The development of television resembles the development of the airplane in that many engineers were working on the project around the same time, separately, and the finished product owes credit to quite a few pioneers. There are still arguments over who invented television. If one person must be named, Philo T. Farnsworth gets the credit in most cases, since he patented the all-electronic television system. However, many other breakthroughs came before Farnsworth.
1. Paul Nipkow
2. Boris Rosing
Continue reading for the steps toward television as we know it.
3. A. A. Campbell-Swinton
Alan Archibald Campbell-Swinton was a Scottish electrical engineer who was the first to publicly describe transmission of scanned images by using a cathode ray tube on both the sending and receiving end. Others had proposed television by cathode ray tube, but only on the receiving end. Campbell-Swinton's first published account of such a system was in a 1908 letter to the publication Nature. He later lectured on the question of television, stating that the future of the medium was surely to be all-electronic, as opposed to mechanical methods.
4. Charles Francis Jenkins
Charles Francis Jenkins was the earliest American television pioneer. He described his research on television beginning in 1894 in the magazine Electrical Engineer. He publicly demonstrated the transmission of moving images (silhouettes) using a mechanical television system in 1923. In 1925, he demonstrated long distance transmission by sending moving pictures from Anacosta, Virginia to Washington, D.C. By 1928, he was broadcasting a regular schedule of moving pictures from his radio station W3XK in Washington, although the images were primitive. Jenkins built and sold "Radiovision" receivers for his potential audience.
5. John Logie Baird
6. Kenjiro Takayanagi
Japanese high school teacher Kenjiro Takayanagi built a television system using Nipkow's scanning disc as a transmitter and a cathode ray tube as a receiver in 1926. Essentially, he invented the electronic TV set. Takayanagi took his expertise to NHK, the Japanese broadcasting corporation and later to JVC, where he became vice-president. (image credit: Flickr user Sphl)
7. Vladimir Zworykin
Russian electrical engineer Vladimir Zworykin was a student of Boris Rosing. After the Russian revolution, he emigrated to the US, where he worked at Westinghouse. He patented the system of an electronic transmitter coupled with an electronic cathode ray tube receiver in 1923. However, he didn't demonstrate a working prototype until 1929. When he did, RCA hired him on the spot. Zworykin jumped at the chance, since Westinghouse was never interested in his wild ideas.
8. Philo T. Farnsworth
Philo T. Farnsworth was a Utah prodigy who worked out the problems of transmitting television pictures when he was a teenager. In 1927, at the age of 21, he arranged for a demonstration of an electronic transmitter (which he called the Image Dissector) and an electronic receiver (CRT) for a group of potential investors. The image sent was only a line in the middle of a square, but when it moved, you could see it on the receiver. Farnsworth applied for a patent in 1930, and found that Vladimir Zworykin had also filed for a patent on the all-electronic system in 1923. A legal battle followed. In the end, Farnsworth convinced the patent officials that not only had Zworykin failed to build his system before 1931, but also that Farnsworth had conceived the idea many years earlier (as witnessed by one of his high school teachers). Farnsworth got the patent for the all-electronic system when the case was finally decided in 1935.
The TV we know today is the product of many inventors. In addition to the eight listed here, image broadcasting owes a lot to Rene Bartholemy, Karl Ferdinand Braun, Herbert Ives, KÃ¡lmÃ¡n Tihanyi and others who furthered the science and technology of television with their innovations. Now you know who to blame for soap operas, laugh tracks, and late-night infomercials. On the flip side, without these television pioneers, we would never have seen a man walk on the moon, the Vietnam War would have lasted years longer, and most of us would never have a chance to see how the rest of the world lives.