|
The optical telegraph preceded the electrical telegraph. It was faster than riding couriers for bringing a message over long distances. Types of optical telegraph are the semaphore, ship flags, smoke signals, and beacons. The distance that an optical telegraph can bridge is limited by geography, the shape of the earth, weather, and the sharpness of the human eye. In practical use, most optical telegraphs used relay leagues to bridge longer distances. Telegraphy (from the Greek words tele = far away and grapho = write) is the long distance transmission of written messages without physical transport of letters, originally over wire. ...
The electrical telegraph is a telegraph that uses electric signals. ...
The semaphore line was a signalling system invented by the Chappe brothers in France. ...
The system of international maritime signal flags is a way of representing individual letters of the alphabet on ships or in nautical situations. ...
Smoke signals is an early form of the optical telegraph, developed by the native North Americans and Chinese (as in the towers of the Great Wall. ...
This page discusses Beacons, fires designed to attract attention. ...
A relay league is a chain of message forwarding stations in a system of optical telegraphs, radio telegraph stations, or riding couriers. ...
Optical telegraph system Chappe near Saverne, France There was in France at the end of the 18th century a complete and working installation of optical telegraph. During the Revolutionary period, a French inventor, Claude Chappe (1763–1805), convinced the Deputies to set up a huge network between major cities. It was used for army and national communications till the 1850s. Download high resolution version (2560x1920, 2390 KB) Wikipedia does not have an article with this exact name. ...
Download high resolution version (2560x1920, 2390 KB) Wikipedia does not have an article with this exact name. ...
Saverne (German Zabern), a town of France in the région of Alsace, situated on the Rhine-Marne canal at the foot of a pass over the Vosges Mountains, and 45 km (27 m. ...
(17th century - 18th century - 19th century - more centuries) As a means of recording the passage of time, the 18th century refers to the century that lasted from 1701 through 1800. ...
The period of the French Revolution in the history of France covers the years between 1789 and 1799, in which democrats and republicans overthrew the absolute monarchy and the Roman Catholic Church was forced to undergo radical restructuring. ...
Claude Chappe (December 25, 1763 _ January 23, 1805) was a French inventor who in 1792 demonstrated a practical semaphore system that eventually spanned all of France. ...
Events and Trends Technology Production of steel revolutionised by invention of the Bessemer process Benjamin Silliman fractionates petroleum by distillation for the first time First transatlantic telegraph cable laid First safety elevator installed by Elisha Otis Science Charles Darwin publishes The Origin of Species, putting forward the theory of evolution...
A chain of semaphores was built in England during the Napoleonic Wars in the 19th century to warn London of a French invasion. The chain ran from the Admiralty in Whitehall to Portsmouth in the English Channel. As a result there are several locations still called Telegraph Hill. There is a restored example on a hill at Chatley Heath in Surrey. Royal motto: Dieu et mon droit (French: God and my right) Englands location within the UK Official language English de facto Capital London de facto Largest city London Area - Total Ranked 1st UK 130,395 km² Population - Total (2001) - Density Ranked 1st UK 49,138,831 377/km² Religion...
Napoleonic Wars are the wars fought during Napoleon Bonapartes rule of France. ...
Alternative meaning: Nineteenth Century (periodical) (18th century — 19th century — 20th century — more centuries) As a means of recording the passage of time, the 19th century was that century which lasted from 1801-1900 in the sense of the Gregorian calendar. ...
Old Admiralty House, Whitehall, London, Thomas Ripley, architect, 1723-26, was not admired by his contemporaries and earned him some scathing couplets from Alexander Pope The Admiralty was historically the authority in the United Kingdom responsible for the command of the Royal Navy. ...
Whitehall, London, looking south towards the Houses of Parliament For other places with the same name see Whitehall (disambiguation) Whitehall is a road in London, the capital of the United Kingdom, running two-thirds of the distance from Trafalgar Square towards Parliament Square; the other third constitutes Parliament Street. ...
This article is about the English city of Portsmouth. ...
The English Channel ( French:La Manche) is the part of the Atlantic Ocean that separates the island of Great Britain from northern France, and joins the North Sea to the Atlantic Ocean. ...
Surrey is a county in southern England, one of the Home Counties. ...
In the 1850s, U.S. Army Major Albert J. Myer, a surgeon by training, developed a system using left or right movements of a flag (or torch or lantern at night), similar to the Morse code of dots and dashes. This is sometimes called the wig-wag method of signaling. More mobile than previous means of optical telegraphy, this code was used extensively by Signal Corps troops on both sides in the American Civil War. (Its first use in battle was by Confederate Lieutenant Edward Porter Alexander at the First Battle of Bull Run in 1861.) Events and Trends Technology Production of steel revolutionised by invention of the Bessemer process Benjamin Silliman fractionates petroleum by distillation for the first time First transatlantic telegraph cable laid First safety elevator installed by Elisha Otis Science Charles Darwin publishes The Origin of Species, putting forward the theory of evolution...
The Army is the branch of the United States armed forces which has primary responsibility for land-based military operations. ...
Insignia of an 0-4 in the U.S. Armed Forces In the US Army, Air Force, Marine Corps and the British Army, a major is a commissioned officer superior to a captain and inferior to a lieutenant colonel. ...
Albert James Myer Albert James Myer (September 20, 1828 – August 24, 1880) was a surgeon and U.S. Army officer. ...
Morse code is a system of representing letters, numbers and punctuation marks by means of a code signal sent intermittently. ...
The Signal Corps is a military branch, usually subordinate to a countrys army. ...
The American Civil War was fought in the United States from 1861 until 1865 between the United States – forces coming mostly from the 23 northern states of the Union – and the newly-formed Confederate States of America, which consisted of 11 southern states that had declared their secession. ...
For other meanings of confederate and confederacy, see confederacy (disambiguation) National Motto Deo Vindice (Latin: Under God our Vindicator) Official language English de facto nationwide Various European and Native American languages regionally Capital Montgomery, Alabama February 4, 1861–May 29, 1861 Richmond, Virginia May 29, 1861–April 9, 1865 Largest...
A Lieutenant is a military, paramilitary or police officer. ...
Edward Porter Alexander Edward Porter Alexander (May 26, 1835 – April 28, 1910) was an engineer, an officer in the U.S. Army and Confederate States Army, an author, and a railroad executive. ...
The First Battle of Bull Run, referred to as the First Battle of Manassas in the South, (July 21, 1861), was the first major land battle of the American Civil War. ...
1861 is a common year starting on Tuesday. ...
Throughout Chinese history, smoke signals were used as communication tool during war time. Until these days, the Chinese phrase 烽火 (feng1 huo3, fire signals) is still used as a synonym for war. China is the worlds oldest continuous major civilization, with written records dating back about 3,500 years and with 5,000 years being commonly used by Chinese as the age of their civilization. ...
See also Childs Hill, grid reference TQ250866, is the south-easternmost point of the ancient parish of Hendon, and is now a part of the London Borough of Barnet. ...
External links |
Feeds |
Contact