The start of the market all began in 1897 by K.F. Braun. He invented the cathode ray tube which would become the screen of most sets. In 1925 C. Francis Jankins had used some ideas from a Scottish engineer, A. A. Campbell, to create images on the screens. The United States navy used this new technology to transfer images back and forth to its ships. In 1929 David Sarnoff invested $50 million dollars into the development of television sets. In 1935 Sarnoff committed RCA to the development of television sets. Several networks had to beg ....