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Alvin C. Graves
Alvin Cushman Graves (November 4, 1909 – July 28, 1965) was an American nuclear physicist who served at the Manhattan Project's Metallurgical Laboratory and the Los Alamos Laboratory during World War II. After the war, he became the head of J (Test) Division at Los Alamos, and was director or assistant director of numerous nuclear weapons tests during the 1940s and 1950s. Graves was badly injured in the 1946 laboratory criticality accident in Los Alamos that killed Louis Slotin, but recovered. Early life Alvin Cushman Graves was born on November 4, 1909, in Washington, D.C., the youngest of six children. He was the son of Herbert C. Graves, an engineer with the Coast and Geodetic Survey and member of the American Commission to Negotiate Peace after World War I. Graves attended Eastern High School, and graduated at the top of his class from the University of Virginia in 1931 with a bachelor's degree in electrical engineering. He attended the Massachusetts Institute of Tec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington, D
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 (disambiguati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Slotin
Louis Alexander Slotin (1 December 1910 – 30 May 1946) was a Canadian physicist and chemist who took part in the Manhattan Project. Born and raised in the North End of Winnipeg, Manitoba, Slotin earned both his Bachelor of Science and Master of Science degrees from the University of Manitoba, before obtaining his doctorate in physical chemistry at King's College London in 1936. Afterwards, he joined the University of Chicago as a research associate to help design a cyclotron. In 1942, Slotin was invited to participate in the Manhattan Project, and subsequently performed experiments with uranium and plutonium cores to determine their critical mass values. After World War II he continued his research at Los Alamos National Laboratory in New Mexico. On 21 May 1946, he accidentally began a fission reaction which released a burst of hard radiation. He was rushed to the hospital and died nine days later on 30 May. Slotin had become the victim of the second criticality acci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argonne National Laboratory
Argonne National Laboratory is a science and engineering research national laboratory operated by UChicago Argonne LLC for the United States Department of Energy. The facility is located in Lemont, Illinois, outside of Chicago, and is the largest national laboratory by size and scope in the Midwest. Argonne had its beginnings in the Metallurgical Laboratory of the University of Chicago, formed in part to carry out Enrico Fermi's work on nuclear reactors for the Manhattan Project during World War II. After the war, it was designated as the first national laboratory in the United States on July 1, 1946. In the post-war era the lab focused primarily on non-weapon related nuclear physics, designing and building the first power-producing nuclear reactors, helping design the reactors used by the United States' nuclear navy, and a wide variety of similar projects. In 1994, the lab's nuclear mission ended, and today it maintains a broad portfolio in basic science research, e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago Pile-1
Chicago Pile-1 (CP-1) was the world's first artificial nuclear reactor. On 2 December 1942, the first human-made self-sustaining nuclear chain reaction was initiated in CP-1, during an experiment led by Enrico Fermi. The secret development of the reactor was the first major technical achievement for the Manhattan Project, the Allied effort to create atomic bombs during World War II. Developed by the Metallurgical Laboratory at the University of Chicago, CP-1 was built under the west viewing stands of the original Stagg Field. Although the project's civilian and military leaders had misgivings about the possibility of a disastrous runaway reaction, they trusted Fermi's safety calculations and decided they could carry out the experiment in a densely populated area. Fermi described the reactor as "a crude pile of black bricks and wooden timbers". The reactor was assembled in November 1942, by a team that included Fermi, Leo Szilard (who had previously formulated an idea for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar
Radar is a detection system that uses radio waves to determine the distance ('' ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the objects. Radio waves (pulsed or continuous) from the transmitter reflect off the objects and return to the receiver, giving information about the objects' locations and speeds. Radar was developed secretly for military use by several countries in the period before and during World War II. A key development was the cavity magnetron in the United Kingdom, which allowed the creation of relatively small systems with sub-meter resolution. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MIT Radiation Laboratory
The Radiation Laboratory, commonly called the Rad Lab, was a microwave and radar research laboratory located at the Massachusetts Institute of Technology (MIT) in Cambridge, Massachusetts. It was first created in October 1940 and operated until 31 December 1945 when its functions were dispersed to industry, other departments within MIT, and in 1951, the newly formed MIT Lincoln Laboratory. The use of microwaves for various radio and radar uses was highly desired before the war, but existing microwave devices like the klystron were far too low powered to be useful. Alfred Lee Loomis, a millionaire and physicist who headed his own private laboratory, organized the Microwave Committee to consider these devices and look for improvements. In early 1940, Winston Churchill organized what became the Tizard Mission to introduce U.S. researchers to several new technologies the UK had been developing. Among these was the cavity magnetron, a leap forward in the creation of microwaves that made ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthur H
Arthur Higelin (born 27 March 1966), better known under his stage name Arthur H (), is a French pianist, songwriter and singer. He is best known in France for his live performances—four of his albums were recorded live. Life and career He is the son of the French singer Jacques Higelin and Nicole Courtois, and half brother of singers Izïa Higelin and stage and film actor, theatre director and music video director Kên Higelin. After traveling in the West Indies, he studied music in Boston before returning to Paris and developing his eclectic but highly personal musical style, drawing on such influences as Thelonious Monk, Serge Gainsbourg, the Sex Pistols, jazz, blues, Middle Eastern music and the tango. He first performed in 1988 in clubs in Paris, as leader of a trio with bassist Brad Scott and drummer Paul Jothy. His first album, ''Arthur H'' (1990), combined rhythmic experimentation and '' bal-musette'' elements with a vocal style which has been compared to Tom Waits ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nepotism
Nepotism is an advantage, privilege, or position that is granted to relatives and friends in an occupation or field. These fields may include but are not limited to, business, politics, academia, entertainment, sports, fitness, religion, and other activities. The term originated with the assignment of nephews to important positions by Catholic popes and bishops. Nepotism has been criticized since the ancient times by several philosophers, including Aristotle, Valluvar, and Confucius, condemning it as both evil and unwise. Origins The term comes from Italian word ''nepotismo'',"Nepotism." Dictionary.com. Retrieved 20 June 2013. which is based on Latin root ''nepos'' meaning nephew. Since the a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Saturday Evening Post
''The Saturday Evening Post'' is an American magazine, currently published six times a year. It was issued weekly under this title from 1897 until 1963, then every two weeks until 1969. From the 1920s to the 1960s, it was one of the most widely circulated and influential magazines within the American middle class, with fiction, non-fiction, cartoons and features that reached two million homes every week. The magazine declined in readership through the 1960s, and in 1969 ''The Saturday Evening Post'' folded for two years before being revived as a quarterly publication with an emphasis on medical articles in 1971. As of the late 2000s, ''The Saturday Evening Post'' is published six times a year by the Saturday Evening Post Society, which purchased the magazine in 1982. The magazine was redesigned in 2013. History Rise ''The Saturday Evening Post'' was first published in 1821 in the same printing shop at 53 Market Street in Philadelphia where the Benjamin Franklin-founded '' Penn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Depression
The Great Depression (19291939) was an economic shock that impacted most countries across the world. It was a period of economic depression that became evident after a major fall in stock prices in the United States. The Financial contagion, economic contagion began around September and led to the Wall Street Crash of 1929, Wall Street stock market crash of October 24 (Black Thursday). It was the longest, deepest, and most widespread depression of the 20th century. Between 1929 and 1932, worldwide Gross domestic product, gross domestic product (GDP) fell by an estimated 15%. By comparison, worldwide GDP fell by less than 1% from 2008 to 2009 during the Great Recession. Some economies started to recover by the mid-1930s. However, in many countries, the negative effects of the Great Depression lasted until the beginning of World War II. Devastating effects were seen in both rich and poor countries with falling personal income, prices, tax revenues, and profits. International t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Massachusetts Institute Of Technology
The Massachusetts Institute of Technology (MIT) is a private land-grant research university in Cambridge, Massachusetts. Established in 1861, MIT has played a key role in the development of modern technology and science, and is one of the most prestigious and highly ranked academic institutions in the world. Founded in response to the increasing industrialization of the United States, MIT adopted a European polytechnic university model and stressed laboratory instruction in applied science and engineering. MIT is one of three private land grant universities in the United States, the others being Cornell University and Tuskegee University. The institute has an urban campus that extends more than a mile (1.6 km) alongside the Charles River, and encompasses a number of major off-campus facilities such as the MIT Lincoln Laboratory, the Bates Center, and the Haystack Observatory, as well as affiliated laboratories such as the Broad and Whitehead Institutes. , 98 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern High School (Washington, D
Eastern High School may refer to: __NOTOC__ United States * Eastern High School (Pekin, Indiana), Pekin, Indiana *Eastern High School (Louisville, Kentucky), Middletown, Kentucky * Eastern High School (Maryland), Baltimore, Maryland * Eastern High School (Michigan), Lansing, Michigan *Eastern High School (Beaver, Ohio), Beaver, Ohio *Eastern High School (Reedsville, Ohio), Reedsville, Ohio * Eastern High School (Winchester, Ohio), Winchester, Ohio *Eastern High School (Washington, D.C.), Washington, D.C. Other places * Eastern High School, Cardiff, Wales, United Kingdom See also * Bristol Eastern High School, Bristol, Connecticut, U.S. *Eastern Christian High School, North Haledon, New Jersey, U.S. *Eastern Hills Senior High School, a high school in Perth, Western Australia, Australia *Eastern Junior-Senior High School, Greentown, Indiana, U.S. * Eastern Mennonite School, Harrisonburg, Virginia, U.S. *Eastern Regional High School Eastern Regional High School is a four-year comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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