page_title: Philo Farnsworth
section_title: Legacy
hierarchical_section_title: Philo Farnsworth / Legacy
caption_attribution_description: English: Plaque on Green Street in San Francisco dedicated to Philo Farnsworth. The text reads as follows: FARNSWORTH'S GREEN STREET LAB In a simple laboratory on this site, 202 Green Street, Philo Taylor Farnsworth, U.S. pioneer in electronics, invented and patented the first operational all- electronic television system on September 7 1927. The 21-year-old inventor and several dedicated assistants successfully transmitted the first all-electronic television image, the major breakthrough that brought the practical form of this invention to mankind. Further patents formulated here covered the basic concepts essential to modern television. The genius of green street, as he was known, died in 1971. California registered historical landmark no. 941 Plaque placed by the state department of parks and recreation in cooperation with the Philo Farnsworth Foundation, Inc., September 15, 1981. Polski: Tablica upamiętniająca pioniera telewizji Philo Farnswortha przy ulicy Green Street w San Francisco.
context_page_description: Philo Taylor Farnsworth was an American inventor and television pioneer. He made many crucial contributions to the early development of all-electronic television. He is best known for his 1927 invention of the first fully functional all-electronic image pickup device, the image dissector, as well as the first fully functional and complete all-electronic television system. Farnsworth developed a television system complete with receiver and camera—which he produced commercially through the Farnsworth Television and Radio Corporation from 1938 to 1951, in Fort Wayne, Indiana.
  In later life, Farnsworth invented a small nuclear fusion device, the Farnsworth–Hirsch fusor, employing inertial electrostatic confinement. It was not a practical device for generating nuclear power, though it provides a viable source of neutrons. The design of this device has been the inspiration for other fusion approaches, including the Polywell reactor concept. Farnsworth held 300 patents, mostly in radio and television.
context_section_description: In a 1996 videotaped interview by the Academy of Television Arts & Sciences, Elma Farnsworth recounts Philo's change of heart about the value of television, after seeing how it showed man walking on the moon, in real time, to millions of viewers:
  Interviewer: The image dissector was used to send shots back from the moon to earth.
  Elma Farnsworth: Right.
  Interviewer: What did Phil think of that?
  Elma Farnsworth: We were watching it, and, when Neil Armstrong landed on the moon, Phil turned to me and said, "Pem, this has made it all worthwhile."  Before then, he wasn't too sure.
caption: Plaque at the location of Farnsworth's San Francisco laboratory on Green Street.[27]
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