The Air Service did its best, even publishing in August 1917 a training manual that prescribed a 10-week, on-the-job course of practical instruction in electricity, airplanes, gasoline engines, office work, and telegraphy .
Submarine telegraphy had become a major practical problem of the day.
In an era when battlefield telegraphy was impractical, sound was the primary means by which commanders grasped what was happening on the battlefield.
The development of telegraphy also brought immediacy to the content of newspapers that had not been possible before.
As a result, the commercial space revolution has less in common with the rise of the steamship or the airliner than with the invention of telegraphy or radio.
The science of submarine telegraphy was, in fact, fairly well worked out many years ago; and the Pacific cable may be regarded as but an extension of what has already been done, though involving special arrangements and precautions.
As things turned out, railways and telegraphy made things easier for the police, too.
Learning telegraphy , he worked in various midwestern cities as a telegraph and presswire operator.
In this function it is a significant incremental improvement to pre-existing telegraphy and telephony.
Samuel Finley Breese Morse invented the Morse system of telegraphy in the 1840s in the United States.