Mechanical television
（重定向自Televisor）
![Watching a homemade mechanical-scan television receiver in 1928. The](/Images/godic/202502/15/Science_and_Invention_Television_19284319.jpg")
![The Nipkow disk. This schematic shows the circular paths traced by the holes, that may also be square for greater precision. The area of the disk outlined in black shows the region scanned.](/Images/godic/202502/15/Nipkow_disk.svg4319.png")
![Baird in 1925 with his televisor equipment and dummies](/Images/godic/202502/15/John_Logie_Baird_and_Stooky_Bill4319.png")
![](/Images/godic/202502/15/Early_Television_System_Diagram4319.png")
Mechanical television or mechanical scan television is a television system that relies on a mechanical scanning device, such as a rotating disk with holes in it or a rotating mirror, to scan the scene and generate the video signal, and a similar mechanical device at the receiver to display the picture.