Nikola Tesla, Croatian-born Serb engineer, physicist and inventor, c 1885.
© Science Museum / Science & Society Picture Library
Portrait of Nikola Tesla (1856-1943), naturalised American physicist and electrical engineer, who was born in Croatia to Serbian parents. Tesla was the inventor of polyphase electrical power systems and the ac induction motor. He developed the Tesla coil and had the SI unit (the international system of standard scientific units) of magnetic flux density, the Tesla, named after him.