* 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.

Mountbatten's qualification for offering advice to this particular heir to the throne was unique ; it was he who had arranged the visit of King George VI and Queen Elizabeth to Dartmouth Royal Naval College on 22 July 1939, taking care to include the young Princesses Elizabeth and Margaret in the invitation, but assigning his nephew, Cadet Prince Philip of Greece, to keep them amused while their parents toured the facility.

The ceremony was first conducted with the Prince of Wales ( the future Edward VIII ) in 1927, then with King George VI in 1939, and last with his daughter, Queen Elizabeth II in 1959 and 1970.

* 1939 – The Canadian National War Memorial is unveiled by King George VI and Queen Elizabeth in Ottawa.

King George VI, Elizabeth Bowes-Lyon | Queen Elizabeth, and Prime Minister Mackenzie King in Banff, Alberta, 1939

In June 1939, Elizabeth and her husband toured Canada from coast to coast and back, and visited the United States, spending time with President Roosevelt at the White House and his Hudson Valley estate.

* Tower of London ( 1939 ): Elizabeth was played by Barbara O ' Neil.

* The 1939 film The Private Lives of Elizabeth and Essex dramatised the Queen's relationship with Devereux, starring Bette Davis and Errol Flynn ; it is based on Maxwell Anderson's 1930 play Elizabeth the Queen and Lytton Strachey's romantic account Elizabeth and Essex.

* Chamberlin, Frederick ( 1939 ): Elizabeth and Leycester Dodd, Mead & Co.

George VI of the United Kingdom | King George VI, with Elizabeth Bowes-Lyon | Queen Elizabeth, grants Royal Assent to bills in the Senate of Canada | Canadian Senate, 1939

A prominent feature of the latter are numerous royal walkabouts, the tradition of which was initiated in 1939 by Queen Elizabeth when she was in Ottawa and broke from the royal party to speak directly to gathered veterans.

* Film footage of King George VI and Queen Elizabeth in Canada, 1939

From July 1939, he began corresponding with the 13-year-old Princess Elizabeth ( his third cousin through Queen Victoria and the eldest daughter and heiress presumptive of King George VI ) whom he had first met in 1934.

She appeared in three other box office hits in 1939, The Old Maid with Miriam Hopkins, Juarez with Paul Muni and The Private Lives of Elizabeth and Essex with Errol Flynn.

* The Private Lives of Elizabeth and Essex ( 1939 )

William Halse Rivers Rivers was the oldest of four children, with his siblings being brother Charles Hay ( 29 August 1865 – 8 November 1939 ) and sisters Ethel Marian ( 30 October 1867 – 4 February 1943 ) and Katharine Elizabeth ( 1871 – 1939 ).

Flynn co-starred with Olivia de Havilland in eight films: Captain Blood ( 1935 ), The Charge of the Light Brigade ( 1936 ), The Adventures of Robin Hood ( 1938 ), Four's a Crowd ( 1938 ), Dodge City ( 1939 ), The Private Lives of Elizabeth and Essex ( 1939 ), Santa Fe Trail ( 1940 ), and They Died with Their Boots On ( 1941 ).

During the shooting of The Private Lives of Elizabeth and Essex ( 1939 ), Flynn and co-star Bette Davis quarrelled off-screen, causing Davis to allegedly strike him harder than necessary while filming a scene.

Among his best-known roles was Ashley Wilkes in Gone with the Wind ( 1939 ) and roles in Berkeley Square ( 1933 ), Of Human Bondage ( 1934 ), The Scarlet Pimpernel ( 1934 ), The Petrified Forest ( 1936 ), Pygmalion ( 1938 ), Intermezzo ( 1939 ), " Pimpernel " Smith ( 1941 ) and The First of the Few ( 1942 ).

Howard is perhaps best remembered for his role as Ashley Wilkes in Gone With the Wind ( 1939 ), but he was uncomfortable with Hollywood and returned to England to help with the Second World War effort.

In the 1939 film Gone with the Wind, set in the mid-1860s, the character Maj. Ashley Wilkes returns home for a 3-day furlough and thanks his wife Melanie Hamilton for a tunic she gives him as a Christmas gift, saying " I meant it, dear.

The November 1953 Planet Stories, by Kelly Freas, showing the " sexual dimorphism " mentioned by Harry Harrison, and also showing the new cover logo that was adopted from the Spring 1947 issuePlanet Stories clearly targeted a young readership, and the simultaneous launch in 1939 of Planet Comics may have been instrumental in attracting young readers to science fiction, but Ashley suggests that it is more likely that Planet Stories attracted experienced readers of the genre who " still yearned for the early days of sf ".

After the success of Four Daughters, Lynn was screen tested for the role of Ashley Wilkes in Gone with the Wind ( 1939 ).

* Wilfrid William Ashley, 1st Baron Mount Temple ( 1867 – 1939 )

* Wilfrid Ashley, 1st Baron Mount Temple ( 1867 – 1939 )