electric telegraph
Victorian long-distance communication
An electric telegraph is a communication system that transmits messages over wires using electrical signals.
Developed in the mid-19th century, it revolutionized long-distance communication by enabling near-instantaneous transmission of coded messages—most famously in Morse code.
The technology dominated global communication until displaced by the telephone and later technologies.
News of Lincoln's assassination spread by electric telegraph.
- transatlantic cableUnderwater intercontinental communication wire
- submarine cableSubmerged telecommunications wire
- telecommunicationElectronic distance communication
- Samuel MorseTelegraph pioneer, code creator
- electromagnetismForce linking charge and magnetism
Morse code · resistors · copper wire · insulators · conductivity · sounder · breaking news · Western Union · circuit design · long distance · capacitors · transformers · globalization · relay station · radio waves · Pony Express · data compression · ticker tape
electric telegraphwireless telegraphy
Cable-free signal transmission
radio · satellite communication · semaphore · smoke signals · carrier pigeon
electric telegraphsnail mail
Physical letter delivery
pony express · messenger service · diplomatic pouch · postal service · courier
electric telegraphinternet
Interconnected computer systems
email · smartphone · instant messaging · social media · 5G network
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