Alexander Friedrich Just (12 April 1874, in
Bremen – 30 May 1937, in
Budapest
Budapest is the Capital city, capital and List of cities and towns of Hungary, most populous city of Hungary. It is the List of cities in the European Union by population within city limits, tenth-largest city in the European Union by popul ...
) was an
Austro-Hungarian[ ]chemist
A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a graduated scientist trained in the study of chemistry, or an officially enrolled student in the field. Chemists study the composition of ...
and inventor. Later, in Hungary he used the name Just Sándor Frigyes. In 1904 with Austro-Hungarian Franjo Hanaman he was the first to develop and patent an incandescent light bulb with a tungsten filament, made by extruding a paste of tungsten powder and a carbonaceous binder to produce a fine thread, then removing the carbon by heating in an atmosphere of hydrogen and water vapors. Just and Hanaman received a Hungarian patent in 1904, and later US Patent 1,018,502.[Day, Lance and McNeil, Ian "Biographical dictionary of the history of technology," Routledge, 1996. Cited edition is Taylor & Francis eBook, 2005, page 290. . Retrieved December 14, 2011.] It was supplanted by the drawn tungsten filament lamp, developed in 1910 by William David Coolidge.
References
External links
NY-Times 16 April 1916 about Just
(pdf)
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{{DEFAULTSORT:Just, Alexander
1874 births
1937 deaths
Inventors from Austria-Hungary
20th-century German chemists
Hungarian chemists
Scientists from Budapest
Scientists from Bremen (city)
Chemists from Austria-Hungary