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The almanac

UPI Almanac for Tuesday, Sept. 10, 2011.
By United Press International

The almanac

UPI Almanac for Monday, Sept. 10, 2012.
By United Press International

The almanac

UPI Almanac for Wednesday, Sept. 10, 2008.
By United Press International

Pioneering atomic engineer dies at 95

SEATTLE, April 3 (UPI) -- Arthur "Pete" Peterson, an engineer who oversaw construction of the Chicago reactor where the first self-sustaining nuclear reaction took place, has died at 95.

The almanac

UPI Almanac for Monday, Sept. 10, 2007.
By United Press International

The Almanac

Today is Sunday, Sept. 10, the 253rd day of 2006 with 112 to follow.
By United Press International

The Almanac

Today is Saturday, Sept. 10, the 253rd day of 2005 with 112 to follow.
By United Press International

The Almanac

The weekly UPI Almanac package for Sept. 5-11, 2005.
By United Press International

The Almanac

Today is Friday, Sept. 10, the 254th day of 2004 with 112 to follow.
By United Press International

The Almanac

Today is Wednesday, Sept. 10, the 253rd day of 2003 with 112 to follow.
By United Press International

The Almanac

Today is Tuesday, Sept. 10, the 253rd day of 2002 with 112 to follow.
By United Press International
Wiki

Arthur Holly Compton (September 10, 1892 – March 15, 1962) was an American physicist and Nobel laureate in physics for his discovery of the Compton effect. He served as Chancellor of Washington University in St. Louis from 1945 to 1953.

Arthur Holly Compton was born in Wooster, Ohio in 1892 to Elias and Otelia Compton. They were an academic family; his father Elias Compton was dean of The University of Wooster (later The College of Wooster), which Arthur attended. His eldest brother Karl Taylor Compton also attended The University of Wooster, became a physicist, and was later president of MIT; his second brother Wilson M. Compton became a diplomat and president of the State College of Washington, later Washington State University. Around 1913, Compton devised a demonstration method for the Earth's rotation.

In 1918, Compton began studying X-ray scattering. In 1922, Compton found that X-ray wavelengths increase due to scattering of the radiant energy by "free electrons". The scattered quanta have less energy than the quanta of the original ray. This discovery, known as the "Compton effect," or "Compton scattering" demonstrates the "particle" concept of electromagnetic radiation and earned Compton the Nobel Prize in physics in 1927. Compton developed the method for observing at the same instant individual scattered X-ray photons and the recoil electrons (developed with Alfred W. Simon). In Germany, Walther Bothe and Hans Geiger independently developed a similar method.

This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia article "Arthur Holly Compton."
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