Irving Langmuir, US physical chemist

Irving Langmuir, US physical chemist

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Caption: Irving Langmuir (1881-1957), US physical chemist. Langmuir studied metallurgical engineering at Columbia University's School of Mines. He then obtained his doctorate in Germany under Nernst. From 1909, he worked as a researcher for General Electric in Schenectady, New York, USA. He worked on vacuum tubes, light bulbs, atomic theory, surface chemistry, thermionic emission, electrical discharges, and weather control. He coined the terms electrovalence, covalence and plasma. It was his 1917 theories on surface adsorption and heterogenous catalysis that led to him being awarded the 1932 Nobel Prize in Chemistry.

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