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Joseph C. Hafele
Joseph Carl Hafele (25 July 1933 – 15 November 2014) was an American physicist best known for the Hafele–Keating experiment, a test of Einstein's theory of general relativity. Hafele was an apprentice welder when he was drafted to serve in the army during the Korean War. After the war, he obtained undergraduate and graduate degrees from the University of Illinois at Urbana-Champaign, earning his PhD in 1962 with a thesis on a topic in nuclear physics. He married Carol Hessling in 1958, and they had four daughters. He worked at Los Alamos National Laboratory, and then Washington University in St. Louis from 1966 to 1972. In 1971 he performed the Hafele-Keating experiment along with astronomer Richard E. Keating.''Popular Mechanics'', January 1972, p. 30 He later worked at Caterpillar, Eureka College, NASA (Langley Air Force Base), and Christopher Newport University. After his retirement in 1996 he and his wife lived in Laramie, Wyoming Laramie is a city in and the cou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peoria, Illinois
Peoria ( ) is the county seat of Peoria County, Illinois, United States, and the largest city on the Illinois River. As of the 2020 census, the city had a population of 113,150. It is the principal city of the Peoria Metropolitan Area in Central Illinois, consisting of the counties of Fulton, Marshall, Peoria, Stark, Tazewell, and Woodford, which had a population of 402,391 in 2020. Established in 1691 by the French explorer Henri de Tonti, Peoria is the oldest permanent European settlement in Illinois according to the Illinois State Archaeological Survey. Originally known as Fort Clark, it received its current name when the County of Peoria organized in 1825. The city was named after the Peoria tribe, a member of the Illinois Confederation. On October 16, 1854, Abraham Lincoln made his Peoria speech against the Kansas-Nebraska Act. Prior to prohibition, Peoria was the center of the whiskey industry in the United States. More than 12 distilleries operated in Peoria by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loveland, Colorado
The City of Loveland is the home rule municipality that is the second most populous municipality in Larimer County, Colorado, United States. Loveland is situated north of the Colorado State Capitol in Denver and is the 14th most populous city in Colorado. As of the 2020 census the population of Loveland was 76,378. The city forms part of the Fort Collins-Loveland Metropolitan Statistical Area and the Front Range Urban Corridor. The city's public schools are part of the Thompson R2-J School District. Location Loveland is located in southeastern Larimer County at (40.404789, −105.085868). Located south of Fort Collins, its larger neighbor and the county seat of Larimer County, both cities have expanded steadily towards each other over the last several decades. They are considered a single metropolitan area by the U.S. government. The establishment of county-owned open space between the two communities in the 1990s was intended to create a permanent buffer. The northern ci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Illinois At Urbana-Champaign
The University of Illinois Urbana-Champaign (U of I, Illinois, University of Illinois, or UIUC) is a public land-grant research university in Illinois in the twin cities of Champaign and Urbana. It is the flagship institution of the University of Illinois system and was founded in 1867. Enrolling over 56,000 undergraduate and graduate students, the University of Illinois is one of the largest public universities by enrollment in the country. The University of Illinois Urbana-Champaign is a member of the Association of American Universities and is classified among "R1: Doctoral Universities – Very high research activity". In fiscal year 2019, research expenditures at Illinois totaled $652 million. The campus library system possesses the second-largest university library in the United States by holdings after Harvard University. The university also hosts the National Center for Supercomputing Applications and is home to the fastest supercomputer on a university campu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hafele–Keating Experiment
The Hafele–Keating experiment was a test of the theory of relativity. In 1971, Joseph C. Hafele, a physicist, and Richard E. Keating, an astronomer, took four cesium-beam atomic clocks aboard commercial airliners. They flew twice around the world, first eastward, then westward, and compared the clocks against others that remained at the United States Naval Observatory. When reunited, the three sets of clocks were found to disagree with one another, and their differences were consistent with the predictions of special and general relativity. Overview Kinematic time dilation According to special relativity, the rate of a clock is greatest according to an observer who is at rest with respect to the clock. In a frame of reference in which the clock is not at rest, the clock runs more slowly, as expressed by the Lorentz factor. This effect, called time dilation, has been confirmed in many tests of special relativity, such as the Ives–Stilwell experiment and others. Considering ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington University In St
Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered on Washington, D.C. * George Washington (1732–1799), the first president of the United States Washington may also refer to: Places England * Washington, Tyne and Wear, a town in the City of Sunderland metropolitan borough ** Washington Old Hall, ancestral home of the family of George Washington * Washington, West Sussex, a village and civil parish Greenland * Cape Washington, Greenland * Washington Land Philippines *New Washington, Aklan, a municipality *Washington, a barangay in Catarman, Northern Samar *Washington, a barangay in Escalante, Negros Occidental *Washington, a barangay in San Jacinto, Masbate *Washington, a barangay in Surigao City United States * Washington, Wisconsin (other) * Fort Washington (other) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard E
Richard is a male given name. It originates, via Old French, from Old Frankish and is a compound of the words descending from Proto-Germanic ''*rīk-'' 'ruler, leader, king' and ''*hardu-'' 'strong, brave, hardy', and it therefore means 'strong in rule'. Nicknames include " Richie", "Dick", " Dickon", " Dickie", "Rich", " Rick", " Rico", " Ricky", and more. Richard is a common English, German and French male name. It's also used in many more languages, particularly Germanic, such as Norwegian, Danish, Swedish, Icelandic, and Dutch, as well as other languages including Irish, Scottish, Welsh and Finnish. Richard is cognate with variants of the name in other European languages, such as the Swedish "Rickard", the Catalan "Ricard" and the Italian "Riccardo", among others (see comprehensive variant list below). People named Richard Multiple people with the same name * Richard Andersen (other) * Richard Anderson (other) * Richard Cartwright (disambiguati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eureka College
Eureka College is a private liberal arts college in Eureka, Illinois, that is related by covenant to the Christian Church (Disciples of Christ). Enrollment in 2018 was approximately 567 students. Eureka College was the third college in the United States to admit men and women on an equal basis. It had a close connection with alumnus Ronald Reagan, the 40th President of the United States. In 2010, Eureka College was designated as a national historic district by the National Park Service. History The college was founded in 1848 by a group of abolitionists who had left Kentucky because of their opposition to slavery and was originally named the Walnut Grove Academy. It was chartered in 1855. When the school was founded, it was the first school in Illinois (and only the third in the United States) to educate women on an equal basis with men. Abingdon College merged with Eureka in 1885. Ronald Reagan Eureka College is the smallest college or university in American history to grad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Langley Air Force Base
Langley Air Force Base is a United States Air Force base located in Hampton, Virginia, adjacent to Newport News. It was one of thirty-two Air Service training camps established after the entry of the United States into World War I in April 1917. On 1 October 2010, Langley Air Force Base was joined with Fort Eustis to become Joint Base Langley–Eustis. The base was established in accordance with congressional legislation implementing the recommendations of the 2005 Base Realignment and Closure Commission. The legislation ordered the consolidation of the two facilities which were nearby, but separate military installations, into a single joint base, one of 12 formed in the United States as a result of the law. Overview The Air Force mission at Langley is to sustain the ability for fast global deployment and air superiority for the United States or allied armed forces. The base is one of the oldest facilities of the Air Force, having been established on 30 December 1916, p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christopher Newport University
Christopher Newport University (CNU) is a public university in Newport News, Virginia. It was founded in 1960 and is named after Christopher Newport, captain of one of the ships which carried settlers of Jamestown, the first permanent English settlement in North America. History In 1960, the city of Newport News joined with the Commonwealth of Virginia to create Christopher Newport College (CNC), which opened its doors in 1961 and at the time was located in the old John W. Daniel School building. The college was founded as an extension of the College of William & Mary and offered extension courses that had already been available in the area for some time. In 1964, the college was moved to its current location, a tract of land purchased and donated by the city. That same year, the college's first permanent building was dedicated as Christopher Newport Hall. In 1971, CNC became a four-year college;(Quarstein 179) however, it remained an extension of William & Mary until 1977 w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laramie, Wyoming
Laramie is a city in and the county seat of Albany County, Wyoming, United States. The population was estimated 32,711 in 2019, making it the third-largest city in Wyoming after Cheyenne and Casper. Located on the Laramie River in southeastern Wyoming, the city is north west of Cheyenne, at the junction of Interstate 80 and U.S. Route 287. Laramie was settled in the mid-19th century along the Union Pacific Railroad line, which crosses the Laramie River at Laramie. It is home to the University of Wyoming, WyoTech, and a branch of Laramie County Community College. Laramie Regional Airport serves Laramie. The ruins of Fort Sanders, an army fort predating Laramie, lie just south of the city along Route 287. Located in the Laramie Valley between the Snowy Range and the Laramie Range, the city draws outdoor enthusiasts with its abundance of outdoor activities. In 2011, Laramie was named as one of the best cities in which to retire by '' Money Magazine'', which cited its scen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Physicists
American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, people who self-identify their ancestry as "American" ** American English, the set of varieties of the English language native to the United States ** Native Americans in the United States, indigenous peoples of the United States * American, something of, from, or related to the Americas, also known as "America" ** Indigenous peoples of the Americas * American (word), for analysis and history of the meanings in various contexts Organizations * American Airlines, U.S.-based airline headquartered in Fort Worth, Texas * American Athletic Conference, an American college athletic conference * American Recordings (record label), a record label previously known as Def American * American University, in Washington, D.C. Sports teams Soccer * Ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
