Baird Phonovision (Televisor) disc RWT620-4, recording of a man's head in motion on a disc produced by the Columbia Graphophne Company Ltd, made by John Logie Baird 10 January 1928. One of only six Phonovision discs known to exist, representing the first time television pictures were recorded. Phonovision discs contain the original experimental television recordings of John Logie Baird (1888-1946), recorded from 1927-1928, less than two years after his first demonstration of television. With only 30 lines per picture (per television frame), the highest frequency present was low enough to be audible - the video signal could therefore be recorded as an audio signal onto disc.
- Object Number:
- televisor disc
- National Media Museum, Bradford
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