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Telegraphone
(redirected from Valdemar Poulsen)

    Also found in: Wikipedia 0.01 sec.
Te`leg´ra`phone
n.1.An instrument for recording and reproducing sound by local magnetization of a steel wire, disk, or ribbon, moved against the pole of a magnet connected electrically with a telephone receiver, or the like.
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1869: Valdemar Poulsen, Danish inventor of the tape recorder, which he patented in 1898, was born.
Onthisday by Coventry Evening Telegraph (England)
In 1896 however, Valdemar Poulsen demonstrated magnetic recording.
Recording Through Time by Sandra Stammberger / Computers and Internet community
Tape Recorder - Valdemar Poulsen - Denmark - 1898 ?
Inventions & Inventors by V A H E E / General interest community
 
 
 
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