Valdemar Poulsen

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Danish engineer (1869-1942)

ScientistsLived 1869 to 1942 · aged 72

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Fame50.5

MomentumNot measured

Languages24

In century#46,804

Valdemar Poulsen was a Danish engineer and inventor who developed a magnetic wire recorder called the telegraphone in 1898.

Also inDeutsch

Photos 5

Poulsen's magnetic wire recorder

Poulsen's 1900 US patent for a magnetic wire recorder

"Telephonograph after Poulsen, for permanently fixing and conveniently repeating a telephonic conversation." From a 1911 catalog of physical apparatuses.

Poulsen and Pedersen painted by Knud Larsen, 1915.

Awards 7

2011National Inventors Hall of Fame

1939Knight Grand Officer of the Order of the Dannebrog

1939Valdemar Poulsen Gold Medal

1929honorary doctor of the Technical University of Denmark

1913Medal of Merit in Gold with Crown

1909honorary doctor of the Leipzig University

1907The Royal Danish Academy Gold Medal

Connected to Valdemar 6

Roald AmundsenAlso won Medal of Merit in Gold with Crown

Henry Louis Le ChatelierAlso won honorary doctor of the Technical University of Denmark

Inge LehmannAlso won The Royal Danish Academy Gold Medal Martin KnudsenAlso won Knight Grand Officer of the Order of the Dannebrog

Bartel Leendert van der WaerdenAlso won honorary doctor of the Leipzig University

Erik EriksenAlso won Knight Grand Officer of the Order of the Dannebrog

About this person

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.