Valdemar Poulsen | |
---|---|
Born | 23 November 1869 |
Died | 23 July 1942 Gentofte, Denmark | (aged 72)
Nationality | Danish |
Occupation | Engineer |
Engineering career | |
Projects | magnetic wire recorder, arc converter radio transmitter |
Valdemar Poulsen (23 November 1869 – 6 August 1942) was a Danish engineer 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, [1] which was used for a majority of the earliest audio radio transmissions, before being supplanted by the development of vacuum-tube transmitters.[2]