History

The history of television comprises the work of numerous engineers and inventors in several countries over many decades. The earliest proposal was in 1908, in a paper by A A Campbell-Swinton and postulated the use of cathode rays. The first practical demonstrations of television, however, were developed using electromechanical methods to scan, transmit and reproduce an image. As electronic camera and display tubes were perfected, electromechanical television gave way to all-electronic systems in nearly all applications.