Yevgeny Konstantinovich Zavoysky

Yevgeny Konstantinovich Zavoysky (born Sept. 28 [Sept. 15, Old Style], 1907, Mohyliv-on-Dniester, Ukraine, Russian Empire [now Mohyliv-Podilskyy, Ukraine]—died Nov. 9, 1976, Moscow, Russia, U.S.S.R.) was a Soviet physicist who discovered electron paramagnetic resonance (EPR), also known as electron spin resonance (ESR). Zavoysky graduated from Kazan State University in 1930 and taught physics there in 1933–47. His program of research in radio and microwave spectroscopy culminated with the 1944 discovery of ESR in paramagnetic salts, which...