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György Szigeti (29 January 1905 – 27 November 1978),[1] was aHungarianphysicist andengineer who developedtungsten lamps.
In 1923, atTungsram Ltd., a research laboratory was established for improving light sources, mainly electric bulbs.[1] The head of that laboratory was Ignácz Pfeiffer (1867–1941), whose research staff included Szigeti, along withZoltán Bay (1900–1992),Tivadar Millner,Imre Bródy (1891–1944),Ernő Winter (1897–1971), and others.[1]
Szigeti worked together with Zoltán Bay on metal-vapor lamps and fluorescent light sources. They received a U.S. patent on "electroluminescent light sources" that were made of silicon carbide; these light sources were the ancestors oflight-emitting diodes.[1]
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