Valdemar Poulsen

✶November 23, 1869

†July 23, 1942

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About their life

Valdemar Poulsen was a Danish engineer and inventor who developed a magnetic wire recorder called the telegraphone in 1898. He also made significant contributions to early radio technology, including the first continuous wave radio transmitter, the Poulsen arc, which was used for a majority of the earliest audio radio transmissions, before being supplanted by the development of vacuum-tube transmitters.

Danish engineer (1869-1942)

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Biography from the article Valdemar Poulsen on the English Wikipedia, available under CC BY-SA 4.0.