What are the major components of the 1928 octagon television?

The 1928 octagon television, also known as the Baird's octagonal television, featured several key components including a rotating disk with a spiral of holes for scanning, a light source, and a photoconductor to capture images. Its octagonal shape was designed for better light distribution and to enhance image clarity. The device utilized mechanical scanning to transmit images, which were then displayed on a screen, making it one of the early attempts at television technology. The 1928 model was instrumental in demonstrating the potential of television as a medium for visual communication.