LEONTOVICH 218 



Director, in 1953, of the Institute of Exact Mechanics and Com- 

 puting Technicians of the U.S.S.R. Academy of Sciences. Also 

 in 1953 he was made professor at the Moscow Physico- 

 Technical Institute. He has been a member of the Communist 

 Party of the Soviet Union since 1946. In 1945 he was elected 

 Academician of the Ukrainian S.S.R. Academy of Sciences and 

 in 1953 an Academician of the U.S.S.R. Academy of Sciences. 

 He was awarded a Stalin Prize in 1950 and in 1956 he was a 

 Hero of Socialist Labor. 



Lebedev was one of the first in the U.S.S.R. to work on the 

 stability of power systems. He is the author of a theory on the 

 stability of synchronous machines, and a specialist in auto- 

 mation of power systems. He has been working on computer 

 techniques and the design and construction of computer devices. 

 He directed the construction of high speed computers. 



In December 1958 and April 1959, Lebedev visited the United 

 States to attend the Joint Computer Conference in Philadelphia. 

 In November 1962 Lebedev was awarded the Order of Lenin. 

 Bibliography: 



and P. S. Zhdanov . Stability of Parallel Action of Electrical 

 Systems, 2nd ed. Moscow-Leningrad: 1934. 

 Artificial stability of synchronous machines (speech at 12th 

 session of International Conference on Large Electric Net- 

 works, Paris, June 24-July 3, 1948, published in Moscow, 

 1948). 

 Biography: 



Lebedev, Sergei Alekseevich. Vestnik Akad. Nauk S.S.S.R., 

 1954, #1, 42. 



A. D. Nesterenko and I. T. Shvets. Sergei Alekseevich 

 Lebedev. Questions of Electro -automation and Radio Tech- 

 nics. Kiev: 1954. 

 Office: Institute of Precision Mechanics and Computation 



Techniques 

 USSR Academy of Sciences 

 Leninskii Prospekt, 51 

 Moscow, USSR 

 Residence: Novopeschanaya, 17 



Moscow, USSR 

 Telephone: D7 53 75 



LEONTOVICH, MIKHAIL ALEKSANDRQV^ICH (Physicist) 



M. A. Leontovich was born March 9, 1903, son of A. V. 

 Leontovich (1869-1943, physiologist). In 1923 he graduated 

 from Moscow University. He worked on the Commission for 



