Template:Selected anniversaries/June 30: Difference between revisions
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File:Tunguska.png|link=Tunguska event (nonfiction)|1908: The [[Tunguska event (nonfiction)|Tunguska event]] occurs in remote Siberia. | File:Tunguska.png|link=Tunguska event (nonfiction)|1908: The [[Tunguska event (nonfiction)|Tunguska event]] occurs in remote Siberia. | ||
||1912: Ludwig Bölkow, German aero engineer (b. 1912) Messer-262 | |||
||1919 – Ed Yost, American inventor of the modern hot air balloon (d. 2007) | ||1919 – Ed Yost, American inventor of the modern hot air balloon (d. 2007) | ||
Revision as of 16:20, 19 July 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.