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Werner von Bolton
German chemist and materials scientist (1868–1912) From Wikipedia, the free encyclopedia
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Werner von Bolton (8 April 1868 – 28 October 1912) was a German chemist and materials scientist. He devised a technique for producing filaments for incandescent light bulb made out of tantalum in 1902.
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Life
Werner von Bolton was born in Tiflis, Russian Empire. He went on to study Chemistry at the Technische Hochschule Berlin and in Leipzig. Post-Graduation, von Bolton worked at the company Siemens & Halske in Berlin. In 1895 he achieved his doctorate.

In 1902 von Bolton detected the benefits of using Tantalum as a material in the production of filaments. Tantalum allowed for a greater luminosity with lower energy consumption when compared with previous alternatives such as coal.[1]
In 1905, Siemens & Halske awarded von Bolton the position of director of the first central laboratory of the company, later the Physics and Chemistry laboratory.
After 1910, the bulbs with a tantalum filament were replaced by those with a tungsten filament.
Von Bolton died in Berlin on 28 October 1912. He is honoured with the Boltonstraße, a street named after him in Siemensstadt, an area of Berlin's Spandau district.
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