In the last years of the Great War and until 1921 Frenkel was involved (along with Igor Tamm) in the foundation of the University in Crimea (his family moved to Crimea due to the deteriorating health of his mother). From 1921 till the end of his life, Frenkel worked at the Physico-Technical Institute. Beginning in 1922, Frenkel published a book virtually every year. In 1924, he published 16 papers (of which 5 were basically German translations of his other publications in Russian), three books, and edited multiple translations. He was the author of the first theoretical course in the Soviet Union. For his distinguished scientific service, he was elected a corresponding member of the USSR Academy of Sciences in 1929.Yakov I. Frenkel pn the website of Ioffe Physico-Technical Institute
