A selenium photoelectric tube detected the light reflected from the subject and converted it into a proportional electrical signal.
This was transmitted by AM radio waves to a receiver unit, where the video signal was applied to a neon light behind a second Nipkow disk rotating synchronized with the first.
The brightness of the neon lamp was varied in proportion to the brightness of each spot on the image.
As each hole in the disk passed by, one scan line of the image was reproduced.
Instead, a 17.5mm film was shot, rapidly developed and then scanned while the film was still wet.
An American inventor, Charles Francis Jenkins, also pioneered the television.
Although he never built a working model of the system, variations of Nipkow's spinning-disk "image rasterizer" became exceedingly common.
Constantin Perskyi had coined the word television in a paper read to the International Electricity Congress at the International World Fair in Paris on August 24, 1900.
In the receiver, a type of Kerr cell modulated the light and a series of variously angled mirrors attached to the edge of a rotating disc scanned the modulated beam onto the display screen. The 8x8 pixel resolution in this proof-of-concept demonstration was just sufficient to clearly transmit individual letters of the alphabet.
An updated image was transmitted "several times" each second.