* 1939 – 1945, the Second Battle of the Atlantic.

Subsequent formalizations were framed as attempts to define " effective calculability " or " effective method "; those formalizations included the Gödel – Herbrand – Kleene recursive functions of 1930, 1934 and 1935, Alonzo Church's lambda calculus of 1936, Emil Post's " Formulation 1 " of 1936, and Alan Turing's Turing machines of 1936 – 7 and 1939.

* 1890 – Anthony Fokker, Dutch aviation engineer ( d. 1939 )

* 1939 – André Ouellet, French-Canadian politician

* 1852 – Ferdinand von Lindemann, German mathematician ( d. 1939 )

* 1939 – Alan Ayckbourn, English writer

* 1939 – Johnny Raper, Australian rugby league footballer

* 1939 – The 1939-40 New York World's Fair opens.

* 1939 – NBC inaugurates its regularly scheduled television service in New York City, broadcasting President Franklin D. Roosevelt's N. Y. World's Fair opening day ceremonial address.

* 1939 – First flight of the turbojet-powered Heinkel He 178, the world's first jet aircraft.

* 1939 – William Least Heat-Moon, American author

* 1939 – Edward Patten, American singer-songwriter and producer ( Gladys Knight & the Pips ) ( d. 2005 )

* 1939 – Bulle Ogier, French actress

* 1939 – Romano Prodi, Italian politician and statesman

* 1939 – Hércules Brito Ruas, Brazilian footballer

* 1939 – Albert Einstein and Leó Szilárd write a letter to Franklin D. Roosevelt, urging him to begin the Manhattan Project to develop a nuclear weapon.

* 1939 – Benjamin Barber, American theorist

* 1939 – Wes Craven, American director

* 1939 – John W. Snow, American politician, 73rd United States Secretary of the Treasury

* 1984 – Marvin Gaye, American singer ( The Moonglows ) ( b. 1939 )

* 2001 – Trinh Cong Son, Vietnamese composer ( b. 1939 )

Eastern European theorists include Pyotr Stolypin ( 1862 – 1911 ) and Alexander Chayanov ( 1888 – 1939 ) in Russia ; Adolph Wagner ( 1835 – 1917 ), and Karl Oldenberg in Germany, and Bolesław Limanowski ( 1835 – 1935 ) in Poland.

In 1950 it was combined with " War of Nerves " ( 1950 ), " Discord in Scarlet " ( 1939 ) and " M33 in Andromeda " ( 1943 ) to form the novel The Voyage of the Space Beagle ( 1950 ).

Early landmarks of the secondary literature include the monographs by Buchler ( 1939 ), Feibleman ( 1946 ), and Goudge ( 1950 ), the 1941 Ph. D. thesis by Arthur W. Burks ( who went on to edit volumes 7 and 8 ), and the studies edited by Wiener and Young ( 1952 ).

Conquest's calculations excluded camp deaths before 1936 and after 1950, executions from 1939 – 1953, the vast deportation of the people of captive nations into the camps and their deaths 1939 – 1953, the massive deportation within the Soviet Union of minorities 1941 – 1944 and their deaths, and those the Soviet Red Army and secret police executed throughout Eastern Europe after their conquest during 1944 – 1945.

Illiteracy, which was 90 – 95 % in rural areas in 1939 went down to 30 % by 1950 and by 1985 it was equal to that of a Western country.

He was replaced as the director of Gone with the Wind ( 1939 ), but he went on to direct The Philadelphia Story ( 1940 ), Adam's Rib ( 1949 ), Born Yesterday ( 1950 ), A Star Is Born ( 1954 ) and My Fair Lady ( 1964 ).

** Chicago ( now Reisinger ) ( 8 ) 1937, 1938, 1939, 1942, 1943, 1950, 1957, 1963

** Spingold ( 2 ) 1939, 1950

In 1917, Albert Einstein established the theoretical foundations for the laser and the maser in the paper Zur Quantentheorie der Strahlung ( On the Quantum Theory of Radiation ); via a re-derivation of Max Planck ’ s law of radiation, conceptually based upon probability coefficients ( Einstein coefficients ) for the absorption, spontaneous emission, and stimulated emission of electromagnetic radiation ; in 1928, Rudolf W. Ladenburg confirmed the existences of the phenomena of stimulated emission and negative absorption ; in 1939, Valentin A. Fabrikant predicted the use of stimulated emission to amplify “ short ” waves ; in 1947, Willis E. Lamb and R. C. Retherford found apparent stimulated emission in hydrogen spectra and effected the first demonstration of stimulated emission ; in 1950, Alfred Kastler ( Nobel Prize for Physics 1966 ) proposed the method of optical pumping, experimentally confirmed, two years later, by Brossel, Kastler, and Winter.

In 1939, Valentin A. Fabrikant predicted the use of stimulated emission to amplify " short " waves ; In 1947, Willis E. Lamb and R. C. Retherford found apparent stimulated emission in hydrogen spectra and effected the first demonstration of stimulated emission ; in 1950, Alfred Kastler ( Nobel Prize for Physics 1966 ) proposed the method of optical pumping, experimentally confirmed, two years later, by Brossel, Kastler, and Winter.

Milligan's seven volumes of memoirs cover the years from 1939 to 1950 ( his call-up, war service, first breakdown, time spent entertaining in Italy, and return to the UK ).

* 1939 – 1950 Charles Raven

* Children ( 8 ): Gwendolyn Gail ( 1935 – 1976 ), Sue ( 1937 – 1978 ), Bill ( 1939 – 1962 ), Cathy Ann ( 1943 – 1947 ), Arlo Davy ( 1947 –), Joady Ben ( 1948 –), Nora ( 1950 –), Lorinna Lynn ( 1954 – 1973 )

The last and current postcard era, which began about 1939, is the " chrome " era, however these types of cards did not begin to dominate until about 1950.

The studies by Werner Betz ( 1949, 1939 ), Einar Haugen ( 1950, also 1956 ), and Uriel Weinreich ( 1953 ) are regarded as the classical theoretical works on loan influence.

His 146 runs scored were the most since Ted Williams had 150 in 1950, and he became the first player since Jimmie Foxx in 1939 to amass more runs scored than games played.

* Ladies and Gentlemen ( 1939 ), ( with Ben Hecht ), made into Perfect Strangers, film of 1950

The village changed its name from Lochmoor to Grosse Pointe Woods in 1939, but didn't incorporate as a city until 1950.

Village water came to the town in 1939, sewer in about 1950, and blacktop in 1961.

* ( 1838 – 1872 ; 1876 – 1879 ; 1886 – 1895 ; 1914 – 1915 ; 1930 – 1931 ; 1933 – 1939 ; 1948 – 1950 ; 1962 – 1963 ; 1968 – 1980 )

Acoustical modifications in 1939 were thought to have greatly improved the sound of Studio 8H ; some recording sessions were held there as late as June 1950.

( Nevertheless, there were a few recording sessions in Studio 8-H as late as June 1950, probably because of improvements to the acoustics in 1939, including installation of an acoustical shell.