Before 1925 in Television - Global Television Events

Global Television Events

Year Event
1873 Willoughby Smith discovered the photoconductivity of the element selenium. This led to the invention of the photoelectric cell.
1877 George R. Carey of Boston, Massachusetts creates a selenium telectroscope—a camera that could project a moving image to a distant point. The telectroscope was the first television prototype.
1880 Proposals to transmit images by rapidly scanning them in succession are independently made by William E. Sawyer of the United States and Maurice Leblanc of France.
1884 Paul Nipkow invents the Nipkow disk, a means of mechanically scanning an image. This method was later used in mechanical television experiments.
1895 Noah S. Amstutz demonstrates the transmission of photographic halftone images by electric telegraphy.
1897 Karl Ferdinand Braun invents the cathode ray tube, using it as an oscilloscope.
1900 The word "television" is coined by Constantin Perskyi on August 18 at the First International Electricity Congress in Paris, France.
1907 Boris Rosing transmits silhouette images of geometric shapes, using a Nipkow disc, mirror-drum, and a cathode-ray tube receiver.
1908 In his letter to Nature, Alan Campbell-Swinton describes the modern electronic camera and display system which others are to develop throughout the 1920s.
1921 Charles Francis Jenkins with a group of friends incorporates Jenkins Laboratories in Washington, D.C. with the purpose of "developing radio movies to be broadcast for entertainment in the home".
1922 Charles Jenkins' first public demonstration of television principles. A set of static photographic pictures was transmitted from Washington, D.C. to the Navy station NOF in Anacostia by telephone wire, and then wirelessly back to Washington.
1922 Philo Farnsworth first describes an image dissector tube, which uses cesium to produce images electronically, but will not produce a working model until 1927.
1923 Charles Jenkins' first demonstration of "true" television with moving images. This time 48-line moving silhouette images are transmitted at 16 frames per second from Washington to Anacostia Navy station.
1923 Vladimir Zworykin applies for patent for an all-electronic television system, the first ancestor of the electric scanning television camera. The patent was not granted until 1938 after significant revisions and patent interference actions.
1924 John Logie Baird demonstrated a semi-mechanical television system with the transmission of moving silhouette images.
1924 Vladimir Zworykin files a patent application for the kinescope, a television picture receiver tube.

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