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John Warcup Cornforth
John Warcup Cornforth was an Australian–British chemist.
36th week in year
7 September 2024
Important eventsBack
The first fully electronic television system is achieved7.9.1927
Wikipedia (11 Sep 2014, 11:57)
On September 7, 1927, Farnsworth's image dissector camera tube transmitted its first image, a simple straight line, to a receiver in another room of his laboratory at 202 Green Street in San Francisco. Pem Farnsworth recalled in 1985 that her husband broke the stunned silence of his lab assistants by saying, "There you are — electronic television!" The source of the image was a glass slide, backlit by an arc lamp. An extremely bright source was required because of the low light sensitivity of the design. By 1928, Farnsworth had developed the system sufficiently to hold a demonstration for the press. His backers had demanded to know when they would see dollars from the invention, so the first image shown was, appropriately, a dollar sign. In 1929, the design was further improved by elimination of a motor-generator, so the television system now had no mechanical parts. That year, Farnsworth transmitted the first live human images using his television system, including a three and a half-inch image of his wife Pem with her eyes closed because of the blinding light required.
(photo source uselesseaterblog.blogspot.com)
(photo source uselesseaterblog.blogspot.com)
