Mechanical Television (2)
This section goes into quite a bit of detail on how I built my rotating disc television. Please note that I'm not responsible if you do or copy anything I describe and something goes wrong!
Modern mechanically scanned TV systems usually use LEDs as the light source. They are fast enough and run off low voltages which is safer (neon bulbs typically require 60 to 90 volts which can give an unpleasant electric shock if bare wires are touched). Orange LEDs may be used to simulate the colour of the original neon tubes and it is relatively easy to put together enough of them to give sufficient brightness.