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What is one of the key materials Charles Édouard Guillaume studied?
Copper
Nickel steel alloys
Aluminum
Titanium
Answer
Nickel steel alloys were a key material studied by Charles Édouard Guillaume. These alloys exhibit minimal thermal expansion, making them ideal for use in precision instruments like clocks and measuring devices. Guillaume's research on nickel steels led to the development of Invar, an alloy with an extremely low coefficient of thermal expansion. This discovery earned him the Nobel Prize in Physics in 1920.
Unraveling the Genius: The Life and Legacy of Charles Édouard Guillaume
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