Telegraph | Invention, History, & Facts | Britannica
网页2024年7月22日 · Telegraph, any device or system that allows the transmission of information by coded signal over distance. The term most often refers to the electric telegraph, which was developed in the mid-19th century and for more than 100 years was the principal means of transmitting printed information.
Telegraphy - Wikipedia
网页A telegraph is a device for transmitting and receiving messages over long distances, i.e., for telegraphy. The word telegraph alone generally refers to an electrical telegraph. Wireless telegraphy is transmission of messages over radio with telegraphic codes.
Morse Code & Telegraph: Invention & Samuel Morse ‑ HISTORY
网页2009年11月9日 · Developed in the 1830s and 1840s by Samuel Morse and other inventors, the telegraph revolutionized long-distance communication. It worked by transmitting electrical signals over a wire laid...
Development of the telegraph industry - Encyclopedia Britannica
网页2024年7月22日 · A variant that ultimately became known as the International Morse Code was adopted in 1851 for use on cables, for land telegraph lines except in North America, and later for wireless telegraphy. Except for some minor improvements in 1938, the International Morse Code has remained unchanged.
The Origins of the Telegraph - The Franklin Institute
网页2023年6月30日 · Flags, sounds, smoke, or lights would only go as far as they could be seen or heard. While the idea for a machine dates back to the 1700s, it wasn’t until the 19th century that the telegraph – a machine that transmits text across distance – was developed.
The Telegraph - Telegraph Online, Daily Telegraph, Sunday Telegraph …
网页Latest news, business, sport, comment, lifestyle and culture from the Daily Telegraph and Sunday Telegraph newspapers and video from Telegraph TV.
Electrical Telegraph - World History Encyclopedia
网页2023年3月24日 · The Electrical Telegraph was invented in 1837 by William Fothergill Cook (1806-1879) and Charles Wheatstone (1802-1875) in England with parallel innovations being made by Samuel Morse (1791-1872) in the United States.
The History of the Electric Telegraph and Telegraphy - ThoughtCo
网页2019年10月13日 · The electric telegraph is a now outdated communication system that transmitted electric signals over wires from location to location and then translated into a message. The non-electric telegraph was invented by Claude Chappe in 1794. His system was visual and used semaphore, a flag-based alphabet, and depended on a line of sight …
How the Telegraph Went From Semaphore to Communication Game Changer
网页2013年10月11日 · Originally, the word “telegraph” –literally “to write at a distance”– referred to a relay communication system developed in 18th-century France by the Brothers Chappe.
Invention of the Telegraph | Articles and Essays | Samuel F. B.
网页Invention of the Telegraph. Long before Samuel F. B. Morse electrically transmitted his famous message "What hath God wrought?" from Washington to Baltimore on May 24, 1844, there were signaling systems that enabled people to communicate over distances.