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BEGIVENHEDER DEN 30. APRIL

J. J. Thomson

År: 1897

J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.

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Hawaii

År: 1900

Hawaii becomes a territory of the United States, with Sanford B. Dole as governor.

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Governor of New York

År: 1885

Governor of New York David B. Hill signs legislation creating the Niagara Reservation, New York's first state park, ensuring that Niagara Falls will not be devoted solely to industrial and commercial use.

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Camp Grant massacre

År: 1871

The Camp Grant massacre takes place in Arizona Territory.

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American Civil War

År: 1864

American Civil War: Confederate forces led by General E. Kirby Smith attack federal troops retreating across the Saline at Jenkins' Ferry, Arkansas.

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Albert Einstein

År: 1905

Albert Einstein completes his doctoral thesis at the University of Zurich.

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Federal Prison Camp, Alderson

År: 1927

The Federal Industrial Institute for Women opens in Alderson, West Virginia, as the first women's federal prison in the United States.

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World War II

År: 1943

World War II: The British submarine HMS Seraph surfaces near Huelva to cast adrift a dead man dressed as a courier and carrying false invasion plans.

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1939 New York World's Fair

År: 1939

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

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NBC

År: 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.

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FøDSLER DEN 30. APRIL

Jon Bing

Fødselsår: 1944

Jon Bing, Norwegian author, scholar, and academic (died 2014)

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Jill Clayburgh

Fødselsår: 1944

Jill Clayburgh, American actress (died 2010)

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Frederick Chiluba

Fødselsår: 1943

Frederick Chiluba, Zambian politician, 2nd President of Zambia (died 2011)

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Bobby Vee

Fødselsår: 1943

Bobby Vee, American pop singer-songwriter (died 2016)

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Michael J. Smith

Fødselsår: 1945

Michael J. Smith, American pilot, and astronaut (died 1986)

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Mimi Fariña

Fødselsår: 1945

Mimi Fariña, American singer-songwriter, guitarist, and activist (died 2001)

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Don Schollander

Fødselsår: 1946

Don Schollander, American swimmer

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Michael Brady (biomedical engineer)

Fødselsår: 1945

J. Michael Brady, British radiologist

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Annie Dillard

Fødselsår: 1945

Annie Dillard, American novelist, essayist, and poet

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Sallehuddin of Kedah

Fødselsår: 1942

Sallehuddin of Kedah, Sultan of Kedah

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DøDSFALD DEN 30. APRIL

Emma Smith

Dødsår: 1879

Emma Smith, American religious leader (born 1804)

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Jean-Frédéric Waldeck

Dødsår: 1875

Jean-Frédéric Waldeck, French explorer, lithographer, and cartographer (born 1766)

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Édouard Manet

Dødsår: 1883

Édouard Manet, French painter (born 1832)

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Joseph Leidy

Dødsår: 1891

Joseph Leidy, American paleontologist and author (born 1823)

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Casey Jones

Dødsår: 1900

Casey Jones, American railroad engineer (born 1864)

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Thomas Cooke (bishop)

Dødsår: 1870

Thomas Cooke, Canadian bishop and missionary (born 1792)

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Robert FitzRoy

Dødsår: 1865

Robert FitzRoy, English admiral, meteorologist, and politician, 2nd Governor of New Zealand (born 1805)

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Onogawa Kisaburō

Dødsår: 1806

Onogawa Kisaburō, Japanese sumo wrestler, the 5th Yokozuna (born 1758)

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Peter Andreas Heiberg

Dødsår: 1841

Peter Andreas Heiberg, Danish philologist and author (born 1758)

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Archduke Charles, Duke of Teschen

Dødsår: 1847

Charles, Austrian commander and duke of Teschen (born 1771)

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HELLIGDAGE DEN 30. APRIL

International Jazz Day

International Jazz Day (UNESCO)

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April 30 (Eastern Orthodox liturgics)

Christian feast day: April 30 (Eastern Orthodox liturgics)

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Sarah Josepha Hale

Christian feast day: Sarah Josepha Hale (Episcopal Church)

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Armed Forces Day

Armed Forces Day (Georgia)

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Beltane

May Eve, the eve of the first day of summer in the Northern hemisphere (see May 1): Beltane begins at sunset in the Northern hemisphere, Samhain begins at sunset in the Southern hemisphere. (Neo-Druidic Wheel of the Year)

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