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MAY 20

1851 Emil Berliner (German-American Inventor) German Inventors Inventors and Inventions Telephone Phonograph
1860 Eduard Buchner (German-American Chemist; 1907 Nobel Laureate for Chemistry) German Scientists Enzymes 1907 Nobel Laureate for Chemistry
1913 William Hewlett (Michigan-born co-Founder of Hewlett-Packard Co.) William Hewlett Hewlett Packard
Deaths
Persons of Historic Significance Who Have Died on This Date
1913 Henry Flagler (New York-born Industrialist, Railroad Magnate, co-Founder of Standard Oil) Henry Flagler Railroads Standard Oil
2002 Stephen Jay Gould (New York City-born Scientist, Author) Stephen Jay Gould Science American Authors
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760 Halley's Comet Reaches Its Perihelion (Closest Point to the Sun) Comets NASA
1747 James Lind Begins Experiment of Value of Citrus in Treating Scurvy Scottish Scientists Medical Research Foods & Nutrition University of  Virginia
1792 British Lt. Peter Puget Leads the First Survey Tour of Puget Sound by Europeans British Explorers Washington U.S. Maps Historic Firsts History Link
1830 H.D. Hyde of Reading, PA Patents the Fountain Pen Pennsylvania Scientists & Inventors Patents Inventors U.S. Patent and Trademark Office
1856 English Inventor David Edward Hughes Receives a Patent for the Printing Telegraph Ticker English Scientists & Mathemaitcians Patents Inventors Telegraph Center for Technology and Society
1875 17 Nations Sign the Convention of the Metre Standards of Measurement World History Colorado State University
1927 Charles Lindbergh Takes Off from Long Island, New York Bound for Paris Paris New York Charles Lindbergh Aviation History CharlesLindbergh.com History Channel
1929 Laurie Yonge Sets a World Record for Endurance, Flying Over North Florida for 25 Hours and 5 Minutes Florida Female Explorers and Aviators Aviation History Florida Historical Society
1956 United States Drops Hydrogen Bomb over Bikini Atoll The Cold War Atomic Bomb History Channel
1975 England's Queen Elizabeth II Inaugurates the 28" Telescope in the Old Royal Observatory at Greenwich Greenwich, England Queen Elizabeth II Observatories Greenwich Guide
1977 In Washington, the Seattle Aquarium Opens Seattle, Washington Zoos and Aquaria Seattle Aquarium History Link
1990 7.2 Magnitude Earthquake Damages Buildings in Sudan Sudan Earthquakes USGS
1992 6.3 Magnitude Earthquake Kills Over 50 People in Pakistan, Destroying More Than 400 Homes Pakistan Earthquakes Death USGS
2005 NASA Launches NOAA N Polar-Orbiting Weather and Climate Satellite Arctic Antarctic Space Exploration Weather NASA
2010 Scientist Craig Venter Announces Development of the First Synthetic Cell Craig Venter The Cell DNA Scientific Research Historic Firsts National Public Radio

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