Incandescent light bulb - Filling lamps with krypton gas rather than argon
Time: 1930
Place: Budapest, Hungary
Details: In 1930, Hungarian Imre Bródy filled lamps with krypton gas rather than argon, and designed a process to obtain krypton from air. Production of krypton filled lamps based on his invention started at Ajka in 1937, in a factory co-designed by Polányi and Hungarian-born physicist Egon Orowan.
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