What invention was most important in the development of the first television set?

Answer 1

Philo Farnsworth invented the television tube when he was only 14. RCA and David Sarnoff sued him for the patent, lost, then won it back taking the credit.

Answer 2

The world's first television was made by John Logie Baird, a Scotsman living in England in 1925. He called it "The Televisor".

The screen was tiny, only a few inches across. Behind the screen was a spinning disc with holes punched through the disc. As the disc rotated, the holes passed across the screen, making 30 separate passes, from edge to edge. As the holes passed, a light behind the disc varied in brightness, so creating an image in the viewing area.

It was crude and the quality wasn't all that good. Nonetheless, it worked and the principle of drawing the image line by line has remained in use ever since. The quality has improved dramatically since that first demonstration and the rotating disc was replaced with electronics but Baird's invention hasn't changed all that much.

Answer 3

The first television system to be fully operational was the development of John Logie Baird in London in 1923. It was shown to the public in 1925.

It was a time of rapid advances in electrical engineering and two things were vital in the support of Baird's television. The first was the light sensitive device used to capture light levels and turn them into an electrical signal. Without this small component, no conversion of light to electricity could take place.

The second, and one that remains a fundamental part of television technology was the ability to break the image down into a stream of data that represented individual lines of the image. Baird used the Nipkow disc, invented by Paul Nipkow to capture printed images to an electrical signal. Unlike Nipkow, Baird used the disc to continuously capture an image and replay it using a similar disc at the receiver. It was this continuous scanning and replay that delivered a moving image for the viewer.

In later years, the CRT (cathode ray tube) replaced the spinning disc but the principle of a series of individual lines has persisted since Baird's first television.

Answer 4

A dude just stumbled accross one under an overpass in Television city in 1951. After that they just started turning up almost everywhere there was electric.

Answer 5

1929