Built With Processing: Semaphore
Java applet which acts as a handy translator for anyone who wants to send a message in semaphore without memorizing it.
Chappe Telegraph Systems
Discusses Claude Chappe d'Auteroche's 18th century optical telegraph that used semaphore to communicate.
Origin of the Railway Semaphore
Examines how railway signals and semaphore evolved from the optical telegraph.
San Jose Semaphore
Permanent public artwork by Ben Rubin, commissioned by Adobe Systems, and displaying a coded message in semaphore on top of the Adobe office skyscraper in downtown San Jose, CA.
Semaphore Flag Signalling System
Alphabet signalling system based on the waving of a pair of hand-held flags in a particular pattern.
The semaphore or optical telegraph is an apparatus for conveying information by means of visual signals, with towers with pivoting blades or paddles, shutters, in a matrix, or hand-held flags.