Question

who has invented tha tv and when give full detail

Answer 1

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Answer 2

Television wasn't invented by a single person. The efforts of many people working over the years, together and separately, contributed to the evolution of the technology.

At the dawn of television history, two competing experimental approaches led to the breakthroughs that eventually made the technology possible. Early inventors attempted to build either a mechanical television based on Paul Nipkow's rotating disks or an electronic television using a  cathode rah tube developed independently in 1907 by English inventor A.A. Campbell-Swinton and Russian scientist Boris Rosing. 

Because electronic television systems worked better, they eventually replaced mechanical systems. Here is an overview of the major names and milestones behind one of the most important inventions of the 20th century.

German inventor Paul Gottlieb Nipkow developed a rotating disc technology in 1884 called the Nipkow disk to transmit pictures over wires. Nipkow is credited with discovering television's scanning principle, in which the light intensities of small portions of an image are successively analyzed and transmitted.

In the 1920s, John Logie Biard patented the idea of using arrays of transparent rods to transmit images for television. Baird's 30-line images were the first demonstrations of television by reflected light rather than back-lit silhouettes. Baird based his technology on Nipkow's scanning disc idea and other developments in electronics.

Charles Frankis Jeckins  invented a mechanical television system called Radiovision and claimed to have transmitted the earliest moving silhouette images on June 14, 1923. His company also opened the first television broadcasting station in the U.S., named W3XK.

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