Nikolay Semyonov

Soviet physicist and chemist (1896–1986)

Nikolay Nikolayevich Semyonov, sometimes Semenov, Semionov or Semenoff (Russian: Никола́й Никола́евич Семёнов; 15 April [O.S. 3 April] 1896 – 25 September 1986) was a Soviet physicist and chemist. Semyonov was awarded the 1956 Nobel Prize in Chemistry for his work on the mechanism of chemical transformation.²

From Wikipedia’s article on Nikolay Semyonov (this version), CC BY-SA 4.0.

Born Apr 15, 1896, died Sep 25, 1986.¹