1925 in American television

none 1925 This is a list of American television-related events in 1925. Events June 13 – The American inventor Charles Francis Jenkins publicly demonstrated the synchronized transmission of silhouette pictures. In 1925, Jenkins used a Nipkow disk and transmitted the silhouette image of a toy windmill in motion, over a distance of 5 mi on (from a naval radio station in Maryland to his laboratory in Washington, D.C.), using a lensed disk scanner with a 48-line resolution.Radio Shows Far Away Objects in Motion The New York Times June 14, 1925 1 Glinsky Albert Theremin: Ether Music and Espionage Urbana, Illinois University of Illinois Press 2000 41–45 978-0-252-02582-2 https://archive.org/details/thereminethermus00glin registration June 30 - The American inventor Charles Francis Jenkins was granted U.S. patent 1,544,156 (Transmitting Pictures over Wireless). He had filed for this patent on March 13, 1922.1544156 Specific date unknown – The American inventor Vladimir Zworykin had worked on the development of an electronic camera tube since 1923, while working for Westinghouse Electric. In a 1925 demonstration of Zworykin's device, the image was dim, it had low contrast and poor definition, and it was stationary.Abramson, Albert, Zworykin, Pioneer of Television, University of Illinois Press, 1995, p. 51. 0-252-02104-5. In 1923, Vladimir Zworykin had applied for a television patent in the United States. He summarized the resulting invention in two patent applications. The first, entitled "Television Systems", was filed on December 29, 1923. It was followed by a second application in 1925 of essentially the same content, but with minor changes and the addition of a Paget-type RGB raster screen for color transmission and reception.He was awarded a patent for the 1925 application in 1928. Zworykin, Vladimir November 13, 1928 Television System US Patent 1691324 1925 Births 1925 in television#Births Deaths 1925 in television#Deaths References 1925 Category:1925 in American television