Therefore, it is not easy to determine who invented it.
However, it is said that the first person to create something that looked like a television was an Englishman named Baird in 1925. The photoelectric tube, which had already been invented at that time, was useful for this.
A phototube is a machine that can change the brightness or darkness of light into the intensity of electric current. Baird thought it would be possible to use this to make a television. Baird's TV camera works by rotating a round disk with many holes, converting incoming light into an electric current with a phototube placed behind it, and sending the current to a TV set far away from the disk.
The television was illuminated by the light from behind the rotating disk, which was made in the same way as the camera, and the image was projected on a screen placed on the front.
It was shaped like a large record player and did not look exactly like today's televisions, but the idea of creating an image by running dots of light was utilized in today's televisions.
Later, Kenjiro Takayanagi of Japan successfully experimented with the cathode-ray tube television as we know it today. However, it was not put into practical use because the camera was not yet ready.
It wasn't until 1933, when the American scientist Zwolkin invented the iconoscope, an important component of the TV camera, that we were able to produce the clear images that we see today.