Peter said:

>>From principles and pictures to a diy project to make a mechanically
> scanned tv receiver (Nipkow disk style using LEDs as modulated light 
> generator)

        http://www.earlytelevision.org/

Early predecessors of "Olin's Eyeball" - TV comes full circle :-)

Note that the *general* principle is the same but the scanning system 
scrimps even more on light emission source as it achieves line and 
column scan.

        RM 

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