Template:Selected anniversaries/June 30: Difference between revisions
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File:Tycho Brahe.jpg|link=Tycho Brahe (nonfiction)|1569: Astronomer [[Tycho Brahe (nonfiction)|Tycho Brahe]] uses [[scrying engine]] to forecast the [[Tunguska event (nonfiction)|Tunguska event]] with remarkable accuracy. | |File:Tycho Brahe.jpg|link=Tycho Brahe (nonfiction)|1569: Astronomer [[Tycho Brahe (nonfiction)|Tycho Brahe]] uses [[scrying engine]] to forecast the [[Tunguska event (nonfiction)|Tunguska event]] with remarkable accuracy. | ||
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: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 13:49, 25 June 2017
1660: Mathematician William Oughtred dies. He invented the slide rule in 1622.
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.