Televisor television set

The televisor, built in the workshop of the Scottish television pioneer John Logie Baird, was the first commercially available television receiver in the world. About 4000 units were manufactured. A radio receiver was still needed to pick up the signal. The image was reproduced mechanically by means of a Nipkow disk with 30 circular holes in front of a neon lamp. The image was magnified by a lens to about the size of a postcard, and had a repetition rate of only 12.5 frames per second.