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| | Irving Langmuir Summary |
 | | Langmuir, the third of four sons, was born on January 31, 1881, in Brooklyn, New York, to Charles Langmuir, an insurance executive of Scottish descent, and Sadie Comings Langmuir, the daughter of an anatomy professor and a descendant, on her mother's side of the family, of settlers who came to America on the Mayflower. |
 | | Langmuir began to study the problem, and within four years, he found that the lamp's lifetime and efficiency could be improved greatly by filling the bulb with a mixture of inert gases (nitrogen and argon, for example) and by using a coiled filament. |
 | | Irving Langmuir was born in Brooklyn, New York on January 31, 1881. |
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