LANDAU, LEV (1908-68) Prominent Soviet physicist who made fundamental contributions to many areas of theoretical physics. He received the 1962 Nobel Prize in Physics for his development of a mathematical theory of superfluidity.

Typed Document Signed, in Russian, 4to, 1 page, Conclusion to a Paper by engineer N. Kalashnikov, "Description of centrifugal cooling pump", Institute for the physic problems, Moscow, n.d.

      - This is a conclusion to be added to a paper by a colleague of Landau's, an engineer at the Institute for physics problems in Moscow. In it Landau disagrees with the ideas set forth in the paper - "On the basis of letters: Narkommash number 21/19.03/1465 and The physical institute from 26.03.38 number 41". The engineer, "Kalashnikov's idea about 'The centrifugal cooling pump based on utilization of the salt's characteristics to cool down at a low temperatures with the changing of the magnetic field' is based on misunderstanding. The author wrongly suggests that the cooling down of the paramagnetic salts is happening in every rariable field; but in fact the paramagnetic salts get cooled down only with reduction of the field. The salts are getting warmer with the increasing of the field. So the total effect which will take place in the diagram of the proposed construction comes to nothing.Thus, this project is completely unrealizable." Signed, "L. Landau". There are several handwritten corrections by the author. The paper is browned with age. Landau was the head of the Theoretical Division at the Institute for physical problems from 1937 until 1962. He was a brilliant scientist and many prominent Soviet scientists were his pupils. This critical analysis by Landau is an example of his work. Landau was the head of the Theoretical Division at the Institute for physical problems from 1937 until 1962. He was a brilliant scientist and many prominent Soviet scientists were his pupils. This critical analysis by Landau is an example of his work.