Twentieth Century Communications
By Mark Lambert.
Description
This series attempts to cover a wide variety of subjects and to follow their progression and development during the 20th century. This illustrated volume provides an overview of the developments in communications throughout this century. It describes the invention of the electric telegraph in the middle of the 19th century, which made rapid communications possible, and the increasing impact of telephone and radio communications as the networks spread during the 1920s. Marconi's pioneering method of flying blind in an aeroplane by following a radio beam is noted and the developments in ...
ISBN(s)
1852103159, 9781852103156
