Tubes are present inside a conventional television set. In these tubes the images are broken down into small pixels with the help of a beam of electrically charged particles. The beam sends information about the colour and brightness of each pixel to a chemically luminescent layer on the rear of the screen. The electron beams light up the pixels on this layer depending upon the speed. They become blurred to form a picture for our eyes. Along with the fat-bellied tube televisions, there are also televisions with flat screens that have been improved very rapidly.
