On September 7, 1927, Philo Farnsworth's image dissector camera tube transmitted its first image, a simple straight line, at his laboratory at 202 Green Street in San Francisco.
12.
On August 25, 1934, Farnsworth gave the world's first public demonstration of a complete, all-electronic television system, which included his image dissector, at the Franklin Institute in Philadelphia, Pennsylvania.
13.
On 7 September 1927, American inventor Philo Farnsworth's image dissector camera tube transmitted its first image, a simple straight line, at his laboratory at 202 Green Street in San Francisco.
14.
But Zworykin later abandoned research on the Image Dissector, which at the time required extremely bright illumination of its subjects to be effective, and turned his attention to what would become the Iconoscope.
15.
Before leaving his old employer, Zworykin visited Farnsworth's laboratory and was sufficiently impressed with the performance of the Image Dissector that he reportedly had his team at Westinghouse make several copies of the device for experimentation.
16.
He made many contributions that were crucial to the early development of electronic image pickup device ( video camera tube ), the " image dissector ", as well as the first fully functional and complete all-electronic television system.
17.
Since the electrons emitted within an image dissector are collected by the electron multiplier or anode only during the very brief time an area of the " electron image " is exposed, the bulk of the electrons are lost.
18.
It was soon developed there, with some improvements, and was successfully used at the 1936 Berlin Olympic Games as one of several cameras, including Philo Farnsworth's Image Dissector, for film transmission only, broadcasting the games to some two-hundred public theaters.
19.
However, the Baird system, which used a mechanical camera for filmed programming and Farnsworth image dissector cameras for live programming, proved too cumbersome and visually inferior, and ended with closedown ( at 22 : 00 ) on Saturday 13 February 1937.
20.
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 . so the first image shown was, appropriately, a dollar sign.
