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Valdemar Poulsen, Danish electrical engineer, c 1910-1920

IMAGE number
UIS5076037
Image title
Valdemar Poulsen, Danish electrical engineer, c 1910-1920
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Location
Science Museum, London, UK
Medium
photography
Image description

Valdemar Poulsen, Danish electrical engineer, c 1910-1920. In 1898 Valdemar Poulsen (1869-1942) was the first to develop electromagnetic tape recording and through a process that recorded changes in the magnetic field on a moving, thin, steel wire, the Telegraphone was invented. He also worked to improve wireless transmission and in 1903, together with Peder Oluf Pedersen (1874- 1941), he developed the Poulsen arc generator which was capable of transmitting continuous radio waves and enabled speech to be generated up to a radius of 150 miles. ©SSPL/Science Museum

Photo credit
SSPL/UIG / Bridgeman Images
Image keywords
portrait

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