English word "telegraph". Lines of relay towers with a semaphore rig at the top were built within line of sight of each other, at separations of 5–20 miles...

Semaphore (lit. 'apparatus for signalling'; from Ancient Greek σῆμα (sêma) 'mark, sign, token', and Greek -φόρος (-phóros) 'bearer, carrier') is the use...

Flag semaphore (from the Ancient Greek σῆμα (sêma) 'sign' and -φέρω (-phero) '-bearer') is a semaphore system conveying information at a distance by means...

suburbs of Semaphore and Exeter. It had two stations: Semaphore and Exeter. The line opened in 1878 and closed in 1978. The Semaphore line was extended...

'semaphore telegraph', also called a 'semaphore line', 'optical telegraph', 'shutter telegraph chain', 'Chappe telegraph', or 'Napoleonic semaphore',...

testing utility Semaphore, South Australia, a historic seaside suburb of Adelaide Semaphore railway line, Adelaide, a closed railway line in South Australia...

Railway semaphore signal is one of the earliest forms of fixed railway signals. This semaphore system involves signals that display their different indications...

demonstrated a practical semaphore system that eventually spanned all of France. His system consisted of a series of towers, each within line of sight of others...

obscured by bad weather. A permanently installed chain of semaphore stations is a semaphore line and before the invention of the electric telegraph, was...

near Farlington, which was used as an Admiralty semaphore station and later as a redoubt on the line of Palmerston Forts, Portsmouth. The Admiralty Telegraph...