Nikola Tesla, Serb-US physicist

Numéro d’image : 12249781
Nikola Tesla, Serb-US physicist
Nikola Tesla (1856-1943), Serb-US physicist and electrical engineer, holding a 'wireless light bulb'. Tesla was educated at Graz and Prague, but in 1884 he emigrated to the USA. For a while he worked with Edison, but soon left to work on his own. He developed the alternating current (a.c.) induction motor, and helped advance a.c. power generation and transmission. He also worked on high-frequency a.c. currents, inventing the Tesla Coil, a transformer in which the primary and secondary coils are in resonance. He used it to create electric sparks 40 metres long, and in 1899 lit 200 electric lamps without wires. The SI unit of magnetic flux density is named for him. Photographed in around 1919, by the Sarony photographic studio, New York, USA.
Licence : Droits gérés
Crédit: Science Photo Library / Kenneth M. Swezey Papers, Archives Center, National Museum of American History, SMITHSONIAN INSTITUTION
Taille de l’image : 2333 px × 2904 px
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