György Szigeti (29 January 1905 – 27 November 1978), "Fizikai Szemle 1999/5 - Zsolt Bor: Optics by Hungarians" (with Zoltan Bay), József Attila University,

Szeged Szeged ( , ; see also other alternative names) is the third largest city of Hungary, the largest city and regional centre of the Southern Great Plain and the county seat of Csongrád-Csanád county. The University of Szeged is one of the m ...

Hungary Hungary ( hu, Magyarország ) is a landlocked country in Central Europe. Spanning of the Pannonian Basin, Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the ...

, 1999, webpage:
KFKI-Hungary-Bor
also known as Gyorgy Szigeti, was a Hungarian

physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate cau ...

and

engineer Engineers, as practitioners of engineering, are professionals who invent, design, analyze, build and test machines, complex systems, structures, gadgets and materials to fulfill functional objectives and requirements while considering the limit ...

who developed

tungsten Tungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. Tungsten is a rare metal found naturally on Earth almost exclusively as compounds with other elements. It was identified as a new element in 1781 and first isol ...

lamps. In 1923 at Tungsram Ltd., a research laboratory was established for improving light sources, mainly electric bulbs. The head of that laboratory was Ignácz Pfeiffer (1867-1941), whose research staff included Szigeti, along with

Zoltán Bay Zoltán () is a Hungarian masculine given name. The name days for this name are 8 March and 23 June in Hungary, and 7 April in Slovakia. Zoltána is the feminine version. Notable people * Zoltán of Hungary * Zoltan Bathory, guitarist of heavy ...

(1900-1992), Tivadar Millner, Imre Bródy (1891-1944), Ernő Winter (1897-1971), and others. 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 of

light-emitting diode A light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons. The color of the light (co ...

s (LEDs).

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External links

KFKI notes on György Szigeti

{{DEFAULTSORT:Szigeti, Gyorgy 20th-century Hungarian physicists 20th-century Hungarian inventors 20th-century Hungarian engineers 1905 births 1978 deaths