Template:Selected anniversaries/June 30: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 29: | Line 29: | ||
File:Tunguska-Preservation-TV.jpg|link=Tunguska Event Preservation Society|1956: The [[Tunguska Event Preservation Society]] launches fundraiser to simulate the 1927 Tunguska expedition. | File:Tunguska-Preservation-TV.jpg|link=Tunguska Event Preservation Society|1956: The [[Tunguska Event Preservation Society]] launches fundraiser to simulate the 1927 Tunguska expedition. | ||
||Albert Châtelet (24 October 1883 – 30 June 1960) was a French politician and mathematician. | |||
||1961 – Lee de Forest, American inventor, invented the audion tube (b. 1873) | ||1961 – Lee de Forest, American inventor, invented the audion tube (b. 1873) | ||
Revision as of 19:34, 4 November 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.