1900-12-14 00:00 UTC
Energy comes in packets
December 14, 1900
Max Planck presents the quantum hypothesis to the German Physical Society.
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Curated minutes from history.
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Photo: Unknown authorUnknown author · CC BY-SA 3.0 de · Wikimedia Commons 
Photo: Pach Brothers · Public domain · Wikimedia Commons 1901-12-12 00:00 UTCThree dots across the Atlantic
December 12, 1901
Marconi reports receiving a wireless signal in Newfoundland sent from Cornwall.
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Photo: John T. Daniels · Public domain · Wikimedia Commons 1903-12-17 15:35 UTCThe first powered flight
December 17, 1903
Orville Wright leaves the ground at Kitty Hawk for twelve seconds.
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Photo: Lucien Chavan [1] (1868 - 1942), a friend of Einstein's when · Public domain · Wikimedia Commons 1905-09-26 00:00 UTCSpecial relativity
September 26, 1905
Einstein's paper on the electrodynamics of moving bodies appears in Annalen der Physik.
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Photo: Unknown authorUnknown author · Public domain · Wikimedia Commons 1911-12-14 00:00 UTCThe South Pole
December 14, 1911
Amundsen's party plants a flag at ninety degrees south.
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Photo: Willy Stöwer · Public domain · Wikimedia Commons 1912-04-15 02:20 UTCTitanic goes under
April 15, 1912
The ship disappears beneath the North Atlantic two hours and forty minutes after striking ice.
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Photo: Achille Beltrame · Public domain · Wikimedia Commons 1914-06-28 00:00 UTCSarajevo
June 28, 1914
The assassination of Archduke Franz Ferdinand sets the summer of 1914 in motion.
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Photo: Otis Historical Archives, National Museum of Health and Medi · Public domain · Wikimedia Commons 1918-03-04 00:00 UTCThe first recorded case
March 4, 1918
A cook at Camp Funston reports sick, the earliest documented case of the 1918 influenza pandemic.
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Photo: Unknown authorUnknown author · Public domain · Wikimedia Commons 1918-11-11 11:00 UTCThe guns fall silent
November 11, 1918
The armistice takes effect on the Western Front at the eleventh hour of the eleventh day.
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Photo: Roland Unger · Public domain · Wikimedia Commons 1922-11-26 00:00 UTCWonderful things
November 26, 1922
Howard Carter opens a sealed doorway in the Valley of the Kings.
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Photo: Harris & Ewing · Public domain · Wikimedia Commons 1927-05-21 22:22 UTCLe Bourget
May 21, 1927
Charles Lindbergh lands in Paris after thirty-three hours alone over the Atlantic.
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Photo: Unknown author · CC BY 4.0 · Wikimedia Commons 1928-09-28 00:00 UTCPenicillin is noticed
September 28, 1928
Alexander Fleming returns to a contaminated petri dish and sees a ring of cleared bacteria.
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Photo: US-gov · Public domain · Wikimedia Commons 1929-10-24 00:00 UTCBlack Thursday
October 24, 1929
Panic selling on Wall Street begins the collapse that opens the Great Depression.
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Photo: NASA/Johns Hopkins University Applied Physics Laboratory/Sou · Public domain · Wikimedia Commons 1930-02-18 00:00 UTCA ninth object
February 18, 1930
Clyde Tombaugh finds Pluto on photographic plates at Lowell Observatory.
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Photo: Underwood & Underwood (active 1880 – c. 1950)[1] · Public domain · Wikimedia Commons 1932-05-21 00:00 UTCEarhart lands in Derry
May 21, 1932
Amelia Earhart completes the first solo transatlantic flight by a woman.
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Photo: Acme News Photos · Public domain · Wikimedia Commons 1936-08-09 00:00 UTCJesse Owens wins his fourth gold
August 9, 1936
Berlin watches an American sprinter dismantle the theatre staged around him.
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Photo: Rocky Acosta · CC BY 3.0 · Wikimedia Commons 1936-11-12 00:00 UTCOn Computable Numbers
November 12, 1936
Alan Turing's paper describes the universal machine that every computer since has imitated.
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Photo: George R. Caron / Charles Levy · Public domain · Wikimedia Commons 1945-08-06 23:15 UTCHiroshima
August 6, 1945
The first atomic weapon used in war detonates above a city at 08:15 local time.
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Photo: Published in accordance with the direction of the Internatio · Public domain · Wikimedia Commons 1945-11-20 00:00 UTCNuremberg
November 20, 1945
The International Military Tribunal opens, and international criminal law begins.
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Photo: The original uploader was TexasDex at English Wikipedia. · CC BY-SA 3.0 · Wikimedia Commons 1946-02-14 00:00 UTCENIAC is shown
February 14, 1946
The first general-purpose electronic computer is unveiled in Philadelphia.
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Photo: Ulfbastel · CC BY-SA 3.0 · Wikimedia Commons 1947-12-23 00:00 UTCThe transistor works
December 23, 1947
Bell Labs demonstrates the device that every later computer is built from.
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Photo: FDR Presidential Library & Museum · CC BY 2.0 · Wikimedia Commons 1948-12-10 00:00 UTCThe Universal Declaration
December 10, 1948
The UN General Assembly adopts the Universal Declaration of Human Rights in Paris.
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Photo: Orihara1 · Public domain · Wikimedia Commons 1949-10-01 00:00 UTCThe People's Republic is proclaimed
October 1, 1949
Mao Zedong declares the founding of the People's Republic of China in Beijing.
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