Template:Selected anniversaries/August 15: Difference between revisions

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File:Wow signal.jpg|link=Wow! signal (nonfiction)|1977: The Big Ear, a radio telescope operated by Ohio State University as part of the SETI project, receives a radio signal from deep space; the event is named the "[[Wow! signal (nonfiction)|Wow! signal]]" from the notation made by a volunteer on the project.
File:Wow signal.jpg|link=Wow! signal (nonfiction)|1977: The Big Ear, a radio telescope operated by Ohio State University as part of the SETI project, receives a radio signal from deep space; the event is named the "[[Wow! signal (nonfiction)|Wow! signal]]" from the notation made by a volunteer on the project.
||1978: Viggo Brun dies ... professor, mathematician and number theorist. In 1915, he introduced a new method, based on Legendre's version of the sieve of Eratosthenes, now known as the Brun sieve, which addresses additive problems such as Goldbach's conjecture and the twin prime conjecture. He used it to prove that there exist infinitely many integers n such that n and n+2 have at most nine prime factors, and that all large even integers are the sum of two numbers with at most nine prime factors. Pic.


||1984: Lake Monoun limnic eruption: West Province, Cameroon: the lake exploded in a limnic eruption, which resulted in the release of a large amount of carbon dioxide that killed 37 people. At first, the cause of the deaths was a mystery, and causes such as terrorism were suspected. Further investigation and a similar event two years later at Lake Nyos led to the currently accepted explanation.
||1984: Lake Monoun limnic eruption: West Province, Cameroon: the lake exploded in a limnic eruption, which resulted in the release of a large amount of carbon dioxide that killed 37 people. At first, the cause of the deaths was a mystery, and causes such as terrorism were suspected. Further investigation and a similar event two years later at Lake Nyos led to the currently accepted explanation.

Revision as of 06:25, 6 September 2018