Electric telegraph

Single needle telegraph instrument

An Electric telegraph is a telegraph that uses electric signals, uisually conveyed via a dedicated telecommunication circuit or bi radio. The electric telegraph, or mair commonly juist telegraph, superseded optical semaphore telegraph seestems, sicweys acomin the first form o electrical telecommunications. In a matter o decades efter thair creation in the 1830s, electric telegraph networks permitted fowk an commerce tae transmit messages across continents an oceans awmaist instantly, wi widespread social an economic impacts.