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Dr Guillaume, Discoverer of Invar, Passes

From Horology magazine, July 1938


DR. GUILLAUME, DISCOVERER OF INVAR, PASSES Dr. Charles-Edouard Guillaume, famous for his researches with nickel steel alloys, died at Sevres, France on June 13th at the age of 77. A native of Switzerland, Dr. Guillaume grew up in the Jura mountain region where the manufacture of watches is a leading industry.

While yet a young man he was given a position at the International Bureau of Weights and Measures where he began his now classic researches into the behavior of nickel steel alloys, which culminated in the discovery of invar and elinvar. He was the recipient of many coveted honors among which were membership in the French Academy of Science and the Nobel Prize in 1920.

In January 1937, upon his retirement from the International Bureau of Weights and Measures, a medal commemorating his services was struck off.

The horological industry in particular has benefited from Dr. Guillaume's work and mourns the passing of its most distinguished research engineer. Funeral services were held on June 17th in Fleurier, Switzerland, where he was born. 

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