Charles Edouard Guillaume

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Charles Edouard Guillaume

1861-1938

Swiss physicist who developed a nickel-steel alloy (Invar), whose properties make it ideal for precision instruments and standard measures. Guillaume served as the director of the Bureau of International Weights and Measures, where he contributed toward the standardization of accurate scientific and commercial measurements. He was awarded the 1920 Nobel Prize in physics.

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Charles Edouard Guillaume

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