Date | Text | |
---|---|---|
20 May 1506
Christopher Columbus |
death Christopher Columbus Christopher Columbus, Italian explorer (born 1451). |
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20 May 1537
Hieronymus Fabricius |
birth Hieronymus Fabricius Hieronymus Fabricius, Italian anatomist (died 1619) |
|
20 May 1570
Abraham Ortelius |
Abraham Ortelius (cartography) Abraham Ortelius publishes Theatrum Orbis Terrarum, the first modern atlas, in Antwerp. |
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20 May 1722
Sébastien Vaillant |
death Sébastien Vaillant Sébastien Vaillant, French botanist (born 1669) |
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20 May 1755
Johann Georg Gmelin |
death Johann Georg Gmelin Johann Georg Gmelin, botanist, natural historian and geographer (born 1709) |
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20 May 1782
William Emerson |
death William Emerson William Emerson, English mathematician (born 1701) |
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20 May 1793
Charles Bonnet |
death Charles Bonnet Charles Bonnet, Swiss naturalist (born 1720) |
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20 May 1856
David Livingstone |
David Livingstone (exploration) Dr David Livingstone arrives at Quelimane on the Indian Ocean having completed a 2-year transcontinental journey across Africa from Luanda. |
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20 May 1870
Arthur Korn |
birth Arthur Korn Arthur Korn (died 1945), German inventor. |
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20 May 1873
Levi Strauss |
Levi Strauss (technology) Levi Strauss and Jacob Davis receive United States patent#139121 for using copper rivets to strengthen the pockets of denim jeans |
|
20 May 1875
International Bureau of Weights and Measures |
International Bureau of Weights and Measures (metrology) International Bureau of Weights and Measures established by signature of the Metre Convention in Paris |
|
20 May 1891
Kinetograph |
Kinetograph (technology) First public demonstration of the Kinetograph moving picture system developed by W. K. L. Dickson under the direction of Thomas Alva Edison, a showing of the film known as Dickson Greeting. Edison files patents on the camera and peephole viewer on August 24. |
|
20 May 1895
R. J. Mitchell |
birth R. J. Mitchell R. J. Mitchell (died 1937), English aeronautical engineer. |
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20 May 1956
Marlene Zuk |
birth Marlene Zuk Marlene Zuk, American biologist. |
|
20 May 1983
HIV |
HIV (biology) First reports of HIV as a possible cause of AIDS, by independent virology teams led by Luc Montagnier and Robert Gallo. |
|
20 May 2002
Stephen Jay Gould |
death Stephen Jay Gould Stephen Jay Gould (b. 1941), paleontologist/evolutionist. |