Many advancements were made in the field of 'wireless telegraphy' during the war years. By what name is wireless telegraphy better known?

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The First World War saw innovations and inventions on the fields of battle with tanks, aeroplanes and poison gas all being developed.  There were also advances in the field of medicine brought about by the injuries suffered on the battlefields.


Many advancements were made in the field of 'wireless telegraphy' during the war years. By what name is wireless telegraphy better known?