Valdemar Poulsen

Ingenieur, Erfinder

Born: 23. November 1869, Kopenhagen

Died: 23. Juli 1942, Gentofte

Valdemar Poulsen — Creator: Unknown authorUnknown author | Source: Wikimedia Commons
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Die dänischen Physiker P. O. Pedersen und W. Poulsen erfinden das Telegrafon (oder den Telefonografen), das die Laute durch Änderung der magnetischen Kraftlinien in einem magnetisierten Stahldraht...

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Valdemar Poulsen

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