Valdemar Poulsen
Valdemar Poulsen (1869 - 1942) was a Danish engineer. In 1899, he developed a magnetic tape recorder.
External links
- "1898 - 1998 Poulsen's patent". 100 years of magnetic recording.
- Katz, Eugenii, "Valdemar Poulsen". Biosensors & Bioelectronics.
- Poulsen, Valdemar, "US661619 Method of Recordings and Reproducing Sounds or Signals". Magnetic Tape Recorder.
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