Template:Selected anniversaries/June 30: Difference between revisions
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File:William Oughtred.jpg|link=William Oughtred (nonfiction)|1660: Mathematician [[William Oughtred (nonfiction)|William Oughtred]] dies. He invented the slide rule in 1622. | File:William Oughtred.jpg|link=William Oughtred (nonfiction)|1660: Mathematician [[William Oughtred (nonfiction)|William Oughtred]] dies. He invented the slide rule in 1622. | ||
File:Charles Messier.jpg|link=Charles Messier (nonfiction)|1770: Astronomer [[Charles Messier (nonfiction)|Charles Messier]] is elected to the French Academy of Sciences. | |||
File:Exponential-growth-diagram.svg|link=Crimes against mathematical constants|1907: Spike in [[crimes against mathematical constants]] blamed on upcoming [[Tunguska event (nonfiction)|Tunguska event]]. | File:Exponential-growth-diagram.svg|link=Crimes against mathematical constants|1907: Spike in [[crimes against mathematical constants]] blamed on upcoming [[Tunguska event (nonfiction)|Tunguska event]]. | ||
Revision as of 17:18, 25 August 2017
1660: Mathematician William Oughtred dies. He invented the slide rule in 1622.
1770: Astronomer Charles Messier is elected to the French Academy of Sciences.
1907: Spike in crimes against mathematical constants blamed on upcoming Tunguska event.
1908: The Tunguska event occurs in remote Siberia.
1956: The Tunguska Event Preservation Society launches fundraiser to simulate the 1927 Tunguska expedition.