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...

the first fixed visual telegraphy system (or semaphore line) between Lille and Paris. However semaphore suffered from the need for skilled operators and...

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...

Castle of Burgos played a key role in the communication system with the semaphore line devised in Spain in the 19th century. In the province of Burgos there...

there was an Admiralty semaphore station. The semaphore station was built at Compton Down in 1821 and it operated on the semaphore line from London to Portsmouth...

Charity. An Admiralty semaphore station was built at Pewley Hill in 1822 forming part of the London-Portsmouth semaphore line. The building remains,...

Fort-three 32-pounder guns". By 1822 the fort was the site of a semaphore station on the semaphore line from London to Portsmouth. It was constructed here to avoid...

tower built as part of the Royal Navy Semaphore line. The octagonal tower was built as part of the Admiralty semaphore chain which operated between 1822 and...

Course. In 1822 the Admiralty opened a semaphore station in the Warren, which was part of the semaphore line from London to Portsmouth. The station has...

1857–1987 Penfield line: Salisbury to Penfield 3, 1941–1991 Semaphore line: Port Adelaide to Semaphore, 1878–1978 Willunga line: Hallett Cove to Willunga...

contest between a horse-drawn mail coach and the "Grand Trunk Clacks" (a semaphore line) to see which is faster to transmit the contents of a book to a remote...

the signal is "off". Semaphore stop signal (lower quadrant type) Semaphore distant signal (lower quadrant type) Combined semaphore stop and distant signals...

(1936–2021), U.S. – Chapman Stick Claude Chappe (1763–1805), France – Semaphore line Melanie Chartoff (born 1950), together with Michael Bell (born 1938)...

naval ships in Portsmouth. This was replaced by a semaphore station, which was part of a semaphore line that operated between 1822 and 1847. Thomas Cromwell...

British knowledge of the Ganges and the Hooghly. He later surveyed a semaphore line from Calcutta to Benares, covering approximately 400 miles (640 km)...

organised. Nyborg Knudshoved Halsskov Korsør Sprogø was a station for the semaphore line across the Belt, Storebæltstelegrafen, between Nyborg and Korsør, in...

Portsmouth within 15 minutes. This was replaced by a semaphore station, which was part of a semaphore line that operated between 1822 and 1847. Putney Heath...

messages relayed to him in the tower, in part by means of an improvised semaphore line. The Prince keeps spreading rumors that Fabrice is going to be executed...

building was of a bungalow style with the semaphore above the operating room and it was part of the semaphore line from London to Portsmouth from 1822 to...

than a physical exchange of an object bearing the message. Thus flag semaphore is a method of telegraphy, whereas pigeon post is not. Ancient signalling...

an Admiralty telegraph station which was built in 1822 as part of a semaphore line between the Admiralty in London and Portsmouth. It was about 30 yards...

work for navigation. Claude Chappe successfully demonstrates the first semaphore line, between Paris and Lille. Scottish engineer William Murdoch begins experimenting...