ABSTRACT
In 1919-20, Tamm lectured in southern Russia {in Simferopol and Odessa) where he met L I Mandelshtam. Igor Evgenevich considered Mandelshtam his teacher and kept close ties and friendship with him until Mandelshtam's death in 1944. From 1922, the scientific and pedagogical activities of Tamm were concentrated in Moscow. For many years, starting from 1930, he occupied the Theoretical Physics Chair at the Moscow State University (MSU) Physics Department. The ties with the MSU were broken only after the beginning of the war, in 1941, when the Physics Department was evacuated to Central Asia and Igor Evgenevich left, with the P N Lebedev Physical Institute of the Academy of Sciences of the USSR (FIAN) , for Kazan. He had been working in this institute since 1934, since the Academy's transfer from Leningrad to Moscow, where he organized and headed the Theoretical Physics Department of FIAN. After the death of Igor Evgenevich (12 April, 1971), the department was named after him (it is now the I E Tamm Theoretical Physics Department of the P N Lebedev Physical Institute of the Russian Academy of Sciences).
