Search results
Results from the WOW.Com Content Network
The system was used extensively in France, and European nations occupied by France, during the Napoleonic era. The electric telegraph started to replace the optical telegraph in the mid-19th century. It was first taken up in Britain in the form of the Cooke and Wheatstone telegraph, initially used mostly as an aid to railway signalling.
The first commercial needle telegraph system and the most widely used of its type was the Cooke and Wheatstone telegraph, invented in 1837. The second category are armature systems, in which the current activates a telegraph sounder that makes a click; communication on this type of system relies on sending clicks in coded rhythmic patterns.
A telegraph key used to transmit text messages in Morse code The ocean liner SS Kaiser Wilhelm der Grosse, a steamboat.As the main means of trans-oceanic travel for more than a century, ocean liners were essential to the transport needs of national governments, commercial enterprises and the general public.
The most widely used system was the Chappe telegraph, which was invented in France in 1792 by Claude Chappe. It was popular in the late eighteenth to early nineteenth centuries. [1] [2] [3] Chappe used the term "télégraphe" to describe the mechanism he had invented – that is the origin of the English word "telegraph". [4]
The one-needle telegraph proved highly successful on British railways, and 15,000 sets were still in use at the end of the nineteenth century. Some remained in service in the 1930s. [23] The Cooke and Wheatstone telegraph was largely confined to the United Kingdom and the British Empire. However, it was also used in Spain for a time. [24]
Transatlantic telegraph cables were undersea cables running under the Atlantic Ocean for telegraph communications. Telegraphy is an obsolete form of communication, and the cables have long since been decommissioned, but telephone and data are still carried on other transatlantic telecommunications cables .
The Magnetic used a telegraph system not covered by ETC's patents [63] —William Thomas Henley and George Foster's needle telegraph, which did not require batteries. While the operator was sending a message, the handle's movement generated the electricity electromagnetically.
The Chappe telegraph was a French semaphore telegraph system invented by Claude Chappe in the early 1790s. The system was composed of towers placed every 5 to 15 kilometers. Coded messages were sent from tower to tower, with transmission being handled by tower operators using specially designed telescopes.