. "Soviet physicist" . "1911Z"^^ . "1991-02-09Z"^^ . "Migdal, Arkady"@en . "1991Z"^^ . . "Arkady Beynusovich (Benediktovich) Migdal (Russian: \u0410\u0440\u043A\u0430\u0301\u0434\u0438\u0439 \u0411\u0435\u0301\u0439\u043D\u0443\u0441\u043E\u0432\u0438\u0447 (\u0411\u0435\u043D\u0435\u0434\u0438\u0301\u043A\u0442\u043E\u0432\u0438\u0447) \u041C\u0438\u0433\u0434\u0430\u0301\u043B; Lida, Russian Empire, 11 March 1911 - Princeton, USA, 9 February 1991) was a Soviet physicist and member of the USSR Academy of Sciences. He developed the formula that accounts for the Landau\u2013Pomeranchuk\u2013Migdal effect, a reduction of the bremsstrahlung and pair production cross sections at high energies or high matter densities.His son, Alexander Arkadyevich Migdal, is also a renowned physicist."@en . . "1911-03-11Z"^^ . .