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MAY 1

1762 James Durham (Pennsylvania-born Physician) Pennsylvania Scientists and Mathematicians Medicine Notable African Americans
1825 Johann Jakob Balmer (Swiss Physicist) Johann Jakob Balmer Physics Hydrogen Light
1924 Evelyn Boyd Granville (Washington, D.C.-born African-American Mathematician and Educator) Washington, D.C. Scientists & Mathematicians Mathematics Noted Educators African-American Scientists & Mathematicians African American Registry
Deaths
Persons of Historic Significance Who Have Died on This Date
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1851 The First World's Fair Opens in London at the Crystal Palace London, England Historic Firsts Victorian Station History Channel Writer's Almanac Technology and Society
1888 U.S. Patent #382,280 Is Granted to Nikola Tesla for the "Electrical Transmission of Power" Croatian Scientists and Mathematicians Patents Patent #382,280 Electrical Energy USPTO
1889 Hard Rock Phosphate Deposits Are Discovered in Marion County, Florida Marion County, Florida Chemistry Marion County, Florida Florida Institute of Phosphate Research Florida Historical Society
1898 The Panhandle Community of Mobeetie, Texas Is Devastated by a Cyclone Texas Tornados Texas State Historical Association
1921 Radio Signals Are First Used to Guide Ships into New York Harbor New York City Radio Naval History Historic Firsts
1929 7.4 Magnitude Earthquake Kills 3,300 in Iran Iran Earthquakes Death USGS
1958 In New Mexico, the Secretly Established White Sands Proving Grounds Officially Becomes White Sands Missile Range New Mexico Weapons White Sands Missile Range New Mexico Magazine
1964 The First BASIC Programs Are Run on a Computer Computer Technology Historic Firsts Technology and Society
1965 USSR Launches Luna 5 For Lunar Impact Landing Soviet Space Program Space Exploration Moon
1967 6.0 Magnitude Earthquake Kills 9 and Injures 56 in the Arta Province of Greece Greece Earthquakes Death USGS
1986 World Continues to Assess the Damage of the Chernobyl Nuclear Accident Soviet Union Chernobyl Nuclear Accident Radiation Television News Archive
1999 Mercury Space Capsule Liberty Bell 7 Is Found in the Atlantic Ocean, 38 Years After It Sank Space Exploration NASA CNN

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