Template:Selected anniversaries/April 12: Difference between revisions
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||1849: Albert Heim born ... geologist, noted for his three-volume Geologie der Schweiz. Pic. | ||1849: Albert Heim born ... geologist, noted for his three-volume Geologie der Schweiz. Pic. | ||
||1851: Edward Walter Maunder born ... astronomer and author. | ||1851: Edward Walter Maunder born ... astronomer and author ... study of sunspots and the solar magnetic cycle that led to his identification of the period from 1645 to 1715 that is now known as the Maunder Minimum. Pic. | ||
File:Carl Louis Ferdinand von Lindemann.jpg|link=Ferdinand von Lindemann (nonfiction)|1852: Mathematician and academic [[Ferdinand von Lindemann (nonfiction)|Ferdinand von Lindemann]] born. He will prove (1882) that π (pi) is a transcendental number. | File:Carl Louis Ferdinand von Lindemann.jpg|link=Ferdinand von Lindemann (nonfiction)|1852: Mathematician and academic [[Ferdinand von Lindemann (nonfiction)|Ferdinand von Lindemann]] born. He will prove (1882) that π (pi) is a transcendental number. | ||
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||1945: U.S. President Franklin D. Roosevelt dies in office; Vice President Harry S. Truman becomes President upon Roosevelt's death. | ||1945: U.S. President Franklin D. Roosevelt dies in office; Vice President Harry S. Truman becomes President upon Roosevelt's death. | ||
||1945: Members of the Hitler Youth distributed cyanide pills to audience members during the last concert of the Berlin Philharmonic. | |||
File:Project Diana antenna.jpg|link=Project Diana (nonfiction)|1947: The United States Army Signal Corps uses [[Project Diana (nonfiction)|Project Diana]] antenna to manufacture high-grade [[clandestiphrine]]. | File:Project Diana antenna.jpg|link=Project Diana (nonfiction)|1947: The United States Army Signal Corps uses [[Project Diana (nonfiction)|Project Diana]] antenna to manufacture high-grade [[clandestiphrine]]. | ||
Revision as of 15:12, 6 March 2019
1817: Astronomer Charles Messier dies. He published an astronomical catalogue consisting of nebulae and star clusters that came to be known as the 110 "Messier objects".
1852: Mathematician and academic Ferdinand von Lindemann born. He will prove (1882) that π (pi) is a transcendental number.
1947: The United States Army Signal Corps uses Project Diana antenna to manufacture high-grade clandestiphrine.
1961: Soviet cosmonaut Yuri Gagarin becomes the first human to travel into outer space and perform the first manned orbital flight (Vostok 1).
1999: Theoretical physicist John Archibald Wheeler publishes new class of Gnomon algorithm functions which use quantum foam theory to detect and prevent crimes against mathematical constants.
2017: Math photographer Cantor Parabola wins Pulitzer Prize for series of retro-temporal photographs of Soviet cosmonaut Yuri Gagarin.