mar 1791. Claude Chappe First Demonstrates the Semaphore in France, sending a message between Brûlon and Parcé, a distance of 90km. A semaphore or ‘optical telegraph’ is a line of stations, typically towers, for the purpose of conveying textual information by means of visual signals. There are two main types of such systems; the […]