DNPの牙城に挑む　中国・衆凌科技、有機ELの製造用部品を量産

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#OnThisDay June 13, 1938: Nobel Prize-winning Physicist Charles-Édouard Guillaume, who created Invar and Elinvar, dies in Sèvres, France. His materials revolutionized watch balances and springs. #Fleurier #Invar #Neuchatel

#OnThisDay February 15, 1861: Physicist Charles-Édouard Guillaume is born in Fleurier. He would win the Nobel Prize for the discovery of the properties of nickel-iron alloys like Invar, which does not expand or contract and revolutionized watch balance wheels. #Fleurier #Invar #Neuchatel